KEAM 2019 - Physics and Chemistry Solved Paper

An electron, placed in an electric field, experiences a force F of 1 N. What are the magnitude and direction of the electric field E at the point where the electron is located (e = 1.6 x 10−19C)?

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An electron, placed in an electric field, experiences a force F of 1 N. What are the magnitude and direction of the electric field E at the point where the electron is located (e = 1.6 x 10−19C)?

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Q.2 Correct

Q.2 In-correct

Q.2 Unattempt

The distance between two charges q1=+2µC and q2=+8µC is 15cm. Calculate the distance from the charge q1 to the points on the line segment joining the two charges where the electric field is zero.

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The distance between two charges q1=+2µC and q2=+8µC is 15cm. Calculate the distance from the charge q1 to the points on the line segment joining the two charges where the electric field is zero.

Four point charges (with equal magnitude of charge of 5 C; but with different signs) are placed at four corners of a square of side 10 m. Assuming that the square is centered at the origin and the configuration of the charges are as given in the figure, the potential and the magnitude of electric field at the origin, respectively are
[k=

1

4ρε0

]

Four point charges (with equal magnitude of charge of 5 C; but with different signs) are placed at four corners of a square of side 10 m. Assuming that the square is centered at the origin and the configuration of the charges are as given in the figure, the potential and the magnitude of electric field at the origin, respectively are
[k=

]

A point dipole with dipole moment,

, is kept at the origin. An external electric field given by,

) , is applied on it. Which one of the following statements is true?

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A point dipole with dipole moment,

, is kept at the origin. An external electric field given by,

) , is applied on it. Which one of the following statements is true?

Find the total capacitance and total charge on the capacitors

Q.6 Correct

Q.6 In-correct

Q.6 Unattempt

A circuit is made using R1,R2, R3,R4 and a battery as shown in the following figure. Find the equivalent resistance of the given circuit and the current passing through R3

Q.7 Correct

Q.7 In-correct

Q.7 Unattempt

Find the voltage and current passing through the resistor R2 shown in the following circuit

Q.8 Correct

Q.8 In-correct

Q.8 Unattempt

The resistor R1 = 3 Ω and R2 = 1 Ω are connected in parallel to a 20 V battery. Find the heat developed in the resistor R] in one minute

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The resistor R1 = 3 Ω and R2 = 1 Ω are connected in parallel to a 20 V battery. Find the heat developed in the resistor R] in one minute

The velocity and acceleration of a particle performing simple harmonic motion have a steady phase relationship. The acceleration shows a phase lead over the velocity in radians of

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The velocity and acceleration of a particle performing simple harmonic motion have a steady phase relationship. The acceleration shows a phase lead over the velocity in radians of

Consider a driven damped mechanical oscillator is in resonance. Which of the following statements is true?

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Consider a driven damped mechanical oscillator is in resonance. Which of the following statements is true?

A body undergoing simple harmonic motion has a maximum acceleration of 8π m/s2 and maximum speed of 1.6 m/s. What is the time period T?

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A body undergoing simple harmonic motion has a maximum acceleration of 8π m/s2 and maximum speed of 1.6 m/s. What is the time period T?

A bat emits an ultrasonic sound wave at 33.0 kHz and receives an echo 0.1 s later. What is the distance of the bat from the object-producing echo? ( Speed of sound in air is 330 m/s)

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A bat emits an ultrasonic sound wave at 33.0 kHz and receives an echo 0.1 s later. What is the distance of the bat from the object-producing echo? ( Speed of sound in air is 330 m/s)

A wave along a string has the following equation y = 0.05 sin (28t - 2.Ox) m (where t is in seconds and x is in meters). What are the amplitude, frequency and wavelength of the wave?

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A wave along a string has the following equation y = 0.05 sin (28t - 2.Ox) m (where t is in seconds and x is in meters). What are the amplitude, frequency and wavelength of the wave?

