Which one of the following pairs of isomers is an example of metamerism?

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

The major product (P) in the following reaction is :

A solution is 0.1 M in Cl^$$-$$ and 0.001 M in CrO$$_4^{2 - }$$. Solid AgNO₃ is gradually added to it. Assuming that the addition does not change in volume and K_sp(AgCl) = 1.7 $$\times$$ 10^$$-$$10 M² and K_sp(Ag₂CrO₄) = 1.9 $$\times$$ 10^$$-$$12 M³.

Select correct statement from the following :

Outermost electronic configuration of a group 13 element, E, is 4s², 4p¹. The electronic configuration of an element of p-block period-five placed diagonally to element, E is :

Metallic sodium does not react normally with :

Spin only magnetic moment of an octahedral complex of Fe²⁺ in the presence of a strong field ligand in BM is :

Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?

Which one of the following statements is not true about enzymes?

The hybridisations of the atomic orbitals of nitrogen in NO$$_2^ - $$, NO$$_2^ + $$ and NH$$_4^ + $$ respectively are.

Benzene on nitration gives nitrobenzene in presence of HNO₃ and H₂SO₄ mixture, where :

Consider the above reaction, compound B is :

Major product P of above reaction, is :

Cu²⁺ salt reacts with potassium iodide to give

In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of :

The correct order of their reactivity towards hydrolysis at room temperature is :

For a given chemical reaction A $$\to$$ B at 300 K the free energy change is $$-$$49.4 kJ mol^$$-$$1 and the enthalpy of reaction is 51.4 kJ mol^$$-$$1. The entropy change of the reaction is _____________ JK^$$-$$1 mol^$$-$$1.

The wavelength of electrons accelerated from rest through a potential difference of 40 kV is x $$\times$$ 10^$$-$$12 m. The value of x is ___________. (Nearest integer)

Give : Mass of electron = 9.1 $$\times$$ 10^$$-$$31 kg

Charge on an electron = 1.6 $$\times$$ 10^$$-$$19 C

Planck's constant = 6.63 $$\times$$ 10^$$-$$34 Js

The vapour pressures of A and B at 25$$^\circ$$C are 90 mm Hg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is x $$\times$$ 10^$$-$$1. The value of x is ___________. (Nearest integer)

4g equimolar mixture of NaOH and Na₂CO₃ contains x g of NaOH and y g of Na₂CO₃. The value of x is ____________ g. (Nearest integer)

When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ______________. (Nearest integer)

[Atomic mass : Silver = 108, Bromine = 80]

$$PC{l_5}(g) \to PC{l_3}(g) + C{l_2}(g)$$

In the above first order reaction the concentration of PCl₅ reduces from initial concentration 50 mol L^$$-$$1 to 10 mol L^$$-$$1 in 120 minutes at 300 K. The rate constant for the reaction at 300 K is x $$\times$$ 10^$$-$$2 min^$$-$$1. The value of x is __________. [Given log5 = 0.6989]

An aqueous solution of NiCl₂ was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)₆]^2$$-$$. The total change in number of unpaired electrons on metal centre is _______________.

Potassium chlorate is prepared by electrolysis of KCl in basic solution as shown by following equation.

6OH^$$-$$ + Cl^$$-$$ $$\to$$ ClO₃^$$-$$ + 3H₂O + 6e^$$-$$

A current of xA has to be passed for 10h to produce 10.0g of potassium chlorate. The value of x is ____________. (Nearest integer)

(Molar mass of KClO₃ = 122.6 g mol^$$-$$1, F = 96500 C)