List of top Physics Questions on States of matter

The elastic energy stored per unit volume in a stretched wire is: \[ \left( Y = \text{Young's modulus of the material of the wire}; \quad S = \text{stress acting on the wire} \right) \]
Convert 72 degrees Celsius to Fahrenheit.
What is the oxidation state of Fe in \( \mathrm{Fe_3O_4} \)?
Match Column - I and Column - II and choose the correct match from the given choices. 
Column - I

Column - II

(A)Root mean square speed of gas molecules(P)\(\frac{1}{3}\) nmv-2
(B)The pressure exerted by the ideal gas(Q)\(\sqrt{\frac{3\,RT}{M}}\)
(C) The average kinetic energy of a molecule(R)\(\frac{5}{2}RT\)
(D)The total internal energy of 1 mole of a diatomic gas(S)\(\frac{3}{2}kBT\)
If pressure of CO\(_2\) (real gas) in a container is given by \( P = \frac{RT}{2v-b} - \frac{a}{4v^2} \), then mass of the gas in the container is: