Coal And Petroleum class 8

The layer containing petroleum oil and gas is

• above water

• below sand

• above that of water

• all of the above

Tags

NGSS.MS-ESS3-1

Petroleum comes from

• Oil wells

• water

• coal

• Coal refinery

When coal is burnt it mainly produces

• carbon dioxide

• carbon monoxide

• sulphur dioxide

• nitrogen oxide

Coal tar is mixture of about _____ substances.

• 500

• 250

• 200

• 640

Hydrogen gas is obtained from

• coal

• natural gas

• none of the above

• both of these :)

Many useful substances are obtained from petroleum and natural gas. These are termed as

• Petrochemicals

• Ointments

• generators

• Petrobjects

Coal was first used for

• Making food

• Street lighting

• In railways

• None of the above

Natural gas have a calorific value about

• 55kg]/g

• 60]/g

• 65]/g

• 43]/g

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Coke contains _____ % of carbon

• 98

• 98.7

• 97

• 80

Name 3 varieties of coal

• Anthracite, Lignite, Bituminous

• Anthracite, Lignite, Paraffin

• Lignite, Bituminous, Kerosene

• None of the above