How is coal formed?

Important Questions on Coal, Petroleum and Petrochemicals

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 3

Which type of coal has maximum sulphur content?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 1

What is fractional distillation?

MEDIUM

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 2

Why is fractional distillation of petroleum necessary? What type of gases are obtained in the upper part of the fractionating column?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 3

Why does petroleum not have a chemical formula?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 1

What do we mean by the recycling of plastics?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Questions>Q 2

What is combustion? Explain.

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Exercises>Q 1

Coal is produced from the remains of:

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 16 - Coal, Petroleum and Petrochemicals>Exercises>Q 1

The conditions necessary for formation of fossil fuels are: