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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