Chemistry MCQs

Question 1

Normal rainwater has a pH level of

Accepted Answer

5.6

Answer

3.2

Answer

6.3

Answer

8.3

Question 2

Which one of the following is used as preservative for foodstuff ?

Accepted Answer

Sodium Benzoate

Answer

Picric acid

Answer

Glycerine

Answer

Sodium Chloride

Question 3

The acid which fails to liberate carbon dioxide from sodium bicarbonate is :

Accepted Answer

Sulphuric acid

Answer

Acetic acid

Answer

Formic acid

Answer

Carbonic acid

Question 4

Which of these acids is not organic in origin?

Accepted Answer

Sulphuric acid

Answer

Lactic acid

Answer

Citric acid

Answer

Oxalic acid

Question 5

Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants

Accepted Answer

A B C 3 1 2

Answer

A B C3 2 1

Answer

A B C 2 3 1

Answer

A B C 2 1 3

Question 6

Saline soil contains

Accepted Answer

High concentration of salt

Answer

Lot of moisture

Answer

Hard rocks

Answer

None of the above

Question 7

Sour milk contains

Accepted Answer

Lactic acid

Answer

Acetic acid

Answer

Tartaric acid

Answer

Citric acid

Question 8

Basicity of boric acid, H3BO3 is

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 9

Which one is a soluble salt in H2O?

Accepted Answer

CaCl2

Answer

CuS

Answer

Zn(OH)2

Answer

PbCl2