GK Questions & Answers on Science: Chemistry Terminology (Set 1)

Questions and Answers on Science: Chemistry Terminology (Set 1) consists of 10 MCQ to make you understand various terms used in chemistry and important for various competitive examinations.................

1. The spreading out and mixing of a substance with another substance due to motion of its particles is called:

A. Diffusion

B. Vaporisation

C. Condensation

D. Heating

Ans. A

2. The process by which solid substance changes into liquid is called:

A. Boiling

B. Diffusion

C. Melting

D. Condensation

Ans. C

3. The process in which a liquid substance change into gas rapidly on heating is called:

A. Vaporisation

B. Boiling

C. Freezing

D. Condensation

Ans. B

4. What is the process called in which gas is changed into liquid by cooling?

A. Condensation

B. Vaporisation

C. Melting

D. Boiling

Ans. A

5. The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called:

A. Diffusion

B. Condensation

C. Vaporisation

D. Sublimation

Ans. D

6. A substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electric energy is called:

A. Element

B. Atom

C. Nucleus

D. Matter

Ans. A

7. What is an element that is malleable and ductile, and conducts electricity called?

A. Non-metals

B. Metals

C. Metalloids

D. Ions

Ans. B

8. An elements that is neither malleable nor ductile, and does not conduct electricity is called:

A. Solution

B. Alloy

C. Mixture

D. Colloids

Ans. C

9. A substance made up of two or more elements chemically combined in a fixed proportion by mass is called:

A. Mixture

B. Compound

C. Solution

D. Suspension

Ans. B

10. A homogeneous mixture of two or more substances in called:

A. Solution

B. Suspension

C. Colloid

D. Metal

Ans. A