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In Calotropis, aestivation is :

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Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of :

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How many times decarboxylation occurs during each TCA cycle?

The dissolution of synaptonemal complex occurs during :

Identify the correct statements regarding Mass flow hypothesis. (A) Mass flow is faster than diffusion. (B) Mass flow is

Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after :

Given below are two statements : Statement I : RuBisCO is the most abundant enzyme in the world. Statement II : Photores

In 'rivet popper hypothesis', Paul Ehrlich compared the rivets in an airplane to :

In a pea flower, five petals are arranged in a specialized manner with one posterior, two lateral and two anterior. Thes

In which of the following sets of families, the pollen grains are viable for months?

Transfer of pollen grains from anther to stigma of another flower of same plant is known as :

The phenomenon which is influenced by auxin and also played a major role in its discovery :

The transverse section of a plant part showed polyarch, radial and exarch xylem, with endodermis and pericycle. The plan

What will happen if fresh water lake gets contaminated by addition of polluted water with high BOD?

The last chromosome sequenced in Human Genome Project was:

The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referre

Plants offer rewards to animals in the form of pollen and nectar and the animals facilitate the pollination process. Thi

The species of plants that plays a vital role in controlling the relative abundance of other species in a community is c

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Inulin is a polymer of :

Thermostable DNA polymerase used in PCR was isolated from :

Name the component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the oper

A heterozygous pea plant with violet flowers was crossed with homozygous pea plant with white flower. Violet is dominant

Fatty acids are connected with the respiratory pathway through :

Ligation of foreign DNA at which of the following site will result in loss of tetracyclin resistance of pBR322 :

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During symport two different molecules move across the membrane :

Which classes of algae possess pigment fucoxanthin and pigment phycoerythrin, respectively ?

In which disorder change of single base pair in the gene for beta globin chain results in change of glutamic acid to v

For chemical defence against herbivores, Calotropis has :

Consider the following tissues in the stelar region of a stem showing secondary growth. (A) Primary xylem (B) Secondary

Which of the following mineral ion is not remobilized in plants?

Which out of the following statements is incorrect?

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In angiosperms the correct sequence of events in formation of female gametophyte in the ovule is : (A) 3 successive free

Which of the following statements is true?

Which of the following statement is incorrect about Agrobacterium tumifaciens?

Consider the following plant tissues : (A) Axillary buds (B) Fascicular vascular cambium (C) Interfascicular cambium (D)

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Given below are two statements : Statement I : The process of copying genetic information from one strand of the DNA in

Which scientist conducted an experiment with 32P and 35S labelled phages for demonstrating that DNA is the genetic mate

A certain plant homozygous for yellow seeds and red flowers was crossed with a plant homozygous for green seeds and wh

During which stages of mitosis and meiosis, respectively does the centromere of each chromosome split ?

Which of the following statements is not correct ?

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Given below are two statements : Statement I : The process of translocation through phloem is unidirectional but throu

Which of the following sexually transmitted infections are completely curable ?

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Which of the following is not a secondary metabolite?

Arrange the sequence of different hormones for their role during gametogenesis. (A) Gonadotropin LH stimulates synthesi

House fly belongs to _____ family.

Select incorrect statement, regarding chemical structure of insulin.

Which one of the following is the quiescent stage of cell cycle?

Given below are two statements : Statement I : RNA being unstable, mutate at a faster rate. Statement II : RNA can dir

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (

The Cockroach is :

Which of the following statements are correct with respect to the hormone and its function? (A) Thyrocalcitonin (TCT)

Select the sequence of steps in Respiration. (A) Diffusion of gases (O2 and CO2) across alveolar membrane. (B) Diffusio

Which of the following is/are cause(s) of biodiversity losses ?

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Which of the following can act as molecular scissors?

Select the correct statements about sickle cell anaemia. (A) There is a change in gene for beta globin. (B) In the

Given below are two statements : Statement I :- Intra Cytoplasmic Sperm Injection (ICSI) is another specialised proced

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Given below are two statements : Statement I :- Goblet cells are unicellular glands. Statement II :- Earwax is the se

Given below are two statements regarding oogenesis: Statement I :- The primary follicles get surrounded by more layer

If there are 250 snails in a pond, and within a year their number increases to 2500 by reproduction. What should be th

Given below are two statements : Statement I :- The nose contains mucus – coated receptors which are specialised for

Which one of the following acts as an inducer for lac operon ?

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Diacetyl morphine is also called as :

'X' and 'Y' are the components of Binomial nomenclature. This naming system was proposed by 'Z' :

Which of the following statements are correct ? (A) Reproductive health refers to total well-being in all aspects of

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Given below are two statements : Statement I :- In bacteria, the mesosomes are formed by the extensions of plasma memb

Select correct sequence of substages of Prophase-I of Meiotic division : (A) Zygotene (B) Pachytene (C) Diakinesis

Brainstem of human brain consists of :

Identify the fossil of man who showed the following characteristics. (A) Brain capacity of 1400 cc (B) Used hides to

With reference to Hershey and Chase experiments. Select the correct statements. (A) Viruses grown in the presence of r

Select the correct sequential steps regarding absorption of fatty acids and glycerol, in intestine. (A) Micelles are r

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion

The salient features of genetic code are : (A) The code is palindromic (B) UGA act as initiator codon (C) The code

Arrange the events of Renin - Angiotensin mechanism in correct sequence. (A) Activation of JG cells and release of re

Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen Demand. (A) BOD is inversely related

Given below are two statements : Statement I : Parathyroid hormone acts on bones and stimulates the process of bone re

Select the correct statements : (A) Platyhelminthes are triploblastic pseudocoelomate and bilaterally symmetrical or

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Which of the following statements are correct with respect of Golgi apparatus ? (A) It is the important site of forma

Select the incorrect statement with respect to Multiple Ovulation Embryo Transfer (MOET) Technology.

Given below are two statements : Statement I : In cockroach, the forewings are transparent and prothoracic in origin.

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Select the correct statement/s with respect to mechanism of sex determination in Grasshopper. (A) It is an example of

Incorrect set of quantum numbers from the following is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)

For a weak acid HA, the percentage of dissociation is nearly 1% at equilibrium. If the concentration of acid is 0.1 mol

The density of 1 M solution of a compound 'X' is 1.25 g mL$$^{-1}$$. The correct option for the molality of solution is

Consider the given reaction: $$\mathrm{CH}_3 \mathrm{COCH}_3 \stackrel{\text { dil } \mathrm{Ba}(\mathrm{OH})_2}{\longri

The $$\mathrm{E}^{\Theta}$$ values for $$\begin{aligned} & \mathrm{Al}^{+} / \mathrm{Al}=+0.55 \mathrm{~V} \text { and }

The correct order of dipole moments for molecules $$\mathrm{NH}_3, \mathrm{H}_2 \mathrm{~S}, \mathrm{CH}_4$$ and $$\math

Molar conductance of an electrolyte increase with dilution according to the equation: $$\Lambda_{\mathrm{m}}=\Lambda_{\m

Cheilosis occurs due to deficiency of _________.

The correct value of cell potential in volt for the reaction that occurs when the following two half cells are connected

Identify 'X' in above reactions

For a reaction $$3 \mathrm{~A} \rightarrow 2 \mathrm{~B}$$ The average rate of appearance of $$\mathrm{B}$$ is given by

The following conversion is known as:

Which amongst the following is used in controlling depression and hypetension?

Which one of the following represents all isoelectronic species ?

Given below are two statements: Statement I : The value of wave function, $$\psi $$ depends upon the coordinates of the

The correct van der Waals equation for 1 mole of a real gas is :

The correct option in which the density of argon (Atomic mass = 40) is highest:

Which of the following is correctly matched?

