The average emf induced in a coil is 2 V when current is changed in 0.4 s.
(A) from 5 A to 2 A and the self-inductance of the coil is 0.266 mH
(B) from 4 A to 4 A in the opposite direction, the self-inductance of the coil is 0.10 mH

Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of \(3 \Omega\) is connected in series with the smaller resistance, then the null point shifts to 40 cm. The value of the smaller resistance is:

If a p-n junction is forward biased, then what is the direction of diffusion and drift current across the junction?

As the mass number A increases, which of the following quantities related to a nucleus does not change?

Match List-I with List-II

List-I	List-II
(A) Low mass number nuclei	(I) Medium penetrating power
(B) Electron microscope	(II) Nuclear reactor
(C) Beta decay	(III) Diffracted electron
(D) \( {}^{235}_{92}\text{U} \)	(IV) Fusion

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Two positive point charges of \(q_1=0.2 \mu C\) and \(q_2=0.01 \mu C\) are placed \(r_i=10 cm\) apart. The work done in reducing the distance to \(r_f=5 cm\) will be

Which is quantised in Bohr's atomic model ?

When \(1.5\) g of a non-volatile solute is dissolved in \(30\) g of a solvent, the boiling point of the solvent is raised by \(2\ K\). Calculate the molar mass of the solute, given that \(K_b\) for the solvent is \(1.85\ K\ kg\ mol^{-1}\).

Answer the question on the basis of passage given below:
Proteins are the polymers of about twenty different a-amino acids which are linked by peptide bonds. Proteins perform various structural and dynamic functions in the organisms. Proteins which contain only a-amino acids are called simple proteins. The secondary or tertiary structure of proteins get disturbed on change of pH or temperature and they are not able to perform their functions. This is called denaturation of proteins. Enzymes are biocatalysts which speed up the reactions in biosystems. Vitamins are accessory food factors required in the diet. They are classified as fat soluble (A, D, E and K) and water soluble (B group and C). Deficiency of vitamins leads to many diseases. Nucleic acids are the polymers of nucleotides which in turn consist of a base, a pentose sugar and phosphate moiety. Nucleic acids are responsible for the transfer of characters from parents to offsprings. There are two types of nucleic acids DNA and RNA. DNA contains a five carbon sugar molecule called 2-deoxyribose whereas RNA contains ribose.
Which of the following vitamin cannot be stored in our body?

Match List-I with List-II

List-I (Terms)	List-II (Features)
(A) Bioprocess engineering	(I) Use of bio resources without proper authorisation
(B) Somatic hybridization	(II) Correction of gene defect
(C) Gene Therapy	(III) Fusion of protoplasts from two different organisms
(D) Biopiracy	(IV) Maintenance of sterile ambiance for microbial growth

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What is the formula for the Tetraammineaquachloridocobalt (III) chloride coordination compound?

Match List I with List - II. -

List - l	List - II
(A) Colostrum	(l) T-lymphocyte
(B) Histamine	(II) Preformed antibodies
(C) Passive immunisation	(III) Yellowish fluid
(D) Cell-mediated immunity	(IV) Mast cell

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If x = a sin t and y = a \(\left(\cos t+\log \tan \frac{t}{2}\right)\) then \(\frac{d^2 y}{d x^2}\) is: