GK Questions & Answers on Science: Chemistry Terminology (Set 5)

Questions and Answers on Science: Chemistry Terminology (Set 5) consists of 10 MCQ to learn and understand various definitions used in chemical reactions & phenomena’s which are important for various competitive examinations like IAS, PSC, SSC, Railway etc.

1. A reaction that has both oxidation and reduction, is called:

A. Redox reaction

B. Decomposition reaction

C. Synthesis reaction

D. Double displacement reaction

Ans. A

2. The solid that gets dissolved in a solution is called:

A. Solvent

B. Sol

C. Solute

D. None of the above

Ans. C

3. When a solid can change directly into gas, it is called:

A. Boiling

B. Condensation

C. Sublimation

D. Evaporation

Ans. C

4. The measurement of how much molecules on a liquid tend to stick to each other is called:

A. Suspension

B. Synthesis

C. Surface Tension

D. Transition State

Ans. C

5. The elements in group 17 of a periodic table are called:

A. Halogens

B. Zerovalent

C. Transition elements

D. Actinide series

Ans. A

6. When two substances don’t dissolve they are called:

A. Solute

B. Solvent

C. Immiscible

D. Solution

Ans. C

7. A substance that slows down chemical reaction is called:

A. Inhibitor

B. Ketone

C. Kelvin

D. Nuclear reaction

Ans. A

8. The number of moles of solute per kilogram of solvent in a solution is called:

A. Molar mass

B. Molar Volume

C. Molality

D. Molarity

Ans. C

9. When the concentration of acid is determined by neutralising it, is called:

A. Transition state

B. Theoretical yield

C. Titration

D. Thermodynamics

Ans. A

10. The outermost electrons in an atom are called:

A. Valence electrons

B. Valency

C. Neutrons

D. Protons

Ans. A

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