A train sounds its whistle as it approaches an observer standing at a point near the track. The observer measures a frequency of 216 Hz as the train approaches and a frequency of 184 Hz as the train leaves. What is the frequency of its whistle?

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A train sounds its whistle as it approaches an observer standing at a point near the track. The observer measures a frequency of 216 Hz as the train approaches and a frequency of 184 Hz as the train leaves. What is the frequency of its whistle?

The following figure is the combination of logic gates. The inputs are A and B. The output is C. Which one of the following choices gives the correct matching?

Q.16 Correct

Q.16 In-correct

Q.16 Unattempt

A particle of mass m and charge q with an initial velocity

→

v

is subjected to a uniform magnetic field

→

B

along the vertical direction. The particle will

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A particle of mass m and charge q with an initial velocity

→

v

is subjected to a uniform magnetic field

→

B

along the vertical direction. The particle will

Consider a circular loop of radius R on the xy-plane carrying a steady current anticlockwise. The magnetic field at the center of the loop is given by

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Consider a circular loop of radius R on the xy-plane carrying a steady current anticlockwise. The magnetic field at the center of the loop is given by

Consider two parallel current carrying conductors separated by a distance. Which one of the following statements is true?

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Consider two parallel current carrying conductors separated by a distance. Which one of the following statements is true?

The energy gap is much more in silicon than in germanium because

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The energy gap is much more in silicon than in germanium because

The dimensions for pressure is

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The dimensions for pressure is

The magnitude of deceleration required for a body, moving at a speed of 10 m/s to come to a complete halt at a distance of 100 m is

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The magnitude of deceleration required for a body, moving at a speed of 10 m/s to come to a complete halt at a distance of 100 m is

An accurate measurement implies that

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An accurate measurement implies that

The following plot gives the variation of acceleration (m/s2 ) with time (s) for an object that started from rest at time t = 0 s. The velocity at time t = 15 s (V15) and at 25 s (V25) , respectively are

Q.24 Correct

Q.24 In-correct

Q.24 Unattempt

An object, moving with velocity 5 m/s, undergoes an acceleration of 1 m/s2 at time t = 0. If the object has a mass of 1 kg, the kinetic energy (KE) of the object at time t = 5 s is

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An object, moving with velocity 5 m/s, undergoes an acceleration of 1 m/s2 at time t = 0. If the object has a mass of 1 kg, the kinetic energy (KE) of the object at time t = 5 s is

The variation of speed (in m/s) of an object with time (in seconds) is given by the expression V(t) = V0 – 5t + 5t2

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The variation of speed (in m/s) of an object with time (in seconds) is given by the expression V(t) = V0 – 5t + 5t2

A boat is moving from the east bank to the west bank on a south 'flowing river. If the speed of the boat is 4 km/h and that of the river is 3 km/h. If the width of the river is 2 km, the distance travelled by the boat is

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A boat is moving from the east bank to the west bank on a south 'flowing river. If the speed of the boat is 4 km/h and that of the river is 3 km/h. If the width of the river is 2 km, the distance travelled by the boat is

A bead is tied on one end of a stiff rope of length 1 m. With the other end of the rope as the center, the rope is rotated in such a way that the bead completes 10 revolutions per second. The centripetal acceleration of the bead is

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A bead is tied on one end of a stiff rope of length 1 m. With the other end of the rope as the center, the rope is rotated in such a way that the bead completes 10 revolutions per second. The centripetal acceleration of the bead is

The electric field of an electromagnetic wave in free space is given by

‌V∕m. Which of the following statements is correct?

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The electric field of an electromagnetic wave in free space is given by

‌V∕m. Which of the following statements is correct?

The radiation produced by a 100 W bulb has the following property

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The radiation produced by a 100 W bulb has the following property

A parallel plate capacitor (of capacitance C) with circular plates of radius r0 located at positions ±α, is connected in series with a resistor R and is charged by a battery of voltage V. Consider a circular loop L of radius ‌

r0

2

parallel to the capacitor plates is located at the center. Which of the following statements is correct?

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A parallel plate capacitor (of capacitance C) with circular plates of radius r0 located at positions ±α, is connected in series with a resistor R and is charged by a battery of voltage V. Consider a circular loop L of radius ‌

r0

2

parallel to the capacitor plates is located at the center. Which of the following statements is correct?

A monochromatic light of frequency v =

1

6.63

⋅1016 Hz is produced by a laser. The power emitted is P = 10‌–2 W. The average number of photos per second emitted by the source is

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A monochromatic light of frequency v =

1

6.63

⋅1016 Hz is produced by a laser. The power emitted is P = 10‌–2 W. The average number of photos per second emitted by the source is

The work function of three photosensitive materials used to build photoelectric devices are given as: Sodium (2.75 eV), copper (4.65 eV) and gold (5.1 eV). Which of the following statements is correct. (The frequency of visible light lies in the range4 ´ 1014 Hz to 8 ´ 1014 Hz)?

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The work function of three photosensitive materials used to build photoelectric devices are given as: Sodium (2.75 eV), copper (4.65 eV) and gold (5.1 eV). Which of the following statements is correct. (The frequency of visible light lies in the range4 ´ 1014 Hz to 8 ´ 1014 Hz)?

An object is placed at 9cm in front of a concave mirror of radius of curvature 12cm. The following statement is true

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An object is placed at 9cm in front of a concave mirror of radius of curvature 12cm. The following statement is true

An optician prescribes a lens of power +2.5 D. The focal length of the lens in water is (Refractive indices of the lens and water are respectively 1.5 and 1.3)

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An optician prescribes a lens of power +2.5 D. The focal length of the lens in water is (Refractive indices of the lens and water are respectively 1.5 and 1.3)

In a single slit diffraction (of width a) by a monochromatic source of wavelength l the first minimum of the intensity distribution occurs at an angle

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In a single slit diffraction (of width a) by a monochromatic source of wavelength l the first minimum of the intensity distribution occurs at an angle

A monochromatic source of wavelength 60 nm was used in Young’s double slit experiment to produce interference pattern. I1 is the intensity of light at a point on the screen where the path difference is 150 nm. The intensity of light at a point where thepath difference is 200 nm is given by

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A monochromatic source of wavelength 60 nm was used in Young’s double slit experiment to produce interference pattern. I1 is the intensity of light at a point on the screen where the path difference is 150 nm. The intensity of light at a point where thepath difference is 200 nm is given by

The Brewster’s single for air to water interface is

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The Brewster’s single for air to water interface is

A TV transmitting antenna is 81 m tall. It has a half-power beam width of 10 degrees. If the receiving antenna is at the ground level, the service area covered by the transmitter is determined by

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A TV transmitting antenna is 81 m tall. It has a half-power beam width of 10 degrees. If the receiving antenna is at the ground level, the service area covered by the transmitter is determined by

In the amplitude modulation mode of transmission, the normal speed signal is with a maximum frequency of 5 kHz. If the carrier frequency is 200 kHz, the modulated signal will have the frequencies varying between

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In the amplitude modulation mode of transmission, the normal speed signal is with a maximum frequency of 5 kHz. If the carrier frequency is 200 kHz, the modulated signal will have the frequencies varying between

For signal transmission, modulation is necessary

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For signal transmission, modulation is necessary

A light emitting diode is

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A light emitting diode is

In the context of p-n junction, select the correct statement from the following

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In the context of p-n junction, select the correct statement from the following

The radius of gyration about an axis through the center of a hollow sphere with external radius a and internal radius b is

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The radius of gyration about an axis through the center of a hollow sphere with external radius a and internal radius b is

A ball of mass 1 kg and radius 0.5 m, starting from test rolls down on a 30° inclined plane. The torque acting on the ball at the distance of the 7m from the starting point is close to (Take acceleration due to gravity as 10 m/s2 )

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A ball of mass 1 kg and radius 0.5 m, starting from test rolls down on a 30° inclined plane. The torque acting on the ball at the distance of the 7m from the starting point is close to (Take acceleration due to gravity as 10 m/s2 )

