Available solutions are 1L of 0.1 M NaCl and 2L of 0.2 M CaCl₂. Using only these two solutions what maximum volume of a solution can be prepared having [Cl^–] = 0.34M exactly. Both electrolytes are strong

(1) 2.5 L

(2) 2.4 L

(3) 2.3 L

(4) None of these

Consider equimolal aqueous solutions of NaHSO₄ and NaCl with $∆$T_b and $∆T\text{'}$_b as their respective boiling point elevations. The value of $\underset{x\to 0}{\lim }\frac{\Delta T_b}{\Delta T_b^{\text{'}}}$ will be :

(1) 1

(2) 1.5

(3) 3.5

(4) 3

The vapor pressures of benzene, toluene and a xylene are 75 Torr, 22 Torr and 10 Torr at 20°C. Which of the following is not a possible value of the vapor pressure of an equimolar binary/ternary solution of these at 20°C ? Assume all form ideal solution with each other.

(1) 48$\frac{1}{2}$

(2) 16

(3) $35\frac{2}{3}$

(4) 53$\frac{1}{2}$

3.24 g of Hg(NO₃)₂ (molar mass = 324) dissolved in 1000 g of water constitutes a solution having a freezing point of –0.0558°C while 21.68 g of HgCl₂ (molar mass = 271) in 2000 g of water constitutes a solution with a freezing point of –0.0744°C. The K_f for water is 1.86 $\frac{\text{K\hspace{0.17em}– Kg}}{\text{Mol}}$. About the state of ionization of these two solids in water it can be inferred that:

(1) Hg(NO₃)₂ and HgCl₂ both are completely ionized

(2) Hg(NO₃)₂ is fully ionized but HgCl₂ is fully unionized

(3) Hg(NO₃)₂ and HgCl₂ both are completely unionized

(4) Hg(NO₃)₂ is fully unionized but HgCl₂ is fully ionized  

15 g of methyl alcohol is dissolved in 35 g of water. The weight percentage of methyl alcohol in solution is

1. 30%

2. 50%

3. 70%

4. 75%

The seawater sample contains 5.8 × 10^–3 g of dissolved oxygen per kilogram of the sample. The concentration of oxygen in parts per million is-

1. 5.8 ppm

2. 58.5 ppm

3. 0.58 ppm

4. 0.05 ppm

A 500 gm toothpaste sample has 0.2 g fluoride concentration. The concentration of fluoride ions in terms of ppm level is

(1) 250 ppm

(2) 200 ppm

(3) 400 ppm

(4) 1000 ppm

Normality of a solution containing 9.8 g of H₂SO₄ in 250 cm³ of the solution is

[MP PMT 1995, 2003; CMC Vellore 1991; JIPMER 1991]

(1) 0.8 N

(2) 1 N

(3) 0.08 N

(4) 1.8 N

Amount of NaOH present in 200 ml of 0.5 N solution is 

(1) 40 g

(2) 4 g

(3) 0.4 g

(4) 4.4 g

50 ml of $10N{H}_{2}S{O}_4,25ml$ of 12 N HCl and 40 ml of $5NHN{O}_3$ were mixed together and the volume of the mixture was made 1000 ml by adding water. The normality of the resulting solution will be 

(1) 1 N

(2) 2 N

(3) 3 N

(4) 4 N