EASY
Earn 100

Which of these is used in extraction of metals?

69.23% studentsanswered this correctly

Important Questions on Coal and Petroleum

EASY
Science>Chemistry>Coal and Petroleum>Coal
What is the industrial source of CNG?
MEDIUM
Science>Chemistry>Coal and Petroleum>Coal
Explain the destructive distillation of mineral coal in the laboratory by drawing a figure.
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Science>Chemistry>Coal and Petroleum>Coal
Write any two products that are obtained when coal is distilled in the absence of air.
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Which of the following variety of coal contains the highest percentage of carbon? 
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Find the odd one out.
 
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Science>Chemistry>Coal and Petroleum>Coal

Statements given below are incorrect. Write the correct statements.

Coal is a renewable fuel.

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Science>Chemistry>Coal and Petroleum>Coal
_____ is a soft black rock used as fuel.
MEDIUM
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Nylon is an artificial fibre which is obtained from petrochemicals. 

Coal gas is obtained by the fractional distillation of coal.

EASY
Science>Chemistry>Coal and Petroleum>Coal

Statements given below are incorrect. Write the correct statements.

During carbonisation the fossils of living beings change into petroleum.

MEDIUM
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Which are the three grades of peat?     
MEDIUM
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Describe how coal is formed from dead vegetation. What is this process called?
MEDIUM
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From where do we get coal?
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Science>Chemistry>Coal and Petroleum>Coal
What are the kinds of mineral coal?
MEDIUM
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How is coal formed? Mention three uses of coal. 
EASY
Science>Chemistry>Coal and Petroleum>Coal
The slow conversion of wood into coal by a biochemical process extending over million of years is called :
EASY
Science>Chemistry>Coal and Petroleum>Coal

Helium is used in metallurgy.

MEDIUM
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Which chemical process is used for obtaining a metal from its oxide?
MEDIUM
Science>Chemistry>Coal and Petroleum>Coal
What are the products obtained by the destructive distillation of coal?
MEDIUM
Science>Chemistry>Coal and Petroleum>Coal
From where do we get coal?
MEDIUM
Science>Chemistry>Coal and Petroleum>Coal
Fly ash obtained from the burning of coal is used to make