Which of the following is a wheat fruit?

Consider the following reaction: $N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)}$. The rate of this reaction in terms of $N_2$ at $T \ K$ is $-\frac{d[N_2]}{dt} = 0.02 \ mol \ L^{-1} \ s^{-1}$. What is the value of $-\frac{d[H_2]}{dt}$ (in units of $mol \ L^{-1} \ s^{-1}$) at the same temperature?

Helium mixed with oxygen is used in the treatment of

The sum of the fourth powers of the roots of the equation $x^3+x+1=0$ is

Which of the following is a biodegradable polymer?

Power delivered by the $ac$ source of the circuit becomes maximum when