Volume, Density and Specific Gravity NDA Questions

NDA Physics

Volume, Density and Specific Gravity MCQ Questions


7.
Which of the following materials would float on water?
A.
Wood (density = 800 kg/m³)
B.
Iron (density = 7800 kg/m³)
C.
Aluminum (density = 2700 kg/m³)
D.
Lead (density = 11340 kg/m³)
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ANSWER :
A. Wood (density = 800 kg/m³)
8.
Which of the following substances has the highest density?
A.
Water
B.
Ice
C.
Wood
D.
Steel
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ANSWER :
D. Steel
9.
What is the SI unit of density?
A.
Kilogram per meter squared (kg/m²)
B.
Kilogram per cubic meter (kg/m³)
C.
Meter per second (m/s)
D.
Meter per second squared (m/s²)
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ANSWER :
B. Kilogram per cubic meter (kg/m³)
10.
What is volume, and how does it differ from mass and weight?
A.
Volume measures the amount of matter in an object, unlike mass and weight.
B.
Volume measures the space occupied by an object, unlike mass and weight.
C.
Volume measures the force exerted by an object due to gravity, unlike mass and weight.
D.
Volume measures the density of an object, unlike mass and weight.
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ANSWER :
B. Volume measures the space occupied by an object, unlike mass and weight.
11.
What is density, and why is it considered an intensive property of matter?
A.
Density measures the amount of matter in an object and varies with its size.
B.
Density measures the space occupied by an object and remains constant regardless of its size.
C.
Density measures the mass per unit volume of a substance and remains constant regardless of the amount of substance.
D.
Density measures the force exerted by an object due to gravity and varies with its size.
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ANSWER :
C. Density measures the mass per unit volume of a substance and remains constant regardless of the amount of substance.
12.
What does specific gravity indicate about a substance?
A.
Specific gravity indicates the force exerted on an object due to gravity.
B.
Specific gravity indicates the volume of a substance relative to its mass.
C.
Specific gravity indicates the density of a substance relative to water.
D.
Specific gravity indicates the amount of matter in a substance.
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ANSWER :
C. Specific gravity indicates the density of a substance relative to water.