Thermochemistry UPSC Questions

Chemistry

Thermochemistry MCQ Questions


1.
_____________ stored by molecules can be released as heat.
A.
Copper
B.
Metal
C.
Chemical Energy
D.
Electrical Energy
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ANSWER :
C. Chemical Energy
2.
Whose reactions when a fuel like methane, cooking gas or coal burns in air?
A.
Chemical reactions
B.
Decomposition Reaction
C.
Synthesis Reaction
D.
Electron Reaction
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ANSWER :
A. Chemical reactions
3.
The chemical energy is used to _____________ when a fuel burns in an engine.
A.
Manufacture
B.
Material
C.
Mechanism
D.
Mechanical Work
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ANSWER :
D. Mechanical Work
4.
The study of these energy transformations forms the subject matter of
A.
Exosphere
B.
Thermodynamics
C.
Atmosphere
D.
Thermosphere
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ANSWER :
B. Thermodynamics
5.
What are the laws of thermodynamics that deal with energy changes involving a large number of molecules?
A.
Macroscopic Systems
B.
Manufacture Systems
C.
Material Layer
D.
Carbon Layer
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ANSWER :
A. Macroscopic Systems
6.
A ______________ of molecules rather than microscopic systems containing a few molecules.
A.
Centimetres
B.
Infinity
C.
Small Number
D.
Large Number
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ANSWER :
D. Large Number