Get Started
Login
Register Now
Back to Home

Chemistry

Showing 21-30 of 50 results

1. When water is added into acid, the temperature

(A) Decreases
(B) Coagulation
(C) Rises
(D) None of these

2. Reaction of alcohol with a arboxylic acid is known as

(A) Substitution Reaction B
(B) Addition Reaction
(C) Esterification
(D) Hydrogenation
Show Answer Hide Answer

3. The acid used in tanning and printing industry is

(A) Tannic acid
(B) Benzoic acid
(C) Hydrochloric acid
(D) Phosphoric acid
Show Answer Hide Answer

4. The element common to all acids is

(A) carbon
(B) hydrogen
(C) oxygen
(D) sulphur
Show Answer Hide Answer

5. The acid which fumigates when exposed to air is

(A) Sulphuric acid
(B) Hydrochloric acid
(C) Lactic acid
(D) Nitric acid
Show Answer Hide Answer

6. Which of the following is not a bleaching agent?

(A) Sulphur dioxide
(B) Carbon dioxide
(C) Sodium hypochlorite
(D) Chlorine
Show Answer Hide Answer

7. Lamp black is a soft allotrope of which element

(A) Sulphur
(B) Nitrogen
(C) Lead
(D) Carbon

8. Which element is excreted through human sweat?

(A) sulphur
(B) nitrogen
(C) oxygen
(D) lead
Show Answer Hide Answer

9. Solar cells are usually made from?

(A) Sulphur
(B) Silicon
(C) Sodium
(D) Strontium
Show Answer Hide Answer

10. What is laughing gas?

(A) Carbon dioxide
(B) Sulphur dioxide
(C) Hydrogen peroxide
(D) Nitrous oxide
Show Answer Hide Answer

Start Your Journey!

Copyright © 2025 Smart Brain Technologies All Rights Reserved