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Question (11)

QN005763

Which of the following is an example of a mineral?

(A) Quartz
(B) Wood
(C) Paper
(D) Plastic

Correct Answer: A

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Question (12)

QN005764

A mineral collection contains 24 quartz samples and 16 mica samples. What is the total number of samples?

(A) 30
(B) 36
(C) 40
(D) 48

Correct Answer: C

Explanation:

24 + 16 = 40.

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Question (13)

QN005765

Soil contains air mainly because:

(A) Soil particles have spaces between them
(B) Air is produced by roots only
(C) Water changes into air
(D) Rocks release air continuously

Correct Answer: A

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Question (14)

QN005766

A soil sample weighs 800 g. If 25% of it is clay, how much clay does it contain?

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

Correct Answer: C

Explanation:

25% of 800 = 200 g.

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Question (15)

QN005767

Which type of soil generally retains the maximum amount of water?

(A) Sandy soil
(B) Clayey soil
(C) Gravelly soil
(D) Rocky soil

Correct Answer: B

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Question (16)

QN005768

Which activity helps demonstrate the presence of air in soil?

(A) Heating a metal rod
(B) Pouring water into dry soil and observing bubbles
(C) Dissolving salt in water
(D) Growing seeds in cotton

Correct Answer: B

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Question (17)

QN005769

A bag contains 900 g of sandy soil. If 1/3 of it is removed, how much soil remains?

(A) 300 g
(B) 450 g
(C) 600 g
(D) 700 g

Correct Answer: C

Explanation:

900 − 300 = 600 g.

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Question (18)

QN005770

Which soil type allows water to pass through it most quickly?

(A) Clayey soil
(B) Humus-rich soil
(C) Sandy soil
(D) Loamy soil

Correct Answer: C

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Question (19)

QN005771

A field contains 1200 kg of soil. If 10% is lost due to erosion, how much soil remains?

(A) 960 kg
(B) 1000 kg
(C) 1080 kg
(D) 1100 kg

Correct Answer: C

Explanation:

90% of 1200 = 1080 kg.

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Question (20)

QN005772

Which factor contributes to the weathering of rocks?

(A) Wind and water
(B) Television signals
(C) Plastic waste
(D) Electricity only

Correct Answer: A

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Question (11)

Which of the following is an example of a mineral?

Explanation:

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Question (12)

A mineral collection contains 24 quartz samples and 16 mica samples. What is the total number of samples?

Explanation:

Link:

Question (13)

Soil contains air mainly because:

Explanation:

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Question (14)

A soil sample weighs 800 g. If 25% of it is clay, how much clay does it contain?

Explanation:

Link:

Question (15)

Which type of soil generally retains the maximum amount of water?

Explanation:

Link:

Question (16)

Which activity helps demonstrate the presence of air in soil?

Explanation:

Link:

Question (17)

A bag contains 900 g of sandy soil. If 1/3 of it is removed, how much soil remains?

Explanation:

Link:

Question (18)

Which soil type allows water to pass through it most quickly?

Explanation:

Link:

Question (19)

A field contains 1200 kg of soil. If 10% is lost due to erosion, how much soil remains?

Explanation:

Link:

Question (20)

Which factor contributes to the weathering of rocks?

Explanation:

Link:

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