Questions
Which of the following statements regarding 'natural resources' is incorrect?
- All the natural resources occur in nature.
- Fossil fuel is a type of natural resource.
- All natural resources are non-living.
- Both options 1 and 2
- Both options 2 and 3
Which of the following statements regarding coal is incorrect?
- The only product produced after processing coal is coke.
- It is used to generate electricity.
- It is a hard and black substance.
- It is used to bake bricks.
- Coal is a fossil fuel.
Which of the following are the conditions under which fossil fuels are formed from the remains of organisms?
(a) Absence of oxygen
(b) Absence of water
(c) High temperature
(d) High pressure
- Only (a), (b) and (c)
- Only (b), (c) and (d)
- Only (a) and (b)
- Only (c) and (d)
- Only (a), (c) and (d)
Which of the following products obtained after processing coal is/are used in the manufacture of steel?
- Carbon dioxide
- Coal tar
- Coke
- Coal gas
- All of these
Which of the following statements correctly defines coal?
- Coal is soft and black stone like substance formed from the remains of dead animals.
- Coal is hard and black stone like substance formed from the remains of dead plants.
- Coal is soft and black stone like substance formed from the remains of dead animals and plants.
- Coal is hard and black stone like substance formed from the remains of dead animals and plants.
- Coal is hard and black stone formed by deposition of sand.
Dilute sulphuric acid is used in the extraction and refining process of petroleum to
- remove basic impurities
- obtain various components of petroleum
- remove acidic impurities
- pump out oil from the pipe
- None of these
Which of the following is not an air pollutant produced by the combustion of fossil fuels?
- Sulphuric acid
- Nitrogen oxide
- Sulphur dioxide
- Heavy metals
- Volatile organic compounds
On heating in absence of oxygen (pyrolysis), n-hexadecane cracks into
- two octanes
- two octenes
- n-octane and one octene
- n-octene and octane
- None of these
Petrol and diesel are the most common fuels used for automobiles. They are obtained from petroleum and are formed from
- dead plants
- dead animals buried underground
- dead organisms of the sea
- dead marine plants
- All of these
Which of the following petroleum products is used in making roads nowadays?
- Coke
- Coal tar
- Bitumen
- Coal
- None of these
Which of the following products is/are produced when combustion of pentane takes place in the presence of insufficient amount of oxygen?
- Carbon dioxide
- Carbon dioxide and water
- Methane and propane
- Carbon monoxide and water
- None of these
Which of the following is not a method of conserving petroleum?
- Correct pressure levels in the tyres while driving a petrol vehicle
- Driving at high speed and reaching the destination faster
- Using public transport
- Switching off engines at traffic junctions
- Timely servicing of vehicles
Natural gas is used in the production of fertilisers because
- it supplies hydrogen gas used in the process
- it supplies nitrogen gas used in the process
- it supplies ammonia
- it supplies oxygen
- None of these
Natural gas is a better fuel because
(1) It burns completely
(2) It is cheaper
(3) It generates less pollution
(4) It is a fossil fuel
- Only (1) and (2)
- Only (2) and (3)
- Only (3) and (4)
- Only (1) and (3)
- Only (2) and (4)