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Q. No.| (i) | The thermal decomposition of HI on a gold surface follows a zero-order reaction. |
| (ii) | Instantaneous rate = \(\operatorname{limit}_{t \rightarrow 0} \frac{\Delta C}{\Delta t}\) |
| (iii) | The rate of 1st order reaction is proportional to the first power of the concentration of the reactant. |
| (iv) | Radioactive reaction follows 1st order kinetics. |
1. (i), (ii)
2. (i), (iii), (iv)
3. (ii), (iii), (iv)
4. (i), (ii), (iii), (iv)
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. log 5 min-1
2. log 1.25 min-1
3. log 2 min-1
4. log 4 min-1
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
1. \(1: 0.301\)
2. \(0.125: 0.602\)
3. \(1: 602\)
4. None of the above
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
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Q. No.
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