Choose the incorrect statement.

In the electrolytic refining of silver :

In a reaction A and B reacts to form product. The initial rate of reaction was determined using different initial concentration of A and B.

A/molL-1	0.10	0.10	0.20
\(B / mol L ^{-1}\)	0.30	0.10	0.30
\(r_o / mol L ^{-1} s^{-1}\)	\(6.81 \times 10^{-4}\)	\(2.27 \times 10^{-4}\)	\(13.62 \times 10^{-4}\)

What is the initial rate of reaction (\(r_o\)) when critical concentration of A and B is \(0.50\ mol/L\) and \(0.50\ mol/L\) respectively.

Arrange the following in the increasing order of their solubility in n-octane on the basis of their solute-solvent interaction:
(A) KCI
(B) CH3OH
(C) CH3CN
(D) Cyclohexane
Choose the correct answer from the options given below:

Nitriles on reduction with lithium aluminum hydride produce

The pressure of \(\text{H}_2\) required to make the potential of \(\text{H}_2\) electrode zero in pure water at 298 K is
(Given \(\text{E}_{cell} = 0.0 \text{ V}\))

Reaction of Chloroethane with ethanolic ammonia will result in :

At some instant, the current in the circuit shown below is 1 A, and it is decreasing at a rate of \( 10^2 \text{ A/s} \). The value of the potential difference \( (V_P - V_Q) \) at that instant is:

Match List I with List II

List I	List ll
(A) alpha-1-antitrypsin	(I) Resistant to insect attacks
(B) Transgenic mice	(II) Genetically engineered insulin
(C) Eli Lily	(III) Testing safety of polio vaccine
(D) Bt crops	(IV) Treating Emphysema

Choose the correct answer from the options given below:

The coherent monochromatic light beams of intensities \( 4I \) and \( 9I \) are superposed. What will be the maximum and minimum possible intensities?

A person has an initial investment of \(25000\) in an investment plan. After \(2\), years it has grown \(30000\), then the rate of return on his investment is:

Sacred groves in India are related to:

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.
RNA and DNA differ due to presence/absence of oxygen at which carbon of sugar moiety?