UPPSC 2017 GS-I Environment & Ecology
Question

Which of the following is considered to be the optimum concentration of carbon dioxide for natural balance in atmosphere?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: 0.04%

Detailed Solution:

The correct answer is “0.04%”.

The concentration of carbon dioxide (CO₂) in the Earth's atmosphere is typically around 0.03% to 0.04% (300-400 parts per million). This level is considered to be within the natural balance necessary for maintaining Earth's climate and supporting plant photosynthesis.

Similar Questions:

The discussion on 'Sustainable Development' was started after submitting a report on environment to the United Nation in 1987. That report was:
  1. First Report on Climate Change
  2. Our Common Future
  3. Second Report on Climate Change
  4. Fifth Assessment Report
Match the following list-I with list-II and select, the correct answer from the code given below the Lists:
List-I (States) - List-II (National parks)

A. Uttar Pradesh - 1. Bandipur
B. Assam - 2. Rajaji National Park
C. Orissa - 3. Similipal
D. Karnataka - 4. Manas

Code:
A B C D
  1. 1 2 3 4
  2. 2 4 3 1
  3. 4 3 2 1
  4. 2 3 1 4
Incinerators are used for which of the following?
  1. Burning wastes
  2. Putting wastes into them
  3. For cutting green trees
  4. For making fertilizers
Whose army was defeated by the army of Kakatiya rulers in 1303 at Warangal?
  1. Of Iltutmish
  2. Of Balban
  3. Of Alauddin Khalji
  4. Of Muhammad
Consider the following statements:

(a) The early chaityagrihas and viharas of Guntuphalli in West Godavari district are rock cut.
(b) The chaityas and viharas of Eastern deccan are usually rock cut.

Of these statements:
  1. Only a is correct
  2. Only b is correct
  3. Both a and b are correct
  4. Neither a nor b is correct
Which one of the following states has the ideal habitat for the Siberian crane?
  1. Arunachal Pradesh
  2. Assam
  3. Andhra Pradesh
  4. Rajasthan
Which of the following group of gases contribute to the "Green House Effect"?
  1. Ammonia and Ozone
  2. Carbon monoxide and Sulphur dioxide
  3. Carbon tetrafluoride and Nitrous oxide
  4. Carbon dioxide and Methane
In India Project Elephant was launched in the year-
  1. 1968
  2. 1970
  3. 1972
  4. 1992
What is meant by a Bullock–Capitalist?
  1. Farmers who are poor
  2. Farmers who are rich
  3. Farmers who have some resources but are not rich
  4. Farmers who are big Zamindars
Which of the following tree, once very popular in social forestry, is now taken to be environmental hazard:
  1. Babul
  2. Amaltas
  3. Neem
  4. Eucalyptus
The stones present in the gall bladder affect the digestion of:
  1. Protein
  2. Carbohydrate
  3. Fat
  4. Nucleic acid
The first National Park established in India is:
  1. Namdapha National Park
  2. Corbett National Park
  3. Dudhwa National Park
  4. Guinady National Park