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Chemistry - 9 Chapter - 10
Chemical Energetics
Test - 1
1.
Define Thermo Chemistry?
a) Thermo Chemistry is that branch of chemistry in which we study the heat changes during a chemical reaction.
b) Thermo Chemistry is that branch of chemistry in which we study the electric changes during a chemical reaction.
2.
Thermo Chemistry is that branch of chemistry in which we study the heat absorption only during a chemical reaction.
a) False
b) True
3.
A physical or a chemical change is almost always accompanied with either absorption or evolution of ______?
a) Mist
b) Moisture
c) Smoke
d) Heat
4.
Thermo Chemistry is that branch of chemistry in which we study the heat changes during a _______reaction.
a) Physical and chemical
b) Chemical
c) Physical
5.
Define Exothermic reaction Exothermic reaction?
a) Exothermic reactions are those chemical reactions during which heat is evolved
b) Exothermic reactions are those chemical reactions during which no heat is evolved
6.
Endothermic reactions are those chemical reactions during which heat is:
a) Evolved
b) Absorbed
7.
Define Endothermic reactions?
a) ndothermic reactions are those chemical reactions during which heat is absorbed.
b) ndothermic reactions are those chemical reactions during which heat is given out.
8.
Exothermic reactions are those chemical reactions during which heat is:
a) Absorbed
b) Evolved
9.
Container in which an exothermic reaction is carried out gets
a) Cold
b) Hot
c) No effect
10.
Container in which an exothermic reaction is carried out gets cold.
a) True
b) False
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