GK Questions & Answers on Science: Chemistry Terminology (Set 2)

Questions and Answers on Science: Chemistry Terminology (Set 2) consists of 10 MCQ to make you understand definitions used in various processes and reactions of chemistry which are important for competitive examinations like IAS, PSC, SSC, Railway etc

1. A homogeneous mixture of two or more substances is called:

A. Solution

B. Suspension

C. Colloid

D. Metal

Ans. A

2. A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called:

A. Suspension

B. Colloids

C. Solution

D. Alloy

Ans. B

3. The smallest particle of an element that can take part in a chemical reaction is called:

A. Nucleus

B. Metal

C. Atom

D. Molecule

Ans. C

4. An electrically neutral group of two or more atoms chemically bonded together is called:

A. Molecule

B. Ion

C. Element

D. Compound

Ans. A

5. A positively and negatively charged atom or group of atoms is called:

A. Nucleus

B. Ion

C. Compound

D. Molecule

Ans. B

6. A negatively charged particle found in the atoms of all elements is called:

A. Proton

B. Electron

C. Neutron

D. Ion

Ans. B

7. A positively charged particle found in the atoms of all elements is called:

A. Ion

B. Electron

C. Proton

D. Neutron

Ans. C

8. A neutral particle found in the nucleus of an atom is called:

A. Electron

B. Nucleus

C. Proton

D. Neutron

Ans. D

9. A small positively charged part at the centre of an atom is called:

A. Nucleus

B. Neutron

C. Electron

D. Proton

Ans. A

10. Atoms of the same element having the same atomic number but different mass number are called:

A. Radioactive isotopes

B. Isobars

C. Valence Electrons

D. Isotopes

Ans. D

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