The reagent(s) required for the following conversion are :

The major product of the following reaction is :

Which of the following will not exist in zwitter ionic form at pH=7 ?

Which of the following will most readily give the dehydrohalogenation product ?

The main reduction product of the following compound with NaBH₄ in methanol is :

The increasing order of nitration of the following compounds is :

The correct match between items of List-I and List-II is :

List - I		List - II
(A)	Coloured impurity	(P)	Steam distilation
(B)	Mixture of o-nitrophenol and p-nitrophenol	(Q)	Fractional distilation
(C)	Crude Naphtha	(R)	Charcoal treatment
(d)	Mixture of glycerol and sugars	(S)	Distillation under reduced pressure

Which of the following is the correct structure of Adenosine?

In hydrogen azide (above) the bond orders of bond (I) and (II) are :

An ideal gas undergoes a cyclic process as shown in Figure.


$$\Delta $$U_BC = $$-$$5 kJ mol^-1, q_AB = $$2$$ kJ mol^-1, W_AB = $$-$$5 kJ mol^-1, W_CA = 3 kJ mol^-1. Heat absorbed by the system during process $$CA$$ is :

The IUPAC name of the following compound is :

The decreasing order of bond angles in BF₃, NH₃, PF₃ and I₃^- is :

When an electric currents passed through acidified water, 112 mL of hydrogen gas at N.T.P. was collected at the cathode in 965 seconds. The current passed, in ampere, is :

A sample of $$NaCl{O_3}$$ is converted by heat to $$NaCl$$ with a loss of $$0.16$$ $$g$$ of oxygen. The residue is dissolved in water and precipitated as $$AgCl.$$ The mass of $$AgCl$$ (in $$g$$) obtained will be : (Given : Molar mass of $$AgCl=143.5$$ $$g$$ $$mo{l^{ - 1}}$$)

n$$-$$digit numbers are formed using only three digits 2, 5 and 7. The smallest value of n for which 900 such distinct numbers can be formed, is :

If x₁, x₂, . . ., x_n and $${1 \over {{h_1}}}$$, $${1 \over {{h_2}}}$$, . . . , $${1 \over {{h_n}}}$$ are two A.P..s such that x₃ = h₂ = 8 and x₈ = h₇ = 20, then x₅.h₁₀ equals :

For Na⁺, Mg²⁺, F^- and O^2-; the correct order of increasing ionic radii is :

Which of the following is a Lewis acid?

In the molecular orbital diagram for the molecular ion, N₂⁺, the number of electrons in the $$\sigma $$_2pz molecular orbital is :

Ejection of the photoelectron from metal in the photoelectric experiment can be stopped by applying 0.5 V when the radiation of 250 nm is used. The work function of the metal is :

Ejection of the photoelectron from metal in the photoelectric experiment can be stopped by applying 0.5 V when the radiation of 250 nm is used. The work function of the metal is :

For which of the following reactions, $$\Delta $$H is equal to $$\Delta $$U?

In which of the following reactions, an increase in the volume of the container will favour the formation of products?

The minimum volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution (K_sp of PbCl₂ = 3.2 $$ \times $$ 10^-8 atomic mass of Pb = 207 u ) is :

The minimum volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution (K_sp of PbCl₂ = 3.2 $$ \times $$ 10^-8 atomic mass of Pb = 207 u ) is :