Question

Answer these question:-​

Answer 1

Answers:-

1) False

• Coal is a renewable source of energy is false statement .Coal is exhaustible natural resource it means it is present in limited quantity if these resourses one replinished Can't be recovered or recycle .

2) True

• Coal is a solid fossil is true statement as it is found in solid form .

3) True

• Coke is a pure form of carbon is true because when we change coal into coke the coal contain some sulphur etc . So on burning coal all impurities removed and we get Coke .

4) False

• CNG is more polluting than petrol is false statement . CNG is a cleaner fuel it contains very low content of carbon in it .

5) False

• 40% of electricity generation is depend on coal is false statement . In cirrent world we have many eco friendly sources for electricity generation like solar energy , biogas energy , tidal energy etc .

6) True

• Carbon content of lignite is 25 to 35 % is true statement . Lignite is brownish black in colour and has 25 to 35 % carbon content .

7) False

• Fossil fuels are inexhaustible resourses is false statement . Fossil fuels are present in limited quatity ones replineshed cannot be recovered . Fossil Fuels are exhaustible natural resources .

8) True

• Napthalene ball is obtained from coal tar is true statement . Napthalene ball is use to repel other moths and insects .

$9) \: True \:$

• The time period taken to complete carbonisation is called carboniferous age is true statement . Carboniferous age is time period to convert organic matter into resources