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Answer the following.
Suppose 50 bacteria are placed in a flask containing nutrients, so that they can multiply. A study…
Suppose 50 bacteria are placed in a flask containing nutrients, so that they can multiply. A study at $35^\circ$C gave the following results:
The half life period ($t_{1/2}$) of the reaction is:
| Time (in minutes) | 0 | 15 | 30 | 45 | 60 |
|---|---|---|---|---|---|
| Number of bacteria | 100 | 200 | 400 | 800 | 1600 |
- (a)1500 minutes
- (b)150 minutes
- (c)15 minutes
- (d)$1.5\text{ minutes}$
Answer
Answer
AICorrect option: (c)
Answer: (c) 15 minutes
The number of bacteria doubles every 15 minutes, so $t_{1/2} = 15\text{ min}$ (also $0\cdot693/0\cdot0462\text{ min}^{-1} = 15\text{ min}$).
From ISC 2023 Specimen Chemistry Paper 1, question 18(iii).