The correct answer is Henry Moseley.    

• The Modern periodic law & table was invented by Henry Moseley in 1913. 
• The first who was able to arrange all the known elements was Mendeleev, he gave the law called the Mendeleev's periodic law.
• Dobereiner grouped the elements into triads.
• Newlands gave the law of octaves.  
• Modern Periodic Table: 
  • The defects of the periodic table of  Mendeleev were sorting out by Henry Moseley who invented the modern periodic law in 1913. 
  • The law of modern table states that - '' according to the increasing order of their atomic numbers if the elements are arranged, then the element's physical & chemical properties are repeated after regular intervals.
• Salient Features of the Modern Periodic Table: 
  • The element's properties are the functions that are periodical according to their atomic numbers. 
  • On the basis of the Modern table, Scientist Bohr invented a long form of the periodic table that was created by Warner& Rang. 
  • The periodic table consists of 18 groups & 7 periods.
• Division structure of elements with respective periods: 
  • According to the increasing order of their atomic numbers if the elements are arranged, then the element's physical & chemical properties are repeated after 2, 8, 18, and 32 intervals. 
  • There are 2 elements in the first period, 8 elements in second and third periods each respectively, 18 elements fourth and fifth periods each respectively, 32 elements in the sixth period, and 19 elements in the seventh period till now.

• Division structure of elements with respective periods( in Table format):

The correct answer is option 2.

Key Points

Concept:

Energy

• The capacity of doing work is called energy. 
• SI unit of energy is the joule. 
• Various forms of energy are heat energy, light energy, nuclear energy, electrical energy, mechanical energy, etc. 
• Energy can be converted from one form to another. 
• This happens through various processes or using certain appliances. 
• For example, when a bulb glows by electricity, electrical energy is converted into light energy. 

Explanation:

Windmill

• A windmill has large blades just as a fan. 
• It wind rotates the blades attached to the turbine. 
• The turbine rotates and electrical energy is produced. 
• Energy to the motion is kinetic energy. 
• So, the windmill converts the kinetic energy of blades into electrical energy. 

Electric cell

• Chemical reactions take place in the cell. 
• This makes a potential difference between the two terminals. 
• When connected with the conductor, current flows. 
• In this way, chemical energy is converted into electrical energy. 

Electric bulb

• An electric bulb converts the electrical energy into light and heat energy. 
• A filament present in the bulb burns and light energy is produced out of it. 

Microphone

• A microphone receives the sound signal and converts it into electrical signals. 
• In the microphone, there is a diaphragm. 
• It vibrates and the diaphragm makes the coil attached to it vibrate. 
• A permanent magnet near the coil induces a current in the coil by the process of electromagnetic induction. 
• So, sound energy is converted into electrical energy.

Conclusion:

The correct sequence is hence a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)

Statements:

Fruit prices are sharing in the world market.

Conclusions:

I. Fruits are becoming a rare commodity in the world market →  This conclusion does not necessarily follow from the given statement. The statement only mentions that fruit prices are soaring in the world market, which could be due to various factors such as supply shortages, changes in demand, or global trade policies. The increase in price does not necessarily mean that fruits are becoming rare in the world market. Therefore, this conclusion does not follow.

II: People cannot eat Fruits.  → This conclusion is clearly not supported by the given statement. There is no information provided that suggests people cannot eat fruits. In fact, the statement only mentions an increase in fruit prices, which may make it more expensive for people to buy fruits, but it does not suggest that people cannot eat fruits altogether. Therefore, this conclusion also does not follow.

Hence, Neither I nor II follows is correct answer.

The correct answer is Mahapurusha Sankaradeva.

Key Points

• Sattriya dance
  • Satriya Nritya is the classical dance form of Assam which represents the Satriya culture, the basis of the religious and cultural fabric of Assam.
    • It is a dance-drama performance art with origins in the Krishna-centered Vaishnavism monasteries of Assam and attributed to the 15th-century Bhakti movement scholar and saint Mahapurush Srimanta Sankardev.
    • Dance historian Dr. Sunil Kothari has recently been bestowed with the Madhabdev Award by the Government of Assam for popularising Sattriya dance.
    • Sattriya was given the status of classical dance in the year 2000 by the Sangeet Natak Akademi.

Additional Information

In the below diagram shortest distance between starting point x and point z denoted by point X and Z respectively.

Now, Triangle "XYZ" is a right-angled triangle, so using Pythagoras Theorem:

XZ² = XY² + YZ²

XZ² = (20)² + (25)²

XZ² = 400 + 625

XZ² = 1025

XZ²= √ 1025

XZ = 32.015

XZ is approximately equal to 32. 

The person's final position P is in the east with respect to point X. 

Thus the shortest distance is 32 m and the final direction is in the east with respect to the starting point.

Hence, the correct answer is "32 m, East".

The correct answer is Article 226.

Key Points

• Under Article 226, a writ petition can be filed in a High court for issuing one of the five writs as per the case. 
• A High Court is empowered to issue directions, orders, or writs for the enforcement of a Fundamental Right and for any other purpose those include:
  • Habeas corpus
  • Mandamus
  • Prohibition
  • Quo warranto
  • Certiorari.
• The Supreme Court is considered the protector and guarantor of fundamental rights(Article 32).

Additional Information

• Article 32  of the Indian Constitution has been described as the ‘heart and soul’ of the Indian Constitution by Dr B. R. Ambedkar.
  • It gives a citizen the right to approach the Supreme Court to get resorted to any of the fundamental rights in case of their violation.
  • It is also known as the Right to Constitutional Remedies.
• Article 346- States the Official language for the communication between one state and the other or the state and the union.
• Article 21 is one of the prime articles comprising Part III of the Constitution of India dealing with fundamental rights.
  • Article 21 is the protection of life and personal liberty.

The figure that will replace the question mark (?) in the following figure is:

Hence, the correct answer is "Option (2)".

According to the given information,

• Fourteenth from right end -

(Left) G 6 & $ 4 Y 8 9 # @ W H 5 % 6 & K 9 @ R 9 4 T & % # U Y 8 $ # Q Y 8 4 $ (Right)

• Ninth to the right of the fourteenth of the right ( T ) 

T & % # U Y 8 $ # Q Y 8 4 $ (Right). 

So Q  is ninth to the right of the fourteenth from the right end of the given arrangement.

Hence, “2” is the correct answer.​

1. Students can score more marks than before in Mathematics.

Assumption 1 is not implicit in the statement.

Reduction of syllabus does not imply students will score more marks now. 

2. This has been done to reduce the stress and burden of the students in Mathematics.

Reduction in syllabus will reduce the burden and stress on students.

Assumption 2 is not implicit in the statement.

Hence, only assumption 2 is implicit.

Given:

The volume of one brick = 0.0014 m³

Length of wall = 14 m ; Breadth of wall = 0.125 m

and height of wall = 5 m

Formula used:

Volume of wall = L × B × H

Number of bricks = Volume of wall/volume of a brick

Where, L = length ; B = breadth ; H = height

Calculation:

Volume of wall = 14 × 0.125 × 5 = 8.75 m3

Number of bricks = 8.75/0.0014

⇒ 6250

∴ The correct answer is 6250.