Kranz anatomy is one of the characteristics of the leaves of

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How m

Secretions from which one of the following are rich in fructose, calcium and some enzymes?

In human female the blastocyst

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the releas of

Vegetative propagation in Pistia occurs by

Select the answer with correct matching of the structure, its location and function.

The haemoglobin content per 100 ml of blood of a normal healthy human adult is

Given below are four statements (i-iv) regarding human blood circulatory system. (i)  Arteries are thick-walle

Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it i

Root development is promoted by

One of the commonly used plant growth hormone in tea plantations is

Study the pedigree chart of a certain family given below and select the correct conculusion which can be drawn for the c

Read the following four statements, (i), (ii), (iii) and (iv) and select the right opening having both correct statemen

The figure given below shows the conversion of a substate into product by an enzyme. In which one of the four options (a

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

Consider the following four statements (i), (ii), (iii) and (iv) and select the right option for two correct statements.

The correct floral formula of soyabean is

Which one of the following is a xerophytic plant in which the stem is modified into the flat green and succulent structu

Crocodile and penguin are similar to whale and dogfish in which one of the following features?

In which one of the following organisms its excretory organs are correctly stated?

Which one of the following is monoecious?

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) &nb

Black (stem) rust of wheat is caused by

Which one of the following is most appropriately defined ?

Examine the figures (A-D) given below and select the right option out of (a – d), in which all the four structures A, B,

Study the pathway given below: In which of the following options correct words for all the three blanks A, B and C are

Aestivation of petals in the flower of cotton is correctly shown in

Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct?

Given below is the diagram of a bacteriophage. In which one of the options all the four parts A, B, C and D are correct?

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with – Com

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of

Which one of the following pairs of structures is correctly matched with their corrected description ?

Transport of food material in higher plants takes place through -

The Indian Rhinoceros is a natural inhabitant of which one of the Indian states ?

Which of the following representations shows the pyramid of numbers in a forest ecosystem ?

Which one of the following is now being commercially produced by biotechnological procedures ?

In genetic engineering, a DNA segment (gene) of interest,is transferred to the host cell through a vector. Consider the

An example of endomycorrhiza is -

A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when

Which one of the following techniques is safest for the detection of cancers ?

The most apparent changes during the evolutionary history of Homo sapiens is traced in

Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks

Which one of the follwoing statements about the particular entity is true ?

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the -

The lac Operon consists of -

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join -

In antirrhinum two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the p

A cross in which an organism showing a dominant phenotype in crossed with the recessive parent in order to know its geno

Which of the following oxidation states is the most common among the lanthanoids?

Which of the following conformers for ethylene glycol is most stable?

Match List I (substances) with List II (processes) employed in the manufacture of the substances and select the correct

How many bridging oxygen atoms are present in P4O10?

The rate of the reaction, 2NO + Cl2 $$ \to $$ 2NOCl is given by the rate equation rate = k[NO]2[Cl2]. The value of the r

Consider the following relations for emf of an electrochemical cell (i)   EMF of cell = (Oxidation potential o

Which of the following expressions correctly represents the equivalent conductance at infinite diluation of Al2(SO4)3. G

Fructose reduces Tollen's reagent due to

Which one of the following compounds will be most readily dehydrated?

Match the compounds given in List I with their characteristic reactions given in List II. Select the correct option. .t

When glycerol is treated with excess of HI, it produces

Following compounds are given Which of the above compound(s), on being warmed with iodine solution and NaOH, will give

In the following reaction the product 'X' is

Which of the following species is not electrophilic in nature?

The IUPAC name of the compound CH3CH$$=$$CHC$$ \equiv $$CH is

The reaction, 2A(g) + B(g) $$\rightleftharpoons$$ 3C(g) + D(g) is begun with the concentrations of A and B both at an

The following two reactions are known Fe2O3(s) + 3CO(g) $$ \to $$ 2Fe(s) + 3CO2(g); $$\Delta $$H = $$-$$ 26.8 kJ FeO(s)

For vaporization of water at 1 atmospheric pressure, the values of $$\Delta $$H and $$\Delta $$S are 40.63 kJ mol$$-$$1

Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

Match List I (Equations) with List II (Type of processes) and select the correct option. .tg {border-collapse:collaps

In which of the following molecules the central atom does not have sp3 hybridization?

Some of the properties of the two species, $$NO_3^ - $$ and $${H_3}{O^ + }$$ are described below. Which one of them i

Among the following which one has the highest cation to anion size ratio ?

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is

A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be (h = 6.6 $$ \times $$ 10$$-$$34 J s

A current loop consists of two identical semicircular parts each of radius R, one lying in the x-y plane and the other i

The following figure shows a logic gate circuit with two inputs A and B and the output Y. The voltage waveforms of A, B

The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV, respectively. When two deuterium

The electron in the hydrogen atom jumps from excited state (n = 3) to its ground state (n = 1) and the photons thus emit

When monochromatic radiation of intensity $$I$$ falls on a metal surface, the number of photoelectrons and their maximum

A rays of light is incident on a 60o prism at the minimum deviation position. The angle of refraction at the first face

The speed of light in media M1 and M2 are 1.5 $$ \times $$ 108 m/s and 2.0 $$ \times $$ 108 m/s respectively. A ray of l

The electric field of an electromagnetic wave in free space is given by $$\overrightarrow E = 10\cos ({10^7}t + kx)\wid

A condenser of capacity C is charged to a potential difference of V1. The plates of th condenser are then connected to a

The magnetic moment of a diamagnetic action is

Two identical bar magnets are fixed with their centers at a distance d apart. A stationary charge Q is placed at P in be

A closely wound solenoid of 2000 turns and area of cross-section 1.5 $$ \times $$ 10$$-$$4 m2 carries a current of 2.0 A

A particle having a mass of 10$$-$$2 kg carries a charge of 5 $$ \times $$ 10$$-$$8 C. The particle is given an initial

The electric field at a distance $${{3R} \over 2}$$ from the centre of a charged conducting spherical shell of radius R

Two parallel metal plates having charges +Q and $$-$$Q face each other at a certain distance between them. If the plates

A monatomic gas at pressure P1 and volume V1 is compressed adiabatically to $${{1 \over 8}^{th}}$$ of its original volum

If cp and cv denote the specific heats (per unit mass of an ideal gas of molecular weight M, then

The dependence of acceleration due to gravity g on the distance r from the centre of the earth, assumed to be a sphere o

(1)   Centre of gravity (C.G) of a body is the point at which the weight of the body acts (2) &nbsp

The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M, to transfer i

A thin circular ring of mass M and radius r is rotating about its axis with constant angular velocity $$\omega $$. Two o

A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same heig

From a circular disc of radius R and mass 9M, a small disc of mass M and radius $${R \over 3}$$ is removed concentricall

A particle of mass M, starting from rest, undergoes uniform acceleration. If the speed acquired in time T is V, the powe

A particle moves in x-y plane according to rule x = asin$$\omega $$t and y = acos$$\omega $$t. The particle follows

The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is

A student measures the distance traversed in free fall of a body, initially at rest, in a given time. He uses this data