The pH of 0.01 M NaOH (aq) solution will be-

1. 7.01

2. 2

3. 12

4. 9

Which of the following substances has the strongest acid, given their pH values:
A (9.5), B (2.5), C (3.5), and D (5.5)?
1. A
2. C 
3. D 
4. B 

A solution has hydrogen ion concentration 0.0005 M, its pOH is:

1. 8.2798

2. 10.6990

3. 12.7854

4. 13.3344

The pH of an aqueous solution is zero. It can be concluded that the solution is

1. Slightly acidic

2. Strongly acidic

3. Neutral

4. Basic

The pH of the solution obtained by mixing 600 mL of 0.04 M HCl and 400 mL of 0.02 M H₂SO₄ is:
[log 4 = 0.6]

1. 3.4
2. 5.4
3. 1.4
4. 2.4