Biology
Assertion (A): Fossil fuels are renewable and non-conventional sources of energy.
Reason (R): The underground reserves of coal and petroleum are depleting fast. People should look at other non-conventional sources of energy like solar energy, tidal energy, etc. for their use.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Related Questions
Assertion (A): Population density is the number of individuals in an area of 100 square kilometers per year.
Reason (R): Population density gives us an idea of all the living organisms of different species in a particular area every year.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion (A): Tubectomy is a temporary method of contraception for males in which the sperm ducts are cut and ligated with a nylon thread.
Reason (R): Tubectomy closes the passage of the sperms. The sperm duct is also known as vas deferens, which stores the sperms for some days during which they mature and become motile.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion (A): Pesticides are the chemical substances used in agriculture to destroy pests.
Reason (R): DDT is an example of a pesticide which is widely used all over India. Pests are the enemies of crop.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion (A): Ozone layer is a sort of sunscreen present high up in the atmosphere which prevents the harmful ultra-violet rays of the sun from harming us.
Reason (R): Ozone is an allotropic form of carbon which is formed in the atmosphere due to the release of chloroflurocarbons.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.