Which of the following is a positively charged sol?

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Which amongst the following reactions of alkyl halides produces isonitrile as a major product? (A) $$\mathrm{R-X+HCN\to}

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Which one of the following statements is incorrect related to Molecular Orbital Theory?

An acidic buffer is prepared by mixing :

Reagents which can be used to convert alcohols to carboxylic acids, are (A) $$\mathrm{CrO}_3-\mathrm{H}_2 \mathrm{SO}_4$

Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [M(H$$_2$$O$$_6$$]$$^{3+}$$

The correct options for the rate law that corresponds to overall first order reaction is

Which amongst the following compounds/species is least basic?

Which of the following forms a set of complex and a double salt, respectively?

Given below are two statements: Statement I : High density polythene is formed in the presence of catalyst triethylalumi

Which amongst the following compounds will show geometrical isomerism?

Given below are two statements: Statement I : Hydrated chlorides and bromides of $$\mathrm{Ca}, \mathrm{Sr}$$ and $$\mat

The correct order for the rate of $$\alpha,\beta$$-dehydrohalogenation for the following compounds is _________.

How many number of tetrahedral voids are formed in $$5 \mathrm{~mol}$$ of a compound having cubic close packed structure

Type of isomerism exhibited by compounds $$ \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6 \mathrm{Cl}_3,\left[

The correct sequence given below containing neutral, acidic, basic and amphoteric oxide each, respectively, is

Read the following statements and choose the set of correct statements : (A) Chrome steel is used for cutting tools and

Choose the correct sequence of reagents in the conversion of 4-nitrotoluene to 2-bromotoluene.

How are edge length '$$a$$' of the unit cell and radius '$$r$$' of the sphere related to each other in ccp structure? (C

Identify the product in the following reaction

Given below are two statements: Statement I : In an organic compound, when inductive and electromeric effects operate in

The correct option for a redox couple is:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)

Consider the following reaction :- $$2 \mathrm{H}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{H}_2 \m

Which statement is not true about photochemical smog?

Which amongst the following aqueous solution of electrolytes will have minimum elevation in boiling point? Choose the co

Identify 'X' in the following reaction.

The major product formed in the following conversion is ___________.

The variation of susceptibility $$(\chi)$$ with absolute temperature ( $$\mathrm{T}$$ ) for a paramagnetic material is r

A bullet of mass $$m$$ hits a block of mass $$M$$ elastically. The transfer of energy is the maximum, when :

The ground state energy of hydrogen atom is $$-13.6 ~\mathrm{eV}$$. The energy needed to ionize hydrogen atom from its s

The escape velocity of a body on the earth surface is $$11.2 \mathrm{~km} / \mathrm{s}$$. If the same body is projected

A lens is made up of 3 different transparent media as shown in figure. A point object O is placed on its axis beyond $$2

The diameter of a spherical bob, when measured with vernier callipers yielded the following values : $$3.33 \mathrm{~cm}

On the basis of electrical conductivity, which one of the following material has the smallest resistivity?

The mechanical quantity, which has dimensions of reciprocal of mass $$(\mathrm{M}^{-1})$$ is :

The position of a particle is given by $$\vec{r}(t)=4 t \hat{i}+2 t^2 \hat{j}+5 \hat{k} $$ where $$\mathrm{t}$$ is in se

For the given cycle, the work done during isobaric process is:

The equivalent capacitance of the arrangement shown in figure is:

An ac source is connected in the given circuit. The value of $\phi$ will be :

The given circuit is equivalent to:

A particle moves with a velocity $$(5 \hat{i}-3 \hat{j}+6 \hat{k}) ~\mathrm{ms}^{-1}$$ horizontally under the action of

A certain wire $$\mathrm{A}$$ has resistance $$81 ~\Omega$$. The resistance of another wire $$\mathrm{B}$$ of same mater

$$\epsilon_0$$ and $$\mu_0$$ are the electric permittivity and magnetic permeability of free space respectively. If the

The amount of elastic potential energy per unit volume (in SI unit) of a steel wire of length $$100 \mathrm{~cm}$$ to st

The $$4^{\text {th }}$$ overtone of a closed organ pipe is same as that of $$3^{\text {rd }}$$ overtone of an open pipe.

A long straight wire of length $$2 \mathrm{~m}$$ and mass $$250 \mathrm{~g}$$ is suspended horizontally in a uniform hor

According to Gauss law of electrostatics, electric flux through a closed surface depends on :

A ball is projected from point A with velocity $$20 \mathrm{~m} \mathrm{~s}^{-1}$$ at an angle $$60^{\circ}$$ to the hor

Which of the following statement is not true?

A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an ele

A horizontal ray of light is incident on the right angled prism with prism angle $$6^{\circ}$$. If the refractive index

A p-type extrinsic semiconductor is obtained when Germanium is doped with:

Which set of colours will come out in air for a situation shown in figure?

If Z$$_1$$ and Z$$_2$$ are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct

The wavelength of Lyman series of hydrogen atom appears in:

The above figure shows the circuit symbol of a transistor. Select the correct statements given below: (A) The transisto

The de Broglie wavelength associated with an electron, accelerated by a potential difference of 81 V is given by:

The maximum power is dissipated for an ac in a/an:

The maximum kinetic energy of the emitted photoelectrons in photoelectric effect is independent of:

Two particles A and B initially at rest, move towards each other under mutual force of attraction. At an instance when t

A charge $$\mathrm{Q} ~\mu \mathrm{C}$$ is placed at the centre of a cube. The flux coming out from any one of its faces

The viscous drag acting on a metal sphere of diameter $$1 \mathrm{~mm}$$, falling through a fluid of viscosity $$0.8 \ma

If $$\mathrm{R}$$ is the radius of the earth and $$\mathrm{g}$$ is the acceleration due to gravity on the earth surface.

A copper wire of radius $$1 \mathrm{~mm}$$ contains $$10^{22}$$ free electrons per cubic metre. The drift velocity for f

An object is mounted on a wall. Its image of equal size is to be obtained on a parallel wall with the help of a convex l

If a conducting sphere of radius $$\mathrm{R}$$ is charged. Then the electric field at a distance $$\mathrm{r}(\mathrm{r

A block of mass 2 kg is placed on inclined rough surface AC (as shown in figure) of coefficient of friction $$\mu$$. If

A container of volume $$200 \mathrm{~cm}^3$$ contains 0.2 mole of hydrogen gas and 0.3 mole of argon gas. The pressure o

To produce an instantaneous displacement current of $$2 \mathrm{~mA}$$ in the space between the parallel plates of a cap

An emf is generated by an ac generator having 100 turn coil, of loop area $$1 \mathrm{~m}^2$$. The coil rotates at a spe

For very high frequencies, the effective impedance of the circuit (shown in the figure) will be:-

A constant torque of $$100 \mathrm{~N} \mathrm{~m}$$ turns a wheel of moment of inertia $$300 \mathrm{~kg} \mathrm{~m}^2

The emf of a cell having internal resistance $$1 \Omega$$ is balanced against a length of $$330 \mathrm{~cm}$$ on a pote

A $$1 \mathrm{~kg}$$ object strikes a wall with velocity $$1 \mathrm{~m} \mathrm{~s}^{-1}$$ at an angle of $$60^{\circ}$

The angular momentum of an electron moving in an orbit of hydrogen atom is $$\mathrm{1.5\left(\frac{h}{\pi}\right)}$$. T

A particle is executing uniform circular motion with velocity $$\vec{v}$$ and acceleration $$\vec{a}$$. Which of the fol

A simple pendulum oscillating in air has a period of $$\sqrt{3} \mathrm{~s}$$. If it is completely immersed in non-visco