If the radius of the earth suddenly decreases by half of its present value. Then the time duration of one day will be

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If the radius of the earth suddenly decreases by half of its present value. Then the time duration of one day will be

A hollow sphere and a solid sphere, of equal mass and equal radii roll down without slipping on an inclined plane. If the torque experienced by the hollow sphere and solid sphere are tH and tS respectively, then

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A hollow sphere and a solid sphere, of equal mass and equal radii roll down without slipping on an inclined plane. If the torque experienced by the hollow sphere and solid sphere are tH and tS respectively, then

A brick of mass 2kg slides down an incline of height 5m and angle 30°. If the coefficient of friction of the incline is

1

2√3

, the velocity of the block at the bottom of the incline is (Assume the acceleration due to gravity is 10 m/s2 )

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A brick of mass 2kg slides down an incline of height 5m and angle 30°. If the coefficient of friction of the incline is

1

2√3

, the velocity of the block at the bottom of the incline is (Assume the acceleration due to gravity is 10 m/s2 )

A spherically uniform planet of mass 8 ⋅ 1024 kg and of radius 6 ⋅ 106 m is orbiting around the Sun. The escape velocity for the planet is close to (Take G = 6 ⋅ 10−11 N−m2∕kg2 )

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A spherically uniform planet of mass 8 ⋅ 1024 kg and of radius 6 ⋅ 106 m is orbiting around the Sun. The escape velocity for the planet is close to (Take G = 6 ⋅ 10−11 N−m2∕kg2 )

Suppose to planets A and B revolved around a Sun in the galaxy. The semi major axis of A and B are 1 and 5 AU (astronomical unit) respectively. If the period of revolution of A is 1 year, the period of revolution of B is

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Suppose to planets A and B revolved around a Sun in the galaxy. The semi major axis of A and B are 1 and 5 AU (astronomical unit) respectively. If the period of revolution of A is 1 year, the period of revolution of B is

The half-life of 43Tc99 is 6 hours. If 12 mg of 43Tc99 is injected to a patient, after 24 hours how much Tc will be left in the patients body?

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The half-life of 43Tc99 is 6 hours. If 12 mg of 43Tc99 is injected to a patient, after 24 hours how much Tc will be left in the patients body?

For atoms, which of the following statement is correct?

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For atoms, which of the following statement is correct?

Which of the following statements is not a property of nuclear force?

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Which of the following statements is not a property of nuclear force?

Which of the following elements you need to remove to form an isotone family?

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Which of the following elements you need to remove to form an isotone family?

A magnetic field of 1 T applied at an angle p/3 to the vertical direction is decreased to zero at a steady rate in one second. The magnitude of induced emf in a horizontally placed circular loop of radius 5 cm is given by

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A magnetic field of 1 T applied at an angle p/3 to the vertical direction is decreased to zero at a steady rate in one second. The magnitude of induced emf in a horizontally placed circular loop of radius 5 cm is given by

The dimension of mutual inductance is (Denote dimension of current as A)

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The dimension of mutual inductance is (Denote dimension of current as A)

A pure inductor of inductance 0.1 H is connected to an AC source (of rms voltage) 220 V angular frequency of 300 Hz. The rms current is

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A pure inductor of inductance 0.1 H is connected to an AC source (of rms voltage) 220 V angular frequency of 300 Hz. The rms current is

In an LCR series circuit (of inductance L, capacitance C and resistance R), the impedance is minimum when the angular frequency of the source is given by

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In an LCR series circuit (of inductance L, capacitance C and resistance R), the impedance is minimum when the angular frequency of the source is given by

A Carnot engine is operating between a hot body and cold body maintained at temperature T1 and T2 respectively. Consider the following three cases
Case-I : The temperature of the hot body is changed to T1 + αT and cold body is at T2
Case II: The temperature of the hot body is at T1 and cold body is changed to T2 + αT
Case –III: The temperature of the hot body is at T1 and cold body is changed to T2 – αT

