Question: The higher concentration of which gas in air can cause stiffness of flower buds?
$\mathrm{NO}_{2}$
$\mathrm{CO}_{2}$
$\mathrm{SO}_{2}$
$\mathrm{CO}$
Correct Option: , 3
Solution:
High concentration of $\mathrm{SO}_{2}$ leads to stiffness of flower buds.
