The enzyme ptyalin used for the digestion of food is present in:

The set of all solutions of the inequation $x^2 - 2x + 5 \leq 0$ in $R$ is

Identify the plant shown in the given figure.

$A$ variable plane passes through a fixed point $(1, 2, 3)$. The foot of the perpendicular from the origin to the plane lies on:

Which of the following is an amphoteric hydroxide?

If the volume of a sphere increases at the rate of $2 \pi \text{ cm}^3/\text{s}$, then the rate of increase of its radius (in $\text{cm/s}$), when the volume is $288 \pi \text{ cm}^3$, is