In leaves of $C_4$ plants,malic acid synthesis during $CO_2$ fixation occurs in :-

$A$ stunt man jumps his car over a crater as shown (neglect air resistance).

The pressure and density of a given mass of a diatomic gas $\left(\gamma = \frac{7}{5}\right)$ change adiabatically from $(P, d)$ to $(P^{\prime}, d^{\prime})$. If $\frac{d^{\prime}}{d} = 32$,then $\frac{P^{\prime}}{P}$ is $(\gamma = \text{ratio of specific heats})$

${ }^{234}Th_{90}$ gets converted to ${ }^{206}Pb_{82}$ through a series of radioactive decay processes. The number of alpha and beta particles lost in this transformation respectively,are

The decomposition of $H_2O_2$ can be prevented by the addition of which of the following?

Oxyacids of chlorine show similarity in: