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 .........................

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