What is the correct sequence of active masses in increasing order in gaseous mixture, containing one gram per litre of each of the following?

I. NH₃

II. N₂

III. H₂

IV. O₂

Select the correct answer using the codes given below:

1. III, I, IV, II

2. III, IV, II, I

3. II, I, IV, III

4. IV, II, I, III

When a saturated solution of sodium chloride is heated, it 

(1) becomes remains saturated 

(2) becomes unsaturated

(3) becomes supersaturated 

(4) achieves equilibrium state 

The graph among the following that represents Henry's Law is -

1.   

2.

3.

4.  

ln liquid ${\mathrm{CCl}}_4$ which of the following has maximum solubility?

(1) l₂

(2) Br₂

(3) NaCl

(4) Cl₂

Which of the following represents a metastable system?

1. an unsaturated solution 

2. a dilute solution

3. a saturated solution 

4. a supersaturated solution 

When a non-volatile solute is dissolved in a solvent. The relative lowering of vapor pressure is equal to 

(1) Molar fraction of solute 

(2) Molar fraction of solvent 

(3) Concentration of the solute in grams per liter 

(4) Concentration of the solute in gram per 100 mL.

Van't Hoff factor is 

(1) More than one in case of association 

(2) Less than one in case of dissociation 

(3) Equal to $\frac{normal molecular mass}{observed molecular mass}$
$$

(4) Equal to $\frac{observed molecular mass}{normal molecular mass}$

The solubility of a gas in a liquid increase with 

(1) Increase of temperature

(2) Amount of liquid taken

(3) Decrease in temperature

(4) Reduction of gas pressure

Which of the following solution would exhibit abnormal colligative properties?

(1) 1 M glucose

(2) 0.1 M NaCl

(3) 0.1 M sucrose 

(4) 10 gram glass powder in water 

The number of moles of sodium hydroxide present in 2.5 L and 0.5 M aqueous solution will be

(1) 1.25

(2) 0.5

(3) 12.5

(4) 5