What is the product obtained in the following reaction?

When an electric current is passed through acidulated water,$112 \ mL$ of hydrogen gas at $N.T.P.$ is collected at the cathode in $965 \ seconds$. The current passed,in amperes,is:

$\operatorname{cosec} 15^{\circ} + \sec 15^{\circ}$ is equal to :

Which of the following vessels in a rabbit starts with capillaries and ends in capillaries?

$A$ disc has mass $m$ and radius $R$. How much tangential force should be applied to the rim of the disc so as to rotate it with angular velocity $\omega$ in time $t$?

$y+x^2=\frac{dy}{dx}$ has the solution