The relationship between temperature and the variance in reaction rate is:

1.		2.
3.		4.

Half-life is independent of the concentration of a reactant. After 10 minutes, the volume of N₂ gas is 10 L and after complete reaction, it is 50 L. Hence, the rate constant is:

1. $\frac{2.303}{10}$log 5 min^-1

2. $\frac{2.303}{10}$ log 1.25 min^-1

3. $\frac{2.303}{10}$ log 2 min^-1

4. $\frac{2.303}{10}$ log 4 min^-1

Consider the following graph

Choose the incorrect statement(s)

1.  Reaction is exothermic forward direction i.e., $∆$H = -ve

2.  Activation energy for forward reaction is x - y

3.  Using catalyst energy will decrease $∆$H value of the reaction

4.  All of these

The half-life for radioactive decay of ¹⁴C is 5730 years. A wood sample contains only 80% of the ¹⁴C. The age of the wood sample would be-

1. 1898 years

2. 1765 years

3. 1931 years

4. 1860 years

Sucrose hydrolysis in an acidic solution into glucose and fructose follows the first-order rate law with a half-life of 3.33 h at 25°C. After 9 h, the fraction of sucrose remaining is f. The value of  \(log(\frac{1}{f})\) is A×10^-2 . The value of A is:
(Rounded off to the nearest integer) [Assume : ln 10 = 2.303, ln 2 = 0.693]
1. 78
2. 81
3. 85
4. 75

Consider the reaction, 2A + B → Products.
When concentration of B alone was doubled, the half-life did not change. When the concentration of A alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is:

1. L mol^–1 s^–1

2. no unit

3. mol L^–1s^–1

4. s^–1