EASY
UPSC CDS
IMPORTANT
Earn 100

Which gas is responsible for the depletion of the ozone layer around the earth which protect us from harmful ultraviolet rays?

50% studentsanswered this correctly

Important Questions on Environmental Issues and Pollution

EASY
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 33

Due to greenhouse effect _____.

MEDIUM
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 34

It is reported that there is an ongoing decrease in the pH value of ocean water because of global warming. It happens due to _____.

HARD
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 35
Why 'oceans' are considered as the critical marker of climate change?
EASY
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 36
Which of the following statements are correct about the deposits of methane hydrate?
1. Global warming might trigger the release of methane gas from these deposits.
2. Large deposits of 'methane hydrate' are found in Arctic Tundra and under the seafloor.
3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.
Select the correct answer using the code given below.
EASY
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 37

Consider the statements regarding.

Biosequestration:

1. Biosequestration is an artihcial process that captures and stores the atmospheric greenhouse gas carbon dioxide by biological processes.

2. Biosequestration is a natural process responsible for the formation of the extensive coal and oil deposits which are now being burned.

Which of the statements given above is/are NOT Correct? 

HARD
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 38
World climate conference popularly known as COP-21 (2015) was held in
EASY
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 2>Q 39
In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into the stratosphere?
MEDIUM
UPSC CDS
IMPORTANT
Environment and Ecology for Defence Exams>Chapter 3 - Environmental Issues and Pollution>Exercise 3>Q 1

In drinking water number of Coliform bacteria should not exceed: