Volume, Density and Specific Gravity NDA Questions

NDA Physics

Volume, Density and Specific Gravity MCQ Questions


13.
How is specific gravity measured experimentally, and what are its practical applications?
A.
Specific gravity is measured using a thermometer, and it has applications in determining temperature.
B.
Specific gravity is measured using a hydrometer or pycnometer, and it has applications in assessing material quality, purity, and concentration.
C.
Specific gravity is measured using a balance, and it has applications in determining mass.
D.
Specific gravity is measured using a ruler, and it has applications in measuring length.
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ANSWER :
B. Specific gravity is measured using a hydrometer or pycnometer, and it has applications in assessing material quality, purity, and concentration.
14.
How does the density of a substance affect its behavior when mixed with other substances?
A.
Substances with higher densities float on top when mixed with others.
B.
Substances with lower densities tend to settle at the bottom when mixed with others.
C.
Substances with higher densities tend to settle at the bottom, while those with lower densities float on top when mixed with others.
D.
Substances with lower densities float on top when mixed with others.
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ANSWER :
C. Substances with higher densities tend to settle at the bottom, while those with lower densities float on top when mixed with others.
15.
How does the density of a substance affect its behavior when mixed with other substances?
A.
Substances with higher densities float on top when mixed with others.
B.
Substances with lower densities tend to settle at the bottom when mixed with others.
C.
Substances with higher densities tend to settle at the bottom, while those with lower densities float on top when mixed with others.
D.
Substances with lower densities float on top when mixed with others.
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ANSWER :
C. Substances with higher densities tend to settle at the bottom, while those with lower densities float on top when mixed with others.
16.
Which of the following statements about density is true?
A.
Density is a measure of the space occupied by an object
B.
Density remains constant regardless of the amount of substance
C.
Density is a measure of the force exerted by an object due to gravity
D.
Density varies with the size of an object
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ANSWER :
B. Density remains constant regardless of the amount of substance
17.
Which of the following statements about volume is correct?
A.
Volume is the force exerted by an object due to gravity
B.
Volume measures the amount of matter in an object
C.
Volume measures the space occupied by an object
D.
Volume measures the density of an object
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ANSWER :
C. Volume measures the space occupied by an object
18.
Specific gravity compares the density of a substance to the density of ?
A.
Gold
B.
Mercury
C.
Water
D.
Air
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ANSWER :
C. Water