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A Carnot engine is operating between a hot body and cold body maintained at temperature T1 and T2 respectively. Consider the following three cases
Case-I : The temperature of the hot body is changed to T1 + αT and cold body is at T2
Case II: The temperature of the hot body is at T1 and cold body is changed to T2 + αT
Case –III: The temperature of the hot body is at T1 and cold body is changed to T2 – αT

Some smoke is trapped in a small glass container and is viewed through a microscope. A number of very small smoke particles are seen in continuous random motion as a result of their bombardment by air molecules. If the mass of the smoke particle is about1012 times higher than that of an air molecule the average speed of a smoke particle is

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Some smoke is trapped in a small glass container and is viewed through a microscope. A number of very small smoke particles are seen in continuous random motion as a result of their bombardment by air molecules. If the mass of the smoke particle is about1012 times higher than that of an air molecule the average speed of a smoke particle is

The standard of length is maintained by a 1 meter long bar made up of a material having coefficient of linear expansion a = 0.00001 °C–1 . If the length of the bar were to be preserved to an accuracy of 1 part per million, what would be maximum allowed temperature variation?

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The standard of length is maintained by a 1 meter long bar made up of a material having coefficient of linear expansion a = 0.00001 °C–1 . If the length of the bar were to be preserved to an accuracy of 1 part per million, what would be maximum allowed temperature variation?

Inside the engine of an automobile, the cylinder compresses the air from approximately standard temperature and pressure to one-twentieth of the original volume and a pressure of 50 atm. What is the temperature of the compressed air?

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Inside the engine of an automobile, the cylinder compresses the air from approximately standard temperature and pressure to one-twentieth of the original volume and a pressure of 50 atm. What is the temperature of the compressed air?

A spring of natural length l and spring constant 50 N/m is kept on a horizontal frictionless table with one end attached to a rigid support. First the spring was compressed by 10 cm and then released to hit a ball of mass 20 g kept at a distance l from the rigid support. if after hitting the ball, the natural length of the spring is restored, what is the speed with which the ball moved? (Ignore the air resistance)

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A spring of natural length l and spring constant 50 N/m is kept on a horizontal frictionless table with one end attached to a rigid support. First the spring was compressed by 10 cm and then released to hit a ball of mass 20 g kept at a distance l from the rigid support. if after hitting the ball, the natural length of the spring is restored, what is the speed with which the ball moved? (Ignore the air resistance)

In a water container, an aluminium piece of volume 0.5 m3 is lowered through an external force, until it is completely submerged. In another identical water container, a lead piece of same volume was similarly submerged using the same amount of externalforce. The mass density of lead is 4 times larger than the mass density of the aluminum. If FA and FL are the buoyancy forces acting on aluminum and lead respectively, then which of the following statements is correct?

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In a water container, an aluminium piece of volume 0.5 m3 is lowered through an external force, until it is completely submerged. In another identical water container, a lead piece of same volume was similarly submerged using the same amount of externalforce. The mass density of lead is 4 times larger than the mass density of the aluminum. If FA and FL are the buoyancy forces acting on aluminum and lead respectively, then which of the following statements is correct?

A boy formed a bubble and a liquid drop from the same soapy water. The pressure difference between inside and outside of the soap bubble is measured to be 100 N/m2 . If the radius of the droplet is half of the radius of the bubble, then the pressure difference between the inside and outside of the droplet is

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A boy formed a bubble and a liquid drop from the same soapy water. The pressure difference between inside and outside of the soap bubble is measured to be 100 N/m2 . If the radius of the droplet is half of the radius of the bubble, then the pressure difference between the inside and outside of the droplet is

A mass m, suspended vertically by a massless ideal spring with spring constant k, is at rest. The mass is displaced upward by a height h. When released, the kinetic energy of the mass will be proportional to
(Neglecting air resistance)

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A mass m, suspended vertically by a massless ideal spring with spring constant k, is at rest. The mass is displaced upward by a height h. When released, the kinetic energy of the mass will be proportional to
(Neglecting air resistance)

Instantaneous power delivered to a damped harmonic oscillator (natural frequency is w0) by an external periodic force (driving frequency w) under steady state conditions is

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Instantaneous power delivered to a damped harmonic oscillator (natural frequency is w0) by an external periodic force (driving frequency w) under steady state conditions is

The Q factor for a damped oscillator is given by the

©

The Q factor for a damped oscillator is given by the

A ball of mass m is projected upward with a speed v0. The speed at a height h is (Neglecting air resistance)

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A ball of mass m is projected upward with a speed v0. The speed at a height h is (Neglecting air resistance)

An object having a velocity 5 m/s is accelerated at the rate 2 m/s2 for 6 s. Find the distance travelled during the period of acceleration

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An object having a velocity 5 m/s is accelerated at the rate 2 m/s2 for 6 s. Find the distance travelled during the period of acceleration

A vehicle moving at 36 km/hr is to be stopped by applying brakes in the next 5 m. If the vehicle weighs 2000 kg, determine the average force that must be applied on it

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A vehicle moving at 36 km/hr is to be stopped by applying brakes in the next 5 m. If the vehicle weighs 2000 kg, determine the average force that must be applied on it

A block of mass 20 kg is suspended through two spring balances with negligible mass as shown in figure. What will be the readings in the upper and lower balance respectively?

Q.72 Correct

Q.72 In-correct

Q.72 Unattempt

Two masses connected in series with two massless strings are hanging from a support as shown in the figure. Find the tension in the upper string

Q.73 Correct

Q.73 In-correct

Q.73 Unattempt

Propylene on treatment with HBr/H2O2 provides

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Propylene on treatment with HBr/H2O2 provides

__________ is a potent vasodilator

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__________ is a potent vasodilator

The strongest base among the following is

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The strongest base among the following is

The neopentyl halide in ethanol yields alkenes by E1 mechanism due to

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The neopentyl halide in ethanol yields alkenes by E1 mechanism due to

Arylbromides are not good candidates for

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Arylbromides are not good candidates for

Sulfonation of benzene with excess sulfuric acid provides

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Sulfonation of benzene with excess sulfuric acid provides

The following reaction is named as

Q.81 Correct

Q.81 In-correct

Q.81 Unattempt

Which of the following is obtained when 4-methylbenzene sulphonic acid is hydrolysed with excess of sodium acetate?

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Which of the following is obtained when 4-methylbenzene sulphonic acid is hydrolysed with excess of sodium acetate?

The compound which does not lead to benzoic acid by oxidation with KMnO4 is

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The compound which does not lead to benzoic acid by oxidation with KMnO4 is

In the Hogman rearrangement of primary amides having optically active group with Sconfiguration, the product amine has

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In the Hogman rearrangement of primary amides having optically active group with Sconfiguration, the product amine has

Benzonitrile can be prepared from benzaldehyde on treatment with

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Benzonitrile can be prepared from benzaldehyde on treatment with

The product formed in the below reaction is

The product formed in the below reaction is

Which hydride amongst the following has the least boiling point?

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Which hydride amongst the following has the least boiling point?

Which of the following sets has Lewis acid behaviour for all the components?

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Which of the following sets has Lewis acid behaviour for all the components?

The carbon atoms in calcium carbide are held by

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The carbon atoms in calcium carbide are held by

According to the VSEPR theory, the shape of ClO3– would be

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According to the VSEPR theory, the shape of ClO3– would be

Acetic acid in liquid ammonia behaves as

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Acetic acid in liquid ammonia behaves as

The compound(s) that does(do) not exist is (are)

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The compound(s) that does(do) not exist is (are)

Rare gases are sparingly soluble in water because of

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Rare gases are sparingly soluble in water because of

An example of a non-stoichiometric oxide when heated is

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An example of a non-stoichiometric oxide when heated is

The donor atom in EDTA are

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The donor atom in EDTA are

Hard acids prefer to combine with

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Hard acids prefer to combine with

Among the following, which species represents a pseudohalide?

