Which one of the following is a non - reducing carbohydrate?

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

In 'S' phase of the cell cycle

The enzyme recombinase is required at which stage of meiosis?

In which one of the following processes CO2 is not released?

Dr. F. went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white -colour

Which one of the following growth regulators is known as 'stress hormone'?

Select the option which is not correct with respect to enzyme action.

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs

Person with blood group AB is considered as universal recipient because he has

How do parasympathetic neutral signals affect the working of the heart?

Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

Select the correct matching of the type of the joint with the example in human skeletal system.

Stimulation of a muscle fiber by a motor neuron occurs at

Injury localized to the hypothalamus would most likely disrupt

Which one of the following statements is not correct?

Identify the hormone with its correct matching of source and function.

Flight-or-flight reactions cause activation of

Male gametophyte with least number of cells is present in

Which of the following shows coiled RNA strand and capsomeres?

Five kingdom system of classification suggested by R.H. Whittaker is not based on

Archaebacteria differ from eubacteria in

Viruses have

The motile bacteria are able to move by

Which structures perform the function of mitochondria in bacteria?

Anoxygenic photosynthesis is characteristic of

Which one of the following is wrong about Chara?

Which one of the following shows isogamy with non-flagellated gametes?

Which of the following is responsible for peat formation?

Select the taxon mentioned that represents both marine and fresh water species.

Which one of the following living organisms completely lacks a cell wall?

Planaria possesses high capacity of

Planaria possesses high capacity of

A marine cartilaginous fish that can produce electric current is

Placenta and pericarp are both edible portions in

An example of edible underground steam is

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

Which one of the following statements is correct?

Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D

Which vector can clone only a small fragment of DNA ?

Commonly used vectors for human genome sequencing are :

The first human hormone produced by recombinant DNA technology is :

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory b

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the

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If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the followi

An example of ex situ conservation is :

A species facing extremely high risk of extinction in the immediate future is called :

The organization which publishes the Red List of species is :

An analysis of chromosomal DNA using the Southern hybridization technique does not use:

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you u

Tracheids differ from other tracheary elements in :

Choose the correctly matched pair :

Choose the correctly matched pair:

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

The osmotic expansion of a cell kept in water is chiefly regulated by:

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Which of the following is a hormone releasing Intra Uterine Device (IUD)?

An aggregate fruit is one which develops from

Geitonogamy involves

Function of filiform apparatus is to

Pollen tablets are available in the market for

Non-albuminous seed is produced in

The shared terminal duct of the repoductive and urinary system in the human male is

The main function of mammalian corpus luteum is to produce

Select the correct option describing gonadotropin activity in a normal pregnant female.

Tubectomy is a method of sterilization in which :

Assisted reproductive technology, IVF involves transfer of :

Transformation was discovered by :

Which one of the following is wrongly matched?

Select the correct option ;

Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below?

At which stage of HIV infection does one usually show symptoms of AIDS ?

To obtain virus−free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased pl

Which one of the following fungi contains hallucinogens?

An alga which can be employed as food for human being is :

What gases are produced in anaerobic sludge digesters ?

Which of the following complexes is used to be as an anticancer agent?

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is

Among the following sets of reactants which one produces anisole?

The pair of compounds that can exist together is

(I)   H2O2 + O3 $$ \to $$ H2O + 2O2 (II)   H2O2 + Ag2O $$ \to $$ 2Ag + H2O + O2 Role of Hy

In acidic medium, H2O2 changes Cr2O72- to CrO5 which has two ($$-$$O$$-$$O$$-$$) bonds. Oxidation state of Cr in CrO5 is

Which one is most reactive towards nucleophilic addition reaction?

In the following reaction, the product (A) is

Which of the following will be most stable diazonium salt RN2+X$$-$$?

Which of the following hormones is produced under the condition of stress which simulate glycogenlysis in the liver of h

D(+)-glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be

Which of the following will not be soluble in sodium hydrogen carbonate?

Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?

When 0.1 mol MnO$$_4^{2 - }$$ is oxidised the quantity of electricity required to completely oxidise MnO$$_4^{2 - }$$ to

The weight of silver (at. wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be

Acidity of diprotic acids in aqueous solutions increases in the order

The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives

Reason of lanthanoid contraction is

Magnetic moment 2.83 BM is given by which of the following ions? (At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)

For the reaction, $${X_2}{O_{4\left( l \right)}}\,\, \to \,\,2X{O_{2(g)}}$$ $$\Delta $$U = 2.1 kcal, $$\Delta $$S = 20

Equal masses of H2, O2 and methane have been taken in a container of volume V at temperature 27oC in identical condition

When 22.4 liters of H2(g) is mixed with 11.2 litres of Cl2(g), each at S.T.P. the moles of HCl(g) formed is equal to

1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel, Which reactant is left in excess and how much ? (At. wt.

