Choose the correct statement.

Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

Phytochrome is a

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

The partial pressure of oxygen in the alveoli of the lungs is

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the

Serum differs from blood in

The part of nephron involved in active reabsorption of sodium is

Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.

Osteoporosis, an age-related disease of skeletal system, may occur due to

Oxidative phosphorylation is

Graves' disease is caused due to

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisatio

The posterior pituitary gland is not a 'true' endocrine gland because

In majority of angiosperms

Pollination in water hyacinth and water lily is brought about by the agency of

The ovule of an angiosperm is technically equivalent to

Which of the following depicts the correct pathway of transport of sperms?

How many plants among Indigofera., Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stam

Match column I with column II for housefly classification and select the correct option using the codes given below. .

Study the four statements (A-D) given below and select the two correct ones out of them. A.  Definition of bi

Which one of the following is wrong for fungi?

Select the wrong statement.

Methanogens belong to

Conifers are adapted to tolerate extreme environmental conditions because of

Which one of the following statements is wrong?

Choose the correct statement

The term 'polyadelphous' is related to

Free-central placentation is found in

Match column I with column II and select the correct option using the codes given below. .tg {border-collapse:collaps

Radial symmetry is found in the flowers of

A non-proteinaceous enzyme is

Which of the following is the least likely to be involved in stablishing the three-dimensional folding of most proteins?

Which of the following describes the given graph correctly?

During cell growth, DNA synthesis takes place on

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option usi

The process which makes major difference between C3 and C4 plants is

Red List contains data or information on

A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using

Which of the following is not a component of downstream processing ?

Which of the following restriction enzymes produces blunt ends ?

Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase [ADA] deficiency ?

Which of the following is correct for r-selected species ?

If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the

The principle of competitive exclusion was stated by

The primary producers of the deep-sea hydrothermal vent ecosystem are

How many hot spots of biodiversity in the world have been identified till date by Norman Myers ?

Which of the following is correctly matched ?

Which of the following National Parks is home to the famous musk deer or hangul ?

Stirred-tank bioreactors have been designed for -

The balloon-shaped structures called tyloses

Cortex is the region found between -

In male cockroaches, sperms are stored in which part of the reproductive system ?

Smooth muscles are

Select the wrong statement-

A cell organelle containing hydrolytic enzymes is

Select the mismatch.

DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the

Several hormones like hCG, hPL, estrogen, progesterone are produced by

Which of the following is hormone releasing IUD ?

Which of the following is incorrect regarding vasectomy ?

Embryo with more than 16 blastgomeres formed due to in vitro fertilization is transferred into

The mechanism that causes a gene to move from one linkage group to another is called

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being col

Taylor conducted the experiments to prove semiconservative mode of chromosome replication on

The equivalent of a structural gene is -

Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria ?

A molecule that can act as a genetic material must fulfill the traits given below, except

The label of a herbarium sheet does not carry information on

Genetic drift operates in

In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

The chronological order of human evolution from early to the recent is

Which of the following is the correct sequence of events in the origin of life ? I. Formation of protobionts II. Synthes

Which of the following sets of diseases is caused by bacteria ?

Which of the following is correct regarding AIDS causative agent HIV ?

Match Column-I with Column-II and select the correct option using the codes given below – .tg {border-collapse:collaps

Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weights 10 g and 0.05 mole

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

The correct order of strengths of the carboxylic acids is

The correct structure of the product 'A' formed in the reaction

Which one of the following nitro-compounds does not react with nitrous acid?

A given nitrogen-containing aromatic compound 'A' reacts with Sn/HCl, followed by HNO2 to give instable compound 'B'. 'B

The central dogma of molecular genetics states that the genetic information flows from

The correct corresponding order of names of four aldoses with configuration given below respectively, is

Which one of the following is incorrect for ideal solution?

The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is

The molar conductivity of a 0.5 mol/dm3 solution of AgNO3 with electrolytic conductivity of 5.76 $$ \times $$ 10$$-$$3 S

The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge o

During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current

If the Eocell for a given reaction has a negative value, which of the following gives the correct relationships for the

The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the

Boric acid is an acid because its molecule

AlF3 is soluble in HF only in presence of KF. It is due to the formation of

Which one of the following statements related to lanthanoids is incorrect?

Jahn-Teller effect is not observed in high spin complexes of

The correct increasing order of trans-effect of the following species is

The solubility of AgCl(s) with solubility product 1.6 $$ \times $$ 10$$-$$10 in 0.1 M NaCl solution would be

How many electrons can fit in the orbital for which n = 3 and $$l$$ = 1?

Which of the following pairs of d-orbitals will have electron density along the axes ?

Which one of the following compounds shows the presence of intramolecular hydrogen bond?