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Among the following, which species represents a pseudohalide?

PCl3 is stored in a well stoppered bottle since

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PCl3 is stored in a well stoppered bottle since

On passing silent electric discharge through oxygen in an ozonizer, 5.5 mol % of oxygen is converted to ozone. How many moles of O2 and O3 result when 35 moles of O2 is originally present?

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On passing silent electric discharge through oxygen in an ozonizer, 5.5 mol % of oxygen is converted to ozone. How many moles of O2 and O3 result when 35 moles of O2 is originally present?

Carnallite is a mineral containing

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Carnallite is a mineral containing

Maximum number of photons emitted by a bulb capable of producing monochromatic light of wavelength 550 nm is ..........., if 100 V and 1 A is supplied for one hour.

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Maximum number of photons emitted by a bulb capable of producing monochromatic light of wavelength 550 nm is ..........., if 100 V and 1 A is supplied for one hour.

Which of the following is the correct unit of angular momentum of an lectron in an orbital of an atom?

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Which of the following is the correct unit of angular momentum of an lectron in an orbital of an atom?

Consider a fcc lattice made of a metal cation (M6+) and three oxide anions per unit cell. The resultant structure would have

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Consider a fcc lattice made of a metal cation (M6+) and three oxide anions per unit cell. The resultant structure would have

The edge length of a solid possessing cubic unit cell is 2√2r (structure I), based on hard sphere model, which upon subjecting to a phase transition, a new cubic structure (structure II) having an edge length of 4√3r is obtained, where r is the radiusof the hard sphere. Which of the following statements is true?

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The edge length of a solid possessing cubic unit cell is 2√2r (structure I), based on hard sphere model, which upon subjecting to a phase transition, a new cubic structure (structure II) having an edge length of 4√3r is obtained, where r is the radiusof the hard sphere. Which of the following statements is true?

An ideal gas “A” having volume of 1 L at 27oC is kept in a container having movable piston and adiabatic walls in ambient condition. If 1.33 L atm of energy is supplied inside the system, find out the final temperature of the system?

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An ideal gas “A” having volume of 1 L at 27oC is kept in a container having movable piston and adiabatic walls in ambient condition. If 1.33 L atm of energy is supplied inside the system, find out the final temperature of the system?

A 5.2 L closed container contains some water and N2(g) at 29°C. The total pressure of the system and water tension are 1 atm and 0.04 atm, respectively. Upon electrolysing the liquid water inside completely, the final pressure of system was at 2 atm. What is number of moles of water that was present inside the container?

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A 5.2 L closed container contains some water and N2(g) at 29°C. The total pressure of the system and water tension are 1 atm and 0.04 atm, respectively. Upon electrolysing the liquid water inside completely, the final pressure of system was at 2 atm. What is number of moles of water that was present inside the container?

A solution of methanol in water is 20% by volume. If the solution and pure methanol have densities of 0.964 kg L–1 and 0.793 kg L–1 , respectively, find the percent of methanol by weight?

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A solution of methanol in water is 20% by volume. If the solution and pure methanol have densities of 0.964 kg L–1 and 0.793 kg L–1 , respectively, find the percent of methanol by weight?

The Henry’s law constant for O2 dissolved in water is 4.34 . 104 atm at certain temperature. If the partial pressure of O2 in a gas mixture that is in equilibrium with water is 0.434 atm, what is the mole fraction of O2 in the solution?

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The Henry’s law constant for O2 dissolved in water is 4.34 . 104 atm at certain temperature. If the partial pressure of O2 in a gas mixture that is in equilibrium with water is 0.434 atm, what is the mole fraction of O2 in the solution?

