Chemistry Test ...

Directions: In the following question, a statement of assertion is given, followed by a corresponding statement of the reason below it. Choose the correct option.

Assertion: Cu²⁺ and Cd²⁺ are separated by first adding KCN solution and then, passing H₂S gas.

Reason: KCN reduces Cu²⁺ to Cu⁺ and forms a complex with it.

Directions: In the following question, a statement of Assertion is given; followed by a corresponding statement of Reason just below it. Out of the statements mark the correct answer as:

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true, but the reason is not the correct explanation of the assertion.

(c) If assertion is true statement, but reason is false.

(d) If both assertion and reason are false.

Assertion: According to transition state theory, for the formation of an activated complex; one of the vibrational degree of freedom is converted into a translational degree of freedom.

Reason: Energy of the activated complex is higher than the energy of reactant molecules.

For a hypothetical reaction 2A + 3B→2C, the rate law expression is = dx/dt k[A] [B]². The order of the reaction is

The plot of ln C_{0 /}C_t against t is a straight line; the order of the reaction is expected to be:

A reaction was found to be in second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled with everything else kept the same, the rate of reaction will

Unit of rate constant of zero order reaction is

The gas-phase reaction of nitric oxide and bromine yields nitrosyl bromide as 2NO(g) + Br₂(g) →2NOBr(g). What is the order of the reaction?

For As₂S₃ sol, the maximum coagulation power is of

Bredig's method can not be used for the preparation of collodial sol of

If C₆H₆(I) + 15/2 O₂(g)→3H₂O(I) + 6CO₂(g); ΔH= – 3264.6 kJ mol^–1, then the energy obtained by burning 3.9 g of benzene in the air is