If the number of diagonals of a regular polygon is $35$,then the number of sides of the polygon is

Water rises to a height $h$ in a capillary tube. If the length of the capillary tube above the surface of water is made less than $h$,then

For a sample of a perfect gas,when its pressure is changed isothermally from $p_i$ to $p_f$,the entropy change is given by:

In a $\triangle ABC$,the expression $\frac{(a+b+c)(b+c-a)(c+a-b)(a+b-c)}{4b^2c^2}$ is equal to:

Corrosion of iron is essentially an electrochemical phenomenon where the cell reactions are

At $T(K)$,$100 \ L$ of dry oxygen is present in a sealed container. It is subjected to silent electric discharge,till the volumes of oxygen and ozone become equal. What is the volume (in litres) of ozone formed at $T(K)$?