The standard heat of formation of CH4, CO2 and H2O (I) are –76.2, –394.8 and –285.82 kJ mol–1 , respectively. Heat of vaporization of water is 44 kJ mol–1 . Calculate the amount of heat eveolved when 22.4 L of CH4, kept under normal conditions, is oxidized into its gaseous products

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The standard heat of formation of CH4, CO2 and H2O (I) are –76.2, –394.8 and –285.82 kJ mol–1 , respectively. Heat of vaporization of water is 44 kJ mol–1 . Calculate the amount of heat eveolved when 22.4 L of CH4, kept under normal conditions, is oxidized into its gaseous products

Acetic acid dimerizes when dissolved in benzene. As a result boiling point of the solution rises by 0.36°C, when 100 g of benzene is mixed with “X” g of acetic acid. In this solution, if experimentally measured molecular weight of acetic acid is 117.8 and molar elevation constant of benzene is 2.57 K kg mol–1 , what is the weight % and degree of dissociation (in %) of acetic acid in benzene?

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Acetic acid dimerizes when dissolved in benzene. As a result boiling point of the solution rises by 0.36°C, when 100 g of benzene is mixed with “X” g of acetic acid. In this solution, if experimentally measured molecular weight of acetic acid is 117.8 and molar elevation constant of benzene is 2.57 K kg mol–1 , what is the weight % and degree of dissociation (in %) of acetic acid in benzene?

At a certain temperature, 2 moles of CO and 4 moles of Cl2 gases were reacted to form COCl2 in a 10 L vessel. At equilibrium if one mole of CO is present then equilibrium constant for the reaction is

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At a certain temperature, 2 moles of CO and 4 moles of Cl2 gases were reacted to form COCl2 in a 10 L vessel. At equilibrium if one mole of CO is present then equilibrium constant for the reaction is

The equilibrium constant for the reaction, N2(g) + 3H2 ƒ 2NH3(g) a 2N2(g) + 6H2 ƒ 4NH3(g) are K1 and K2, respectively. The relations between K1 and K2 is

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The equilibrium constant for the reaction, N2(g) + 3H2 ƒ 2NH3(g) a 2N2(g) + 6H2 ƒ 4NH3(g) are K1 and K2, respectively. The relations between K1 and K2 is

For a first order reaction, A(g) ® B(g) at 35°C, the volume of “A” left in reaction vessel at various times are given below. [Given data : log (5/4) = 0.096]

What is the value of rate constant?

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For a first order reaction, A(g) ® B(g) at 35°C, the volume of “A” left in reaction vessel at various times are given below. [Given data : log (5/4) = 0.096]

What is the value of rate constant?

Ecell of the following cell is
Pt(s) | H2(g), 1 bar | H+ (1 M) || H+ (0.1 M) | H2(g), 1 bar | Pt(s)

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Ecell of the following cell is
Pt(s) | H2(g), 1 bar | H+ (1 M) || H+ (0.1 M) | H2(g), 1 bar | Pt(s)

In a lead-acid battery, if 1 A current is passed to charge the battery for 1 h, v is the amount of PbSO4 converted to PbO2? (Given data : 1 F = 96500 C mol–1)

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In a lead-acid battery, if 1 A current is passed to charge the battery for 1 h, v is the amount of PbSO4 converted to PbO2? (Given data : 1 F = 96500 C mol–1)

A fuel cell operates at constant current, with H2 fuel (1 bar) and O2 oxidant (1 bar). The electrolyte used is 0.001 M HCl and the product(s) of the reaction are confined inside the fuel cell. Which of the following is true about the electrolyte?

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A fuel cell operates at constant current, with H2 fuel (1 bar) and O2 oxidant (1 bar). The electrolyte used is 0.001 M HCl and the product(s) of the reaction are confined inside the fuel cell. Which of the following is true about the electrolyte?

The correct IUPAC name for methylisopropylene is

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The correct IUPAC name for methylisopropylene is

Cyclohexylamine and aniline can be distinguished

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Cyclohexylamine and aniline can be distinguished

The compounds pyridine and planar cyclooctatetraene are .................. respectively

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The compounds pyridine and planar cyclooctatetraene are .................. respectively

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