The functional kidney of a frog tadpole is:

$A$ light string fixed at one end to a clamp on the ground passes over a fixed pulley and hangs on the other side. It makes an angle of $30^{\circ}$ with the ground. $A$ monkey of mass $5 \, kg$ climbs up the rope. The clamp can tolerate a vertical force of $40 \, N$ only. The maximum acceleration in the upward direction with which the monkey can climb safely is ............ $m/s^2$ (neglect friction and take $g = 10 \, m/s^2$).

The chemical reaction that involves the roasting process is

For any integer $n \geq 1$,the sum $\sum_{k=1}^n k(k+2)$ is equal to

$\int_2^3 \frac{dx}{x^2-x}$ is equal to

Which of the following statements is true regarding the industrial production of hydrogen gas from water gas $(CO + H_2)$?