Multiple Choice Questions
Question 1: Which of these is almost pure form of carbon?
- Coal Tar
Answer: (b) Coke
Question 2: What should be the minimum age for the remains of organism to be categorized as fossil?
- 100 years
- 1,000 years
- 10,000 years
- 100,000 years
Answer: (c) 10,000 years
Question 3: The HVJ pipeline starts from which state?
- Madhya Pradesh
- Uttar Pradesh
Answer: (a) Gujarat
Question 4: Which of the following areas has recently shown good reserves of natural gas?
- Krishna Godavari Delta
- Cauvery Delta
- Sunderbans Delta
- Bay of Bengal
Answer: (a) Krishna Godavari Delta
Question 5: Which substance is used for making candles?
- Paraffin wax
- Lubricating oil
Answer: (b) Paraffin wax
Question 6: Which gas (obtained from natural gas) is used for manufacturing urea?
- Carbon dioxide
Answer: (c) Hydrogen
Very Short Answer Type Questions
Question 1: What is a natural resource?
Answer: A resources which is obtained from nature is called natural resources.
Question 2: What is inexhaustible natural resource?
Answer: A resource which is available in huge quantity and cannot be finished by human activities is called inexhaustible natural resources.
Question 3: What is exhaustible natural resource?
Answer: A resources which is available in limited quantity and can be finished by human activities is called exhaustible natural resources.
Question 4: What is fossil fuel?
Answer: A fuel which was made from fossils is called a fossil fuel.
Question 5: What is a fossil?
Answer: Dead remains of organisms are called fossils. The remains of organisms should be at least 10,000 years old to be categorized as fossil.
Question 6: What do you understand by carbonization?
Answer: The process by which vegetation is converted into coal is called carbonization.
Question 7: What is diesel?
Answer: Diesel is a fuel which is used in heavy vehicles, like buses and trucks. It is obtained after refining of petroleum.
Question 8: Petrol is obtained from which substance?
Question 9: Which petroleum product is used as fuel in airplane?
Short Answer Type Questions
Question 1: Write some uses of coal.
Answer: Uses of coal:
- Coal was used as fuel in steam engines.
- Most of the thermal power plants still use coal as fuel.
- Coal is still being used as kitchen fuel in some households, dhabas and restaurants.
- Many useful products; like coke, coal tar and coal gas; are made by processing coal.
Question 2: What is coke?
Answer: Coke is almost pure form of carbon, is tough, porous and black. Coke is used in manufacture of steel and extraction of many metals.
Question 3: Write some uses of coal tar.
Answer: It is used as raw material for making various items; like synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, naphthalene balls, etc. It is used for making the surface of roads.
Question 4: What happens after petroleum is taken out of oil well?
Answer: Crude oil needs to be processed to obtain useful products. After extraction from oil wells, petroleum is sent to oil refineries. Petroleum is subjected to fractional distillation in oil refinery. Various constituents of petroleum are separated through this process.
Question 5: Write two uses of natural gas.
Answer: Uses of natural gas:
- As compressed Natural Gas (CNG) which is used as fuel in automobiles.
- It is used as raw material for making fertilizer.