‘itai-itai’ disease is caused due to

Important Questions on Environmental Issues

MEDIUM

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 16

What is $\mathrm{BOD}$ ?

HARD

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 17

What is deforestation ? Write its causes and effects.

HARD

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 18

What is radiation pollution ? What are the effects of it ?

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 19

Which is natural air pollutant?

MEDIUM

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 20

Concentration of $\mathrm{DDT}$ increases in next trophy level by which process-

MEDIUM

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 21

Tajmahal located in Agra is in danger due to which gas-

EASY

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 22

Full form of $\mathrm{B}.\mathrm{O}.\mathrm{D}.$ is-

MEDIUM

12th Bihar Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 23

Which of the following causes ozone hole ?