Extraction of Oils

Q. Describe how coal is formed from dead vegetation.​ What is this process called? [2 marks]

Q. When a balloon containing air is pricked with a nail, the air from balloons comes out of it because:

1. the air pressure inside the balloon is low compared to atmospheric pressure.
2. the air pressure inside the balloon is equal to atmospheric pressure.
3. the air pressure inside the balloon is not comparable to atmospheric pressure.
4. the air pressure inside the balloon is high compared to atmospheric pressure.

Q. Assertion (A): Crude petroleum or crude oil pumped out of oil well is not pure.

Reason (R): Petroleum is refined to get various fractions which can be used for a specific purpose.

1. Both A and R are true and R explains A
2. A is true and R is false
3. Both A and R are false
4. Both A and R are true but R does not explain A

Q. For the synthesis of oil from powdered coal it is mixed with a hot solvent and treated with

1. Hydrogen
2. Nitrogen
3. Helium
4. Butane

Q.

What is the place called where vast amounts of oil is trapped?

1. Oiling Fields

2. Tar Pits

3. Reservoirs

4. Natural Gas Pockets

Q. are used to determine presence of oil in rocks.

1. Barometers
2. Geophones
3. Anemometers
4. Speedometers

Q. keep away tiny oil drops from clinging to the rocks.

1. Surfactants
2. Acids
3. Bases
4. Ammonia solution

Q. Petroleum is made of fossils from which of the following animals?

1. Whales
2. Lions
3. Turtles
4. Horses

Q. Which method is used to separate petroleum into its components?

1. Fractional distillation
2. Burning
3. Carbonisation
4. Evaporation

Q. Which of the following is found between the layers of rocks that are buried deep under the surface of the Earth?

1. Coal tar
2. Petroleum
3. Coal
4. Hydrogen fuel