pH

Q. What is pH?

1. Molar concentration of protons
2. Negative concentration of hydrogen ions
3. Negative logarithm of molar concentration of protons
4. Logarithm of molar concentration of protons

Q. The pH of a solution is found to be 4.5. What is the nature of the solution?

1. Basic
2. Acidic
3. Difficult to determine
4. Neutral

Q. What are the respective pH values of water, sulphuric acid and ammonium hydroxide?

1. 7, less than 7, more than 7
2. Less than 7, 7 and more than 7.
3. Less than 7, less than 7 and 7.
4. More than 7, more than 7 and less than 7

Q. The pH of two solutions A and B are 11 and 7.7 respectively. What can you say about the nature of these solutions?

1. A is strongly basic and B is weakly basic.
2. A is strongly acidic and B is weakly acidic.
3. Both A and B are strongly acidic.
4. Both A and B are strongly basic.

Q. What is pH?

1. $log{H}^{+}$
2. $log\left[H^{+}\right]$
3. $-log{H}^{+}$
4. $-log\left[H^{+}\right]$

Q. A pH is a measure of the concentration of protons in a solution.

1. True
2. False

Q. ___ has higher pH value. (Dilute HCl or Concentrated HCl)

Q.

If solution X has a pH of 6. Then X is:

1. Strong base

2. Strong acid

3. Weak base

4. Weak acid

Q.

The pH of four solutions A, B, C and D are given below:

A = 1, B = 8.5, C = 13 and D = 5.

Arrange the solutions according to the increasing order of their acidity:

1. C<B<D<A

2. A<B<C<D

3. B<A<C<D

4. C<D<B<A

Q.

Between pH value of 7 to 14, As pH increases:

1. ​ion concentration increases

2. ion concentration decreases

3. pH has no relation with ion concentration.

4. ion concentration remains constant.