The hybridizations of atomic orbitals of nitrogen in NO$$_2^ + $$, NO$$_3^ - $$  and  NH$$_4^ + $$&n

Which of the following pairs of ions is isoelectronic and isostructural ?

The correct geometry and hybridization for XeF4 are

Among the following, which one is a wrong statement ?

For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by

The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) ina 0.10 M aqueous pyridine solution (Kb for C5H

Which of the following fluro-compounds is most likely to behave as a Lewis base ?

Which among the given molecules can exhibit tautomerism?

In which of the following molecules, all atoms are coplanar?

Which of the following can be used as the halide component for Friedel-Crafts reaction?

In pyrrole the electron density is maximum on

Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only e

In the given reaction, the product P is

The compound that will react most readily with gaseous bromine has the formula

Consider the reaction, CH3CH2CH2Br + NaCN $$ \to $$ CH3CH2CH2CN + NaBr This reaction will be the fastest in

Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show ox

The interference pattern is obtained with two coherent light sources of intensity ratio n. In the interference pattern,

A parallel-plate capacitor of area a, plate separation d and capacitance C is filled with four dielectric materials havi

The potential difference (VA $$-$$ VB) between the points A and B in the given figure is

A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. When a resistance R is connected in series, it work

A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the

An electron is moving in a circular path under the influence of a transverse magnetic field of 3.57 $$ \times $$ 10-2 T.

A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The ene

Which of the following combinations should be selected for better tuning of an L-C-R circuit used for combination ?

A uniform magnetic field is restricted within a region of rafius r. The magnetic field changes with time at a rate $${{d

The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an

A 100 $$\Omega $$ resistance and a capacitor of 100 $$\Omega $$ reactance are connected in series across a 220 V source.

Two identical glass ($$\mu $$g = 3/2) equiconvex lenses of focal length $$f$$ each are kept in contact. The space betwee

An electric dipole is placed at an angle of 30o with an electric field intensity 2 $$ \times $$ 105 N C$$-$$1. It experi

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surfac

A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aparture is

A person can see clearly objects only when they lie between 50 cm and 400 cm from his eyes . In order to increase the ma

Photons with energy 5 eV are incifent on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectro

Electrons of mass m with de-Broglie wavelength $$\lambda $$ fall on the target in an X-ray tube. The cutoff wavelength (

If an electron in a hydrogen atom jumps from the 3rd orbit to the 2nd orbit, it emits a photon of wavelength $$\lambda $

The given circuit has two ideal diodes connected as shown in the figure. The current flowing through the resistance R1 w

What is the output Y in the following circuit, when all the three inputs A, B, C are first 0 and then 1 ?

Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by

Two cars P and Q start from a point at the same time in a straight line and their positions are represented by xP(t) =

In the given figure, a = 15 m s$$-$$2 represents the total acceleration of particle moving in the clockwise direction in

A rigid ball of mass m strikes a rigid wall at 60o and gets reflected without loss of speed as shown in the figure. The

Two identical balls A and B having velocities of 0.5 m s$$-$$1 and $$-$$0.3 m s$$-$$1 respectively collide elastically

A bullet of mass 10 g moving horizontally with a velocity of 400 m s$$-$$1 strikes a wood block of mass 2 kg which is su

A particle moves from a point $$\left( { - 2\widehat i + 5\widehat j} \right)$$ to $$\left( {4\widehat j + 3\widehat k}

Two rotating bodies A and B of masses m and 2m with moments of inertia $${I_A}$$ and $${I_B}$$ ($${I_B}$$ > $${I_A}

A solid sphere of mass m and radius R is rotating about its diameter. A solid cylinder of same mass and same radius is a

A light rod of length $$l$$ has two masses m1 and m2 attached to its two ends. The moment of inertia of the system about

A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the satell

A body cools from a temperature 3T to 2T in 10 minutes. The room temperature is T. Assume that Newton's law of cooling i

Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at 1

A rectangular film of liquid is extended from (4 cm $$ \times $$ 2 cm) to (5 cm $$ \times $$ 4 cm). If the work done is

Three liquids of densities $$\rho $$1, $$\rho $$2  and $$\rho $$3 (with $$\rho $$1 > $$\rho $$2 > $$\rho

One mole of an ideal monatomic gas undergoes a process described by the equation PV3 = constant. The heat capacity of th

The temperature inside a refrigerator is t2 oC. The amount of heat delivered to the room for each joule of electrical en

A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule

A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When

Three sound waves of equal amplitudes have frequencies (n $$-$$ 1), n, (n + 1). They superimpose to give beats. The num

The second overtone of an open organ pipe has the same frquency as the first overtone of a closed pipe L metre long. The

Planck's constant (h), speed of light in vacuum (c) and Newton's gravitional constant (G) are three fundamental constant