Consider the following statements.

1. Coal sector was nationalised by the Government of India under Indira Gandhi.

2. Now, coal blocks are allocated on lottery basis.

3. Till recently, India imported coal to meet the shortages of domestic supply, but now India is self-sufficient in coal production.

Which of the statements given above is/are correct?

Consider the following statements.

1. The Parliament (Prevention of Disqualification) Act, 1959 exempts several posts from disqualification on the grounds of 'Office of Profit'.

2. The above-mentioned Act was amended five times.

3. The term 'Office of Profit' is well-defined in the Constitution of India. 

Which of the statements given above is/are correct?

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void?

For the measurement/ estimation of which of the following are satellite images/remote sensing data used?

1. Chlorophyll content in the vegetation of a specific location.

2. Green house gas emissions from rice paddies of a specific location.

3. Land surface temperatures of a specific location.

Select the correct answer by using the codes given below

Consider the following states:
1. Chhattisgarh
2. Madhya Pradesh
3. Maharashtra
4. Odisha
With reference to the states mentioned above, in terms of percentage of forest cover to the total area of the state, which one of the following is the correct ascending order?

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 sea floor.

3. