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Question (11)

QN0037631

Which set of factors mainly determines the economic viability of mineral extraction?

(A) Colour, size and hardness
(B) Depth, colour and shape
(C) Concentration, ease of extraction and closeness to market
(D) Rainfall, temperature and vegetation

Correct Answer: C

Explanation:

Economic viability depends on concentration, ease of extraction and closeness to the market.

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Question (12)

QN0037632

In 2018–19, if 97% of India's iron ore production came from four major states, what percentage came from other states?

(A) 7%
(B) 5%
(C) 3%
(D) 13%

Correct Answer: C

Explanation:

Production from other states = 100% − 97% = 3%.

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Question (13)

QN0037633

Which iron ore has an iron content of up to about 70%?

(A) Hematite
(B) Magnetite
(C) Limonite
(D) Siderite

Correct Answer: B

Explanation:

Magnetite contains up to about 70% iron and has excellent magnetic properties.

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Question (14)

QN0037634

A mine produces 1,000 tonnes of magnetite containing 70% iron. Another mine produces 1,000 tonnes of ore containing 55% iron. What is the difference in the amount of iron obtained?

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

Correct Answer: B

Explanation:

Difference = 1000 × (70−55)/100 = 150 tonnes.

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Question (15)

QN0037635

Approximately how much manganese is required to produce one tonne of steel?

(A) 1 kg
(B) 10 kg
(C) 50 kg
(D) 100 kg

Correct Answer: B

Explanation:

About 10 kg of manganese is required to make one tonne of steel.

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Question (16)

QN0037636

If 2,500 tonnes of steel are produced, approximately how much manganese would be required?

(A) 2.5 tonnes
(B) 10 tonnes
(C) 25 tonnes
(D) 250 tonnes

Correct Answer: C

Explanation:

Manganese required = 2,500 × 10 kg = 25,000 kg = 25 tonnes.

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Question (17)

QN0037637

Bailadila iron ore is exported mainly to:

(A) Nepal and Bhutan
(B) Japan and South Korea
(C) Sri Lanka and Maldives
(D) Bangladesh and Myanmar

Correct Answer: B

Explanation:

Bailadila iron ore is exported to Japan and South Korea through Visakhapatnam.

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Question (18)

QN0037638

Kudremukh iron ore is transported to the port near Mangaluru mainly through:

(A) Railway wagons
(B) Slurry pipelines
(C) Inland waterways
(D) Road tankers

Correct Answer: B

Explanation:

Kudremukh ore is transported as slurry through a pipeline to the port near Mangaluru.

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Question (19)

QN0037639

If a state produces 60% of 10 million tonnes of iron ore, how much does it produce?

(A) 4 million tonnes
(B) 5 million tonnes
(C) 6 million tonnes
(D) 7 million tonnes

Correct Answer: C

Explanation:

Production = 60/100 × 10 = 6 million tonnes.

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Question (20)

QN0037640

Which property makes copper useful for electrical applications?

(A) It is a good conductor and is ductile
(B) It is extremely brittle
(C) It has very low conductivity
(D) It cannot be drawn into wires

Correct Answer: A

Explanation:

Copper is malleable, ductile and a good conductor of electricity.

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Question (11)

Which set of factors mainly determines the economic viability of mineral extraction?

Explanation:

Link:

Question (12)

In 2018–19, if 97% of India's iron ore production came from four major states, what percentage came from other states?

Explanation:

Link:

Question (13)

Which iron ore has an iron content of up to about 70%?

Explanation:

Link:

Question (14)

A mine produces 1,000 tonnes of magnetite containing 70% iron. Another mine produces 1,000 tonnes of ore containing 55% iron. What is the difference in the amount of iron obtained?

Explanation:

Link:

Question (15)

Approximately how much manganese is required to produce one tonne of steel?

Explanation:

Link:

Question (16)

If 2,500 tonnes of steel are produced, approximately how much manganese would be required?

Explanation:

Link:

Question (17)

Bailadila iron ore is exported mainly to:

Explanation:

Link:

Question (18)

Kudremukh iron ore is transported to the port near Mangaluru mainly through:

Explanation:

Link:

Question (19)

If a state produces 60% of 10 million tonnes of iron ore, how much does it produce?

Explanation:

Link:

Question (20)

Which property makes copper useful for electrical applications?

Explanation:

Link:

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