Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

The stage during which separation of the paired homologous chromosomes begins is

Which of the following is not a product of light reaction of photosynthesis?

Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

The two functional groups characteristic of sugars are

Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?

Which of the following is an occupational respiratory disorder?

Which of these statements is incorrect?

What is the role of NAD+ in cellular respiration?

Calcium is important in skeletal muscle contraction because it

Nissl’s bodies are mainly composed of

Which of the following structures or regions is incorrectly paired with its functions?

The transparent lens in the human eye is held in its place by

Which of the following hormones can play a significant role in osteoporosis?

Which of the following is an amino acid derived hormone?

Which one of these animals is not a homeotherm?

Which among the following is not a prokaryote?

Select the wrong statement.

Oxygen is not produced during photosynthesis by

After karyogamy followed by meiosis, spores are produced exogenously in

Ciliates differ from all other protozoans in

Which of the following statements is correct?

Which one is wrongly matched?

Which of the following organisms are known as chief producers in the oceans?

Which of the following animals does not undergo metamorphosis?

Identify the vertebrate group of animals characterised by crop and gizzard in its digestive system.

Sweet potato is a modified

Stomata in grass leaf are

Secondary xylem and phloem in dicot stem are produced by

Casparian strips occur in

Which of the following is true for nucleolus?

Which of the following features is used to identify a male cockroach from a female cockroach?

The Golgi complex participates in

Plants having little or no secondary growth are

Which of the following events does not occur in rough endoplasmic reticulum?

Select the incorrect match.

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and it

Which of the following is not an autoimmune disease?

According to Hugo de Vries, the mechanism of evolution is

In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?

Conversion of milk to curd improves its nutritional value by increasing the amount of

Which part of poppy plant is used to obtain the drug “smack”?

Which one of the following population interactions is widely used in medical science for the production of antibiotics?

Niche is

Natality refers to

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

Pneumatophores occur in

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed m

A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long t

The correct order of steps in Polymerase Chain Reaction (PCR) is

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can comp

Pollen grains can be stored for several years in liquid nitrogen having a temperature of

All of the following are included in ‘ex-situ conservation’ except

What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g Primary consumer :

In a growing population of a country,

Which of the following pairs is wrongly matched?

Which of the following has proved helpful in preserving pollen as fossils?

The difference between spermiogenesis and spermiation is

Winged pollen grains are present in

Double fertilization is

Hormones secreted by the placenta to maintain pregnancy are

The amnion of mammalian embryo is derived from

Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla

The contraceptive ‘Saheli’

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

Match the items given in column I with those in column II and select the correct option given below. .tg {border-coll

Select the correct match :

Which of the following characteristics represent 'Inheritance of blood groups' in humans? a. Dominance b. Co-dominance

The experimental proof for semi-conservative replication of DNA was first shown in a

Select the correct statement :

Select the correct match :

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of

Among the following sets of examples for divergent evolution, select the incorrect option.

The similarity of bone structure in the forelimbs of many vertebrates is an example of

All of the following are part of an operon except

Iron carbonyl, Fe(CO)5 is

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gas

The correct difference between first and second order reactions is that

When initial concentration of the reactant is doubled, the half-life period of a zero order reaction

Which of the following statements is not true for halogens?

Which one of the following ions exhibits d-d transition and paramagnetism as well?

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the corr

The geometry and magnetic behaviour of the complex [Ni(CO)4] are

The type of isomerism shown by the complex [CoCl2(en)2] is

The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B

In the reaction, the electrophile involved is

The compound C7H8 undergoes the following reactions : The product ‘C’ is

Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with

Identify the major products P, Q and R in the following sequence of reactions :

Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It i

Nitration of aniline in strong acidic medium also gives m-nitroaniline because

Which of the following compounds can form a zwitter ion?

The difference between amylose and amylopectin is

The solubility of BaSO4 in water is 2.42 × 10–3 g L–1 at 298 K. The value of its solubility product (Ksp) will be (Give

In which case is number of molecules of water maximum?

Consider the following species : CN+ , CN– , NO and CN. Which one of these will have the highest bond order?

Which of the following oxides is most acidic in nature?

The correct order of atomic radii in group 13 elements is

The bond dissociation energies of X2 , Y2 and XY are in the ratio of 1 : 0.5 : 1. $$\Delta $$H for the formation of XY

In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : A. 60 mL $${

Which one of the following conditions will favour maximum formation of the product in the reaction A2(g) + B2(g) ⇌ X2(g

For the redox reaction, MnO4– + C2O4 2– + H+ $$ \to $$ Mn2+ + CO2 + H2O The correct coefficients of the reactants for

Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram :

The correct order of N-compounds in its decreasing order of oxidation states is

Which of the following is correct with respect to – I effect of the substituents? (R = alkyl)

Which one of the following elements is unable to form MF63– ion?

Which of the following molecules represents the order of hybridisation sp2 , sp2 , sp, sp from left to right atoms?

Which of the following carbocations is expected to be most stable?

Which one is a wrong statement?

A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4 . The evolved gaseous mixture is passed

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale readin

An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced throu

A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field

A battery consists of a variable number n of identical cells (having internal resistance r each) which are connected in

A carbon resistor of (47 $$ \pm $$ 4.7) k$$\Omega $$ is to be marked with rings of different colours for its identificat

A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. Th

A metallic rod of mass per unit length 0.5 kg m–1 is lying horizontally on a smooth inclined plane which makes an angle

A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet

The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This ind

Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit v

An EM wave is propagating in a medium with a velocity $$\overrightarrow v = v\widehat i$$. The instantaneous oscillatin

The refractive index of the material of a prism is $$\sqrt 2 $$ and the angle of the prism is 30°. One of the two refrac

An inductor 20 mH, a capacitor 100 $$\mu $$F and a resistor 50 $$\Omega $$ are connected in series across a source of em

A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by

In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength $$\lambda $$ of the light u

Unpolarised light is incident from air on a plane surface of a material of refractive index $$\mu $$. At a particular an

An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an o

An electron of mass m with an initial velocity $$\overrightarrow v = {v_0}\widehat i$$ (v0 > 0) enters an electric

When the light of frequency 2$${\upsilon _0}$$ (where $${\upsilon _0}$$ is threshold frequency), is incident on a meta

In the combination of the following gates the output Y can be written in terms of inputs A and B as

The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

In a p-n junction diode, change in temperature due to heating

Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the seco

Which one of the following statements is incorrect?

A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest aft

A block of mass m is placed on a smooth inclined wedge ABC of inclination q as shown in the figure. The wedge is given a

A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes

A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy (Kt) as well as rot

A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping i

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are KA, KB and KC, respec

A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 105 N m–2) requires 54 cal of heat energy to convert t

The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the

The power radiated by a black body is P and it radiates maximum energy at wavelength, $$\lambda $$0 . If the temperature

Three objects, A : (a solid sphere), B : (a thin circular disk) and C : (a circular ring), each have the same mass M and

The moment of the force, $$\overrightarrow F = 4\widehat i + 5\widehat j - 6\widehat k$$ at (2, 0, –3), about the point

A small sphere of radius ‘r’ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. Th

If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitud

The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of

A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic

The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A,

At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphe

An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E.