What is the maximum number of orbitals that can be identified with the following quantum numbers ? n = 3, l = 1, m1 = 0

Calculate the energy in joule corresponding to light of wavelength 45 nm. (Planck,s constant, h = 6.63 $$ \times $$ 10$$

Be2+ is isoelectronic with which of the following ions ?

Which of the following orders of ionic radii is correctly represented ?

Which of the following molecules has the maximum dipole moment ?

Which one of the following species has plane triangular shape ?

Which of the following statements is correct for the spontaneous adsorption of a gas?

Which of the following salts will give highest pH in water?

Using the Gibb's energy change, $$\Delta $$Go = +63.3 kJ, for the following reaction, Ag2CO3(s) $$\rightleftharpoons$$

For a given exothermic reaction, Kp and K'p are the equilibrium constants at temperatures T1 and T2, respectively. Ass

For the reversible reaction, N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g) + heat The equilibrium shifts in forward

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neut

What products are formed when the following compound is treated with Br2 in the presence of FeBr3?

Identify Z in the sequence of reactions :

Which of the following organic compounds has same hybridization as its combustion product (CO2)?

Which of the following compounds will undergo racemisation when solution of KOH hydrolyses?

Light with an energy flux of 25 $$ \times $$ 104 W m$$-$$2 falls on a perfectly reflecting surface at normal incidence.

A conducting sphere of radius R is given a charge Q. The electric potential and the electric field at the centre of the

Two thin dielectric slabs of dielectric constants K1 and K2(K1 < K2) are inserted between plates of a parallel plate

The resistances in the two arms of the meter bridge are 5 $$\Omega $$ and R$$\Omega $$ respectively. When the resistance

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used acro

Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of pote

Two identical long conducting wires $$AOB$$ and $$COD$$ are placed at right angle to each other, with one above other su

In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance o

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole momen

A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil i

In a region, the potential is represented by V(x, y, z) = 6x $$-$$ 8xy $$-$$ 8y + 6yz,   where $$V$$ is in vol

A beam of light of $$\lambda = 600$$ nm from a distant source falls on a single slit 1 mm wide and the resulting diffra

In the Young's double slit experiment, the intensity of light at a point on the screen where the path difference $$\lamb

The angle of a prism is A. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2 A o

If the focal length of objective lens is increased then magnifying power of

When the energy of the incident radiation is increased nby 20%, the kinetic energy of the photoelectrons emitted from a

If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de Brogl

The binding energy per nucleon of and nuclei are 5.60 MeV and 7.06 MeV respectively. In the nuclear reaction $${}_3^7Li

Hydrogen atom in ground state is excited by a monochromatic radiation of $$\lambda $$ = 975 $$\mathop A\limits^ \circ $

The given graph represents V-I characteristic for a semiconductor device. Which of the following statement is correct

Copper of fixed volume V is drawn into wire of length $$l$$. When this wire is subjected to a constant force F, the exte

A projectile is fired from the surface of the earth with a velocity of 5 m s$$-$$1 and angle $$\theta $$ with the hor

A particle is moving such that is position coordinates (x, y) are (2 m, 3 m) at time t = 0, (6 m, 7 m) at time t = 2 s

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from i

A system consists of three masses m1, m2 and m3 connected by a string passing over a pulley P. The mass m1 hangs freely

The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of t

A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass (m)

A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate about the horizontal axis. A massless string is wound

The ratio of the accelerations for a solid sphere (mass m and radius R) rolling down an incline of angle $$\theta $$ wit

Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represen

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approxim

The barrier potential of a p-n junction depends on (1)   type of semiconductor material (2)   amou

A certain number of spherical drops of a liquid of radius r coalesce to form a single drop of radius R and volume V. If

Steam at 100oC is passed into 20 g of water at 10oC. When water acquires a temperature of 80oC, the mass of water presen

Certain quantity of water cools from 70oC to 60oC in the first 5 minutes and to 54oC in the next 5 minutes. The temperat

A monatomic gas at a pressure P, having a volume V expands isothermally to a volume 2V and then adiabatically to a volum

A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle is

The mean free path of molecules of a gas, (radius r) is inversely proportional to

The oscillation of a body on a smooth horizontal surface is represented by the equation, X = A cos$$\left( {\omega t} \

If n1, n2 and n3 are the fundamental frequencies of three segments into which a string is divided, then the original f

The number of possible natural oscillations of air column in a pipe closed at one end length 85 cm whose frequencies lie

If force (F), velocity (V) and time (T) are taken as fundamental units, then dimensions of mass are