$${C_{12}}{H_{22}}{O_{11}} + {H_2}O\buildrel {Enzyme\,A} \over \longrightarrow \mathop {{C_6}{H_{12}}{O_6}}\limits_{Glu\cos e} + \mathop {{C_6}{H_{12}}{O_6}}\limits_{Fructose} $$

$$\mathop {{C_6}{H_{12}}{O_6}}\limits_{Glu\cos e} \buildrel {Enzyme\,B} \over \longrightarrow 2{C_2}{H_5}OH + 2C{O_2}$$

In the above reactions, the enzyme A and enzyme B respectively are :

Choose the correct statement regarding the formation of carbocations A and B given.

Nitrogen can be estimated by Kjeldahl's method for which of the following compound?

Amongst the following, the linear species is :

The correct pair(s) of the ambident nucleophiles is(are)

(A) AgCN/KCN

(B) RCOOAg/RCOOK

(C) AgNO₂/KNO₂

(D) AgI/KI

Given below are two statements :

Statement I : 2-methylbutane on oxidation with KMnO₄ gives 2-methylbutan-2-ol.

Statement II : n-alkanes can be easily oxidised to corresponding alcohols with KMnO₄.

Choose the correct option :

During which of the following processes, does entropy decrease?

(A) Freezing of water to ice at 0$$^\circ$$C

(B) Freezing of water to ice at $$-$$10$$^\circ$$C

(C) N₂(g) + 3H₂(g) $$ \to $$ 2NH₃(g)

(D) Adsorption of CO(g) on lead surface.

(E) Dissolution of NaCl in water

Choose the correct answer from the options given below :

In the above reaction, the structural formula of (A), ''X'' and ''Y'' respectively are :

Primary, secondary and tertiary amines can be separated using:

Match List - I with List - II :

	List - I		List - II
(a)	$$[Co{(N{H_3})_6}][Cr{(CN)_6}]$$	(i)	Linkage isomerism
(b)	$$[Co{(N{H_3})_3}{(N{O_2})_3}]$$	(ii)	Solvate isomerism
(c)	$$[Cr{({H_2}O)_6}C{l_3}$$	(iii)	Co-ordination isomerism
(d)	$$cis - {[CrC{l_2}{(ox)_2}]^{3 - }}$$	(iv)	Optical isomerism

Choose the correct answer from the options given below :

Fructose is an example of :

The common positive oxidation states for an element with atomic number 24, are :

A KCl solution of conductivity 0.14 S m^$$-$$1 shows a resistance of 4.19$$\Omega$$ in a conductivity cell. If the same cell is filled with an HCl solution, the resistance drops to 1.03$$\Omega$$. The conductivity of the HCl solution is ____________ $$\times$$ 10^$$-$$2 S m^$$-$$1. (Round off to the Nearest Integer).

On complete reaction of FeCl₃ with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is __________. (Round off to the Nearest Integer).

Consider the above reaction. The percentage yield of amide product is __________. (Round off to the Nearest Integer).

(Given : Atomic mass : C : 12.0 u, H : 1.0 u, N : 14.0 u, O : 16.0 u, Cl : 35.5 u)

The reaction 2A + B₂ $$ \to $$ 2AB is an elementary reaction.

For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of 3, the rate of the reaction increases by a factor of ____________. (Round off to the Nearest Integer).

Consider the reaction

$$N_{2}O_{4}\left( g\right) \rightleftharpoons 2NO_{2}\left( g\right) $$

The temperature at which K_C = 20.4 and K_P = 600.1, is ____________ K. (Round off to the Nearest Integer). [Assume all gases are ideal and R = 0.0831 L bar K^$$-$$1 mol^$$-$$1]

In the ground state of atomic Fe(Z = 26), the spin-only magnetic moment is ____________ $$\times$$ 10^$$-$$1 BM. (Round off to the Nearest Integer). [Given : $$\sqrt 3 $$ = 1.73, $$\sqrt 2 $$ = 1.41 ]

A 1 molal K₄Fe(CN)₆ solution has a degree of dissociation of 0.4. Its boiling point is equal to that of another solution which contains 18.1 weight percent of a non electrolytic solute A. The molar mass of A is __________ u. (Round off to the Nearest Integer). [Density of water = 1.0 g cm^$$-$$3 ]

The total number of C-C sigma bond/s in mesityl oxide (C₆H₁₀O) is __________. (Round off to the Nearest Integer).