Matter and its Nature NEET Questions

Physical Chemistry - Some Basic Concepts of Chemistry

Matter and its Nature MCQ Questions


1.
Which of the following statements about the three states of matter is INCORRECT?
A.
Gases have neither definite shape nor definite volume
B.
Liquids have definite shape but no definite volume
C.
In gases, particles are far apart with rapid movement
D.
Solids have definite shape and definite volume
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ANSWER :
B. Liquids have definite shape but no definite volume
2.
In which state of matter are the constituent particles held closest to each other in an orderly fashion with minimal freedom of movement?
A.
Solid
B.
Gas
C.
Plasma
D.
Liquid
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ANSWER :
A. Solid
3.
On heating, the conversion sequence of states of matter follows:
A.
Solid → Liquid → Gas
B.
Gas → Liquid → Solid
C.
Liquid → Solid → Gas
D.
Solid → Gas → Liquid
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ANSWER :
A. Solid → Liquid → Gas
4.
Which of the following is a homogeneous mixture?
A.
Sugar solution in water
B.
Grains and pulses with stones
C.
Mixture of salt and sugar
D.
Sand and iron filings
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ANSWER :
A. Sugar solution in water
5.
Which of the following is NOT a pure substance?
A.
Distilled water
B.
Brass
C.
Copper
D.
Glucose
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ANSWER :
B. Brass
6.
Which of the following correctly distinguishes a compound from a mixture?
A.
Compounds can be separated by physical methods; mixtures cannot
B.
Both compounds and mixtures have fixed compositions
C.
Compounds have fixed composition and can be separated only by chemical methods
D.
Compounds have variable composition; mixtures have fixed composition
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ANSWER :
C. Compounds have fixed composition and can be separated only by chemical methods