Question

In plants and animals, the ratio of $C^{14}$ to $C^{12}$ is ________ .

• A. ${10}^{-12}:1$
• B. $1:{10}^{-12}$
• C. $1:{10}^{-10}$
• D. ${10}^{-10}:1$

Answer 1

The correct option is A ${10}^{-12}:1$

In plants and animals, ratio of $C^{14}$ to $C^{12}$ is $1:{10}^{12}$

$\frac{1}{{10}^{12}}=\frac{{10}^{-12}}{1}={10}^{-12}:1$

So, (A) is correct option.