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Question (1)

QN0029173

Density of a substance is defined as:

(A) Volume per unit mass
(B) Mass per unit volume
(C) Mass × Volume
(D) Mass + Volume

Correct Answer: B

Explanation:

Density = Mass ÷ Volume.

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Question (2)

QN0029174

The SI unit commonly used for density in school science is:

(A) g
(B) cm³
(C) g/cm³
(D) mL

Correct Answer: C

Explanation:

Density is commonly expressed in g/cm³.

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Question (3)

QN0029175

Which two physical quantities are required to calculate density?

(A) Mass and weight
(B) Mass and volume
(C) Volume and area
(D) Length and mass

Correct Answer: B

Explanation:

Density depends on mass and volume.

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Question (4)

QN0029176

The formula for density is:

(A) Density = Volume ÷ Mass
(B) Density = Mass × Volume
(C) Density = Mass ÷ Volume
(D) Density = Mass + Volume

Correct Answer: C

Explanation:

Density = Mass ÷ Volume.

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Question (5)

QN0029177

A substance has a mass of 120 g and a volume of 60 cm³. Its density is:

(A) 1 g/cm³
(B) 2 g/cm³
(C) 3 g/cm³
(D) 4 g/cm³

Correct Answer: B

Explanation:

Density = 120 ÷ 60 = 2 g/cm³.

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Question (6)

QN0029178

A block has a mass of 90 g and occupies 45 cm³. What is its density?

(A) 0.5 g/cm³
(B) 1.0 g/cm³
(C) 2.0 g/cm³
(D) 4.0 g/cm³

Correct Answer: C

Explanation:

Density = 90 ÷ 45 = 2 g/cm³.

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Question (7)

QN0029179

Which substance is denser?

(A) 100 g in 200 cm³
(B) 120 g in 100 cm³
(C) 150 g in 300 cm³
(D) 180 g in 360 cm³

Correct Answer: B

Explanation:

Density = 120 ÷ 100 = 1.2 g/cm³, highest among the options.

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Question (8)

QN0029180

A material has density 4 g/cm³ and volume 50 cm³. Its mass is:

(A) 100 g
(B) 150 g
(C) 200 g
(D) 250 g

Correct Answer: C

Explanation:

Mass = Density × Volume = 4 × 50 = 200 g.

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Question (9)

QN0029181

If two objects have the same volume, the one with greater mass has:

(A) lower density
(B) equal density
(C) higher density
(D) zero density

Correct Answer: C

Explanation:

For equal volume, greater mass means greater density.

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Question (10)

QN0029182

Which statement correctly defines density?

(A) Amount of space occupied by a unit mass
(B) Mass present in a unit volume of a substance
(C) Weight of a substance per unit area
(D) Total mass of a body

Correct Answer: B

Explanation:

Density is mass per unit volume.

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Question (1)

Density of a substance is defined as:

Explanation:

Link:

Question (2)

The SI unit commonly used for density in school science is:

Explanation:

Link:

Question (3)

Which two physical quantities are required to calculate density?

Explanation:

Link:

Question (4)

The formula for density is:

Explanation:

Link:

Question (5)

A substance has a mass of 120 g and a volume of 60 cm³. Its density is:

Explanation:

Link:

Question (6)

A block has a mass of 90 g and occupies 45 cm³. What is its density?

Explanation:

Link:

Question (7)

Which substance is denser?

Explanation:

Link:

Question (8)

A material has density 4 g/cm³ and volume 50 cm³. Its mass is:

Explanation:

Link:

Question (9)

If two objects have the same volume, the one with greater mass has:

Explanation:

Link:

Question (10)

Which statement correctly defines density?

Explanation:

Link:

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