Chemistry Question Bank

Four reactions are given below. Which one of them is of zero order? (a) PCl PCl Cl -> (b) 2FeCl SnCl 2FeCl SnCl -> (c) H Cl 2HCl -> (d) N O 2NO O -> Ans. (c) Sol. The order of all photochemical reactions is zero …

Choose the correct answer out of the following choices. Assertion (A) Order and molecularity are different. Reason (R) Order can be determined experimentally and molecularity is the sum of the stoichiometric coefficie…

Choose the correct answer out of the following choices. Assertion (A) Some zero order reactions may have order in fractions. Reason (R) Order cannot be determined from balanced chemical equation.

Which of the following statement(s) is/are correct about order of a reaction? I.The order of a reaction can be a fractional number. II.Order of a reaction is experimentally determined quantity. III.The order of a reac…

Consider the data given below for a hypothetical reactions M N -> Times(s) Rate of reaction (mol L-1 s-1) 4.20 × 10-4 4.20 × 10-4 4.20 × 10-4 4.20 × 10-4 4.18 × 10-4 For the above data, the order of reaction is

Statement I For a complex reaction, order is given by the slowest step of the reaction. Statement II Molecularity of the slowest step is same as the order of the overall reaction. Which of these statement(s) is/are tr…

2NO O 2NO ->

2HI H I -> C. Trimolecula r

NH NO N 2H O -> B. Bimolecular

NH NO N 2H O -> A B C (a) (b) (c) (d)

2NO O 2NO -> C. Trimolecular

2HI H I -> B. Bimolecular

Match the following Columns and choose the correct option from the codes given below. Column I (Type of reaction) Column II (Example) A. Unimolecular

For a reaction, A B -> product, the rate law is given by, 1/2 r k A B . what is the order of the reaction?

For the rate expression rate 3/2 k A B the overall order of a reaction is

In the presence of acid, the initial concentration of cane-sugar was reduced from 0.2 M to 0.1 M in 5 hrs and to 0.05 M in 10 hrs. The reaction must be of

Which of the following statements is false?

For a simple reaction, 2P Q R S, -> molecularity will be

Find the order of the reaction whose rate constant is 2.5 × 10-2 min-1

Identify the incorrect statement.

Decomposition of ammonium nitrite is an example of

The number of reacting species (atoms, ions or molecules) taking part in an elementary reaction, which must collide simultaneously in order to bring about a chemical reaction is called …A… of a reaction Here, A refer to

In a reaction, A + B -> Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled. Rate law for the reacti…

In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (AIPMT 2012)

Activation energy (Ea) and rate constants (k1 and k2) of a chemical reaction at two different temperatures (T1 and T2) are related by: (AIPMT 2012) (a) ln a E k k R T T (b) ln a E k k R T T (c) ln a E …