The molarity of a solution containing 5.85 g of NaCl(s) per 500 mL of solution is -

1. 4 mol L^–1

2. 20 mol L^–1

3. 0.2 mol L^–1

4. 2 mol L^–1

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

If the concentration of glucose  (C₆H₁₂O₆)  in the blood is 0.9 g L^–1, then the molarity of glucose in the blood is: 
1. 5 M
2. 50 M
3. 0.005 M
4. 0.05 M

The molality of a solution containing 18.25 g of HCl gas in 500 g of water is -

1. $12.044\times {10}^{20}$ molecules

2. $6.022\times {10}^{23}$ molecules

3. $1\times {10}^{23}$ molecules

4. $12.044\times {10}^{23}$ molecules

The mass percent of carbon in carbon dioxide is: 

Sulphuric acid reacts with sodium hydroxide as follows

${\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{SO}}_4+2{\mathrm{H}}_2\mathrm{O}$

When 1L of 0.1 M sulphuric acid solution is allowed to react with 1 L of 0.1 M sodium hydroxide solution, the amount of sodium sulphate formed and its molarity in the solution obtained are respectively-

1. 0.1 M, 7.10 g

2. 7.10 g, 0.025 M

3. 0.025 M, 3.55 g

4. 3.55 g, 0.25 M

Which of the following solutions have the same concentration? 

1. (a), (b)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Unitless terms among the following are: