MCQs on Hydrogen Ion Concentration pH Scale and Buffer Solution

MCQs on Hydrogen Ion Concentration pH Scale and Buffer Solution

1. Range of pH scale is

1. 7 to 10
2. 0 to 10
3. 0 to 14
4. 7 to 14

Answer: (c)

2. Level of pH found in antacid solution

1. ≤ 6.5
2. ≥ 7.0
3. > 10
4. > 14

Answer: (b)

3. Three unknown solutions are given with pH value of 6, 8 & 9.5 respectively. Which solution will contain the maximum OH^– ion?

1. Solution sample-1
2. Solution sample-2
3. Solution sample-3
4. Data are insufficient

Answer: (c)

4. pH of neutral salt is

1. 7
2. <7
3. >7
4. 0

Answer: (a)

5. Ammonium sulphate salt is

1. basic salt
2. acidic salt
3. neutral salt
4. complex salt

Answer: (a)

6. When sulphuric acid reacts with eggshell it produces

1. hydrogen gas
2. nitrogen gas
3. carbon monoxide
4. carbon dioxide gas

Answer: (d)

7. In the Chlor-alkali process, the byproduct gases are

1. hydrogen only
2. hydrogen and oxygen gas
3. hydrogen and chlorine gas
4. chlorine and nitrogen gas

Answer: (c)

8. The following salt is not hygroscopic in nature

1. NaCl
2. MgCl
3. CaCl₂
4. KCl

Answer: (a)

9. When more and more water is diluted with acids its H⁺ ion concentration will

1. increase
2. decrease
3. remains the same
4. depends on the type of acids

Answer: (b)

10. When acids react with metal oxide it produces

1. water and salt
2. salts and hydrogen gas
3. salts only
4. no reaction takes place

Answer: (a)