States of Matte...

In three beakers labeled as (A), (B) and (C), $$100mL$$ of water, $$100mL$$ of $$1M$$ solution of glucose in water and $$100mL$$ of $$0.5M$$ solution of glucose in water are taken respectively and kept at same temperature.
Which of the following statements is correct?

A mixture in which the mole ratio of $$H_{2}$$ and $$O_{2}$$ is $$2 : 1$$ is used to prepare water by the reaction,
$$2H_{2(g)} + O_{2(g)} \rightarrow 2H_{2}O_{(g)}$$
The total pressure in the container is $$0.8\ atm$$ at $$20^{\circ}C$$ before the reaction. The final pressure at $$120^{\circ}C$$ after reaction is: (assuming $$80$$% yield of water).

The certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half of its original value the pressure becomes twice that of the initial value at a constant temperature. This happens because:

The main reason for deviation of gases from ideal behaviour is few assumptions of kinetic theory. These are
(i) there is no force of attraction between the molecules of a gas
(ii) volume of the molecules of a gas is negligibly small in comparison to the volume of the gas
(iii) Particles of a gas are always in constant random motion.

When a non volatile solute is added to a pure solvent, the :

If $$P_o$$ and $$P_s$$ are the vapour pressure of solvent and its solution respectively. $$x_1$$ and $$x_2$$ are the mole fraction of solvent and solute respectively then:

5 litre of $$N_2$$ under a pressure of 2 atm, 2 litre of $$O_2$$ at 5.5 atm and 3 litre of $$CO_2$$ at 5 atm are mixed. The resultant volume of the mixture is 15 litre. Calculate the total pressure of the mixture and partial pressure of each constituent.

A 5 L vessel contains 1.4 g of nitrogen gas $$N_2$$. When heated to 1800 K, 30% of molecules are dissociated into atoms. Calculate the pressure of the gas at 1800 K. [Mol. mass of $$N_2 = 28 mol^{-1}$$, R = 0.0821 L atm $$K^{-1} mol^{-1}$$

The motion of the ball in the vessel is

What is the composition of last deoplet of liquid remaining in equilibrium with vapour?