MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100

Mention the advantages and disadvantages of electrostatic precipitator.

Important Questions on Environmental Issues

MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 4
What do you mean by anthropogenic pollution and Natural pollution ?
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 5
Classify the solid wastes.
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 6
Write about polyblend.
 
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 7
What is afforestation ?
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 8
What is greenhouse effect? What are its consequences?
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 9
How is ozone depleted in the atmosphere?
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 10
Mention three causes of deforestation.
HARD
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 1
Classify the pollutants by the help of a chart.