Question

The temperature coefficient for reaction in which food deteriorates is 2. Then food deteriorates ...... times as rapidly at $25^{o}C$ as it does at $5^{o}C$ .

• A. Two
• B. Four
• C. Six
• D. Twenty

Answer 1

Answer: (B)

Four

Answer 2

$\frac{K_{t} + 10}{K_{t}} = \frac{r_{t} + 10}{r_{t}} = 2$.

For an increase of temperature to $20{^\circ}C$ i.e. 2 times, the rate increase by $2^{2}$times, i.e. 4 times.