Discuss briefly the similarities between beryllium and aluminium.

Alkaline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergo metal displacement reaction with AgNO₃ solution to form compound (D).

Explain the important common features of Group 2 elements.

Describe briefly the biological Importance of Calcium and magnesium.

Bring out the simularities between lithium and magnesium.

How is sodium hydroxide prepared commercially from brine solution?

An element A belonging to group 2 and period 2 reacts with chlorine at an elevated temperature to give compound (B) compound B combines with LiAIH₄ to form compound (C). Which is an hydride identify A, B, and C?

What is the cause for the distinctive behaviour of lithium? Compare the properties of lithium with other elements of the group.

Describe the biological importance of sodium and potassium.

Derive the values of critical constants in terms of van der Waals constants.

Of two samples of nitrogen gas, sample A contains 1.5 moles of nitrogen in a vessel of volume of 37.6 dm³ at 298K, and the sample B is in a vessel of volume 16.5 dm³ at 298K. Calculate the number of moles in sample B.

A combustible gas is stored in a metal tank at a pressure of 2.98 atm at 25°C. The tank can withstand a maximum pressure of 12 atm after which it will explode. The building in which the tank has been stored catches fire. Now predict whether the tank will blow up first or start melting? (Melting point of the metal = 1100 K).

Defined the following terms.

Give a detailed account on compressibility factor

Find the pressure of neon gas having density 0.9 gm lit^-1 at 350 K temperature.

Vanderwaal's constant for gas are a = 3.67 atm lit² mo1^-2 b = 0.0408 lit mol^-1. Find the critical temperature and critical pressure of the gas.

If a scuba diver takes a breath at the surface filling his lungs with 5.82 dm³ of air what volume will the air in his lungs occupy when he drives to a depth where the pressure is 1.92 atm. (assume temperature is constant and the pressure at the surface is exactly)

In an experiment of verification of Charle's law, the following are the set of readings taken by a student.

Experiment	Volume (L)	Temperature (0C)
1	1.54	20
2	1.65	40
3	1.95	100
4	2.07	120

What is the average value of the constant of proportionality ?

What are the observations that you get from the plot of Z vs P. (PV / RT vs P) for real gases?

Explain about Andrew's experimental isotherms of CO₂ gas.