Chemical Kinetics · Question 69

2A B + C It would be a zero order reaction when

1. the rate of reaction is proportional to square of concentration of A
2. the rate of reaction remains same at any concentration of A
3. the rate remains unchanged at any concentration of B and C
4. the rate of reaction doubles if concentration of B is increased to double

When a bio-chemical reaction is carried out in laboratory, outside the human body in absence of enzyme, then rate of reaction obtained is 10-6 times, the activation energy of reaction in the presence of enzyme is

1. 6/RT
2. P is required
3. different from Ea obtained in laboratory
4. can't say anything.

For the reaction; 2N2O5 4NO2 + O2 rate and rate constant are 1.02 10-4 and 3.4 10-5 s-1 respectively, then concentration of N2O5 at that time will be

1. 1.732
2. 3
3. 1.02 10-4
4. 3.4 105

A human body required 0.01 m activity of radioactive substance after 24 hours. Half life of radioactive substance is 6 hours. Then injection of maximum activity of radioactive substance that can be injected is

1. 0.08
2. 0.04
3. 0.16
4. 0.32

For the reaction 6H+ + BrO3- + 5Br- 3Br2 + 3H2O which of the following relation correctly represents the consumption and formation of products.

1. d[Br2]dt = - 35 d[Br-]dt
2. d[Br2]dt = 35 d[Br-]dt
3. d[Br2]dt = - 53 d[Br-]dt
4. d[Br2]dt = 53 d[Br-]dt

A 300 g radioactive sample has a half-life of 3 hours. After 18 hours, the remaining quantity is

1. 4.68 g
2. 2.34 g
3. 3.34 g
4. 9.37 g