The element having electronic configuration [Kr]4 d¹⁰4f¹⁴5 s²5p⁶5 d¹6 s² belongs to:

The correct order of strengths of the carboxylic acids:

The following two reactions are known:

Which of the following set of molecules will have zero dipole moment?

An element has a body centered cubic (BCC) structure with a cell edge of 288 pm. The atomic radius is:

The reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as:

Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is : (Atomic wt. of Cl = 35.5u)

Choose the correct reason(s) for the stability of the lyophobic colloidal particles.

Match list-I (atomic number of elements) with list-II (position of elements in periodic table) and select the correct answer using the codes given below the lists:

Which one of the following is incorrect for ideal solution?

Consider the reaction of extraction of gold from its ore

Which is the correct thermal stability order for H₂E(E = O,S,Se, Te and Po)?

The IUPAC name of [Ni(NH₃)4] [NiCl₄] is :

Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code:

Kp for the reaction N₂ + 2H₂ ⇌ 2NH₃ is 1.6 × 10^-4 atm^-2 at 400°C.

What will be KP at 500^∘C? The heat of reaction at this temperature is -25.14kcal?

Which of the following statements is false?

The emf of the above cell is 0.2905V. Equilibrium constant for the cell reaction is:

7g of nitrogen occupies a volume of 5 litres under certain conditions. Under the same conditions one mole of a gas, having molecular weight 56, occupies a volume of?

Which of the following is an incorrect statement?

Geometrical shapes of the complexes formed by the reaction of Ni²⁺ with Cl⁻,CN⁻ and H₂O, respectively, are:

A follows the first-order reaction.

(A) ⟶ product.

The concentration of A changes from 0.1M to 0.025M in 40 minutes. Find the rate of reaction of A when concentration of A is 0.01M ?

The I.U.P.A.C. name for K₃ [Co(NO₂)₆] is:

The coagulating power of electrolytes having ions Na⁺,Al³⁺ and Ba²⁺ for arsenic sulphide sol increases in the order:

Match the catalysts to the correct processes:

The structure of the product S is:

Which of the following is cationic detergent?

Compute the heat of formation of liquid methyl alcohol (in kJmol⁻¹ ) using the following data. The heat of vaporisation of liquid methyl alcohol is 38 kJ mol⁻¹. The heat of formation of gaseous atoms from the elements in their standard states:

The freezing point depression constant (K_f) of benzene is 5.12 K kg mol⁻¹. The freezing point depression for the solution of molality 0.078 m containing a nonelectrolyte solute in benzene is (rounded off upto two decimal places):

Consider the reaction, CH₃CH₂CH₂Br + NaCN → CH₃CH₂CH₂CN + NaBr.

This reaction will be the fastest in:

ln a first order reaction the concentration of reactant decreases from 800 mol/dm³ to 50 mol/dm³ is 2 × 10⁴sec. The rate constant of reaction in sec⁻¹ is:

The octahedral complex of a metal ion M³⁺ with four monodentate ligands L₁, L₂, L₃ and L₄ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is:

An example of a sigma bonded organometallic compound is:

In a galvanic cell, the salt bridge:

Which of the following statements about Na₂O₂ is not correct?

Which of the following conversions involves change in both shape and hybridisation?

What is the work function of the metal if the light of wavelength 4000 Å generates photoelectrons of velocity 6 × 10⁵ ms⁻¹?

The molecular mass of O₂ and SO₂ are 32 and 64 respectively. If one litre of O₂ at 15^∘C and 750 mm pressure contains N molecules, the number of molecules in two litre of SO₂ under the same conditions of temperature and pressure will be:

The fuel gas, whose presence in the exhaust fumes shows incomplete combustion of fuel, is:

For which of the following molecule significant μ ≠ 0?

In the reaction  the equivalent weight of iodine will be equal to:

Amino acids are classified as acidic, basic, or neutral depending upon the relative number of amino and carboxyl acid groups in their molecule. Which among the following are acidic?

A welding fuel gas contains carbon and hydrogen only. Burning a small sample of it in oxygen gives 3.38 g carbon dioxide, 0.690 g of water and no other products. A volume of 10 L (measured at STP) of this welding gas is found to weigh 11.6 g. Calculate (i) empirical formula (ii) molar mass of the gas and (iii) molecular formula.

An enzyme/protein is formed by chemically bonding together:

Bakelite is obtained from phenol by reacting with:

The by-product of Solvay process is:

In the diagram of the Tetrarch stele of a dicot root, the different parts have been indicated by alphabets, choose the answer in which these alphabets correctly match with the parts they indicate.

Ruminate endosperm is commonly found in seeds of:

The presence of auxins in a solution could be tested by:

Indole acetic acid is a ___________.

In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called:

The first scientist associated with the discovery of auxins in plants is:

The sequence of development of embryo sac is:

Which of the following part of dicot root is made up of cells with suberin deposition in tangential as well as radial walls?

Give name of organelle, which is surrounded by a single layered wall.

In plant cell vacuole is __________.

Which of the following is a non-endospermic monocot seed.

Development of an embryo sac from a nucellar cell is:

Formation, growth and development of a new individual beginning from egg is known as:

In a forest, deer, raccoons, squirrels, and other animals eat and find shelter. A detritus food web occurs as their wastes accumulate on the forest floor. In this detritus web:

Which of the following statements regarding universal rules of nomenclature is wrong?

Who suggested that new cell arise through cell division of preexisting cells?

A kidney bean was soaked until it was soft. The seed coat was removed and the seed was split open as shown in the diagram. Both halves, P and Q, were placed on damp cotton wool and left aside for a few days. The halves were then observed. Which of the following is the possible observation?

During transcription, holoenzyme RNA polymerase binds to DNA sequence and DNA assumes a saddle-like structure at that point. The sequence is called as:

In the T.S. of a root,

Morphologically the white fluffy edible mass in maize is:

Phenotype of an organism is the result of:

Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in:

Synthetic auxins are employed for:

Basis of Taxonomy are:

Eutrophication in the Chesapeake Bay along the eastern edge of Maryland has resulted in low oxygen levels in the water and alternation of food webs. The cause of this eutrophication appears to be pollution that contains high levels of:

Cell wall in higher plants is made up of:

If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be:

Which combination of gases is suitable for fruit ripening?

Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

Aldolase is found in:

Which one of the following is the most suitable, medium for culture of Drosophila melanogaster?

Which of the following is a defining characteristic of living organisms?

Commitments made by the biggest emitters at Paris meet are:

1. EU will cut its emission by 40% compared with 1990 level by 2030.

2. The US will cut its emission by 26% - 28% compared with 2005 level by 2025.

3. China will agree that its emission will peak by 2030.

4. Japan will cut its emission by 70% compared to 1990 level by 2030.

Select the correct answer using the codes given below.

The plant group that produces spores and embryo but lacks vascular tissues and seeds is:

The broadest category of organism in biological taxonomy is:

Flowering plants belongs to the sub-kingdom:

Pruning of plants promotes branching due to sensitization of axillary buds by:

A cross involving parents differing only in one trait is:

A major characteristic of the monocot root is the presence of:

Which of the following is not a characteristic of the anatomy of dicotyledonous roots?

After fertilization ______ develops into seed and ovary into fruit.

Climate change may have an impact on the following:

The cell wall of fungi is made up of which substance?

Mendel carried out his experiment on pea plant. He focused on which of the following traits?

Seeds are called products of sexual reproduction because they_________.

In transgenics, the expression of transgene in target tissue is determined by:

An aphid has two modes of reproduction; sexual, when food is sufficient and ___________, when there is scarcity of food and uncrowded.

__________ is a form of reproduction which does not involve a male gamete.

Consider the following statements:

1. With 17% of the world's population, India contributes only 4% of the total global greenhouse gas emission.

2. India's CO₂  emissions are approximately 1 tonne per annum as against a world average of 4.2 tonnes per annum.

3. India is one of the few developing countries in the world where the forest cover is increasing, despite the pressure of population growth and rapid economic development.

Which of the statements given above is/are correct?

Which of the following carries glucose from the digestive tract to the liver?

Diseases that are caused by the malfunction of a phototropic gene are:

A certain patient is suspected to be suffering from acquired immunodeficiency syndrome. Which diagnostic technique will you recommend for its detection?

Why asexual reproduction is sometimes disadvantageous?

Which is not a disorder of digestive system?

In his theory of natural selection, Charles Darwin suggested "survival of fittest" as basis of organic evolution. The correct explanation for "survival of fittest" is:

Which of the following technique is employed to check the progression of a restriction enzyme digestion?

The colour composition of beetle population is likely to change in the following manner:

Presence of nematocysts is a characteristic feature of the phylum:

Bt toxin kills insect by:

Phosphagen in vertebrates is:

What causes the inactive form of Bt toxin i.e., protoxin to get converted into its active form in the body of an insect?

Match List-I (Substructures) will List-II (Functions) and select the correct answer using the codes given the lists.

Fatty acids and glycerol are first absorbed by:

Trichoderma harzianum has proved to be a useful micro-organism for:

Vitamin-B₁₂ is absorbed primarily in the:

To carry out a Polymerase Chain Reaction (PCR), one must have the catalytic DNA polymerase and:

Some green beetles appear among the red beetle because:

Which of the following is not true about the plasma membrane?

Giant mouse has been produced through:

Formation of rudimentary eyes shows the evolution in an organism is:

The third name of the trinomial nomenclature is of:

In case of a parasitic food chain, the shape of the pyramid of number is always:

In humans, at the end of the first meiotic division, the male germ cells differentiate into the:

The shape of the cell is related to:

The main purpose for the classification of organisms is to:

The upper part of sea/aquatic ecosystem contains:

Barrier layer refers to:

Identify the cell organelle which is not found in human cell?

Which of the following conditions indicate the impact of global warming?

1. Melting of glaciers

2. Lowering down of sea level

3. Changes in weather conditions

4. Rise in global temperature.

Select the correct answer from the codes given below:

Which component is formed by plants in the ecosystem?

Which of the following types of ELISA contain the following steps?

Antigen binding, Blocking, Primary antibody, Secondary antibody. Enzyme-linked antibody, Substrate, Colorimetric reading (Represented in diagram).

A third generation pesticide is:

Which one of the following statement is not correct?

Cells are limited in size by the:

In small intestine, active absorption occurs in case of ______.

In the zoological name of fish Catla catla, the specific name is identical with the generic name, thus it is an example of ______________.

A group of laboratory mice having tails are bred together and their progeny is studied. The progeny had tails. However, scientist surgically removed the tails of the progeny and again bred them for four successive generations. What do you think would be the nature of the new progeny?

Identify the given diagram of tissue performing secretion and absorption:

Taxonomy related to morphology is ________.

The number of spermatozoa, a single primary spermatocyte ultimately produces in spermatogenesis is: