What if it Finishes? | Class 5 | EVS | NCERT Solutions

Renewable and Non-renewable resources

1. What do you mean by renewable resources?

Ans: The resources which are not limited in supply and can be replaced after use are called as renewable resources.

For example: Sunlight, wind etc.

2. What do you mean by Non-renewable resources?

Ans: The resources which are limited in supply and cannot be replaced once they are used are called as non-renewable resources.

For example: coal, oil, natural gas etc.

3. What is renewable energy?

Ans: The energy which is collected from renewable resources like sunlight, wind, rain etc. and can be regenerated is called renewable energy.

4. What is non-renewable energy?

Ans: The energy which is collected from non-renewable resources like coal, oil etc. and can not be regenerated is called non-renewable energy.

5. Write four differences between renewable resources and non-renewable resources.

Ans:

Renewable resources	Non-renewable resources
These resources are unlimited.	These resources are limited.
They will be regenerated again.	They will not be regenerated.
They are environment friendly.	They cause pollution.
Ex: Sunlight, wind, rain etc.	Ex: Coal, Oil, natural gas
They are cheap.	They are expensive.

 6. List out any four kinds of fuel used for various purposes.

Ans: Four kinds fuel used for various purposes are:

• Kerosene
• Petrol
• Firewood
• Cow-dung cake
• Etc.

7. What problems can we face from smoke coming out of vehicles?

Ans: We may have problems like:

• Air pollution
• Health issues
• Burning eyes
• Etc.

8. What is oil field? List any two oil fields of our country.

Ans: Oil fields are the places rich in petroleum deposits.

Two oil fields of our country are as follow:

• Ankleshwar (Gujarat)
• Mumbai High (Maharashtra)

9. Write the full form of LPG and CNG.

Ans:

• LPG: Liquefied Petroleum Gas
• CNG: Compressed Natural Gas

10. What do you mean by Petroleum?

Ans: Petroleum is also called as crude oil. It is a smelly, thick, dark coloured liquid. It contains many things mixed in it.

11. What is oil refinery? Name two oil refineries of our country.

Oil refinery is an industrial area where crude oil is refined into useful products.

12. List out the petroleum products. (any four)

The products obtained from petroleum are as follows:

• Petrol
• Kerosene
• Wax
• Engine oil
• Diesel
• LPG
• Coaltar
• Grease
• Etc.

13. Write the use of petroleum products.

Petroleum products are used as follows:

• To run machines
• As fuel for vehicles
• For lighting lanterns
• For dry cleaning
• For making plastic and paintings
• Etc.

14. Suggest four ways to save oil.

• Switch off the engine at the traffic signals.
• Use public vehicles instead of personal vehicles.
• Use bicycles for shorter distances.
• Use electric vehicles and machines.

15. Which products are called as black diamond and liquid gold?

Ans: Petrol is called as liquid gold whereas coal is called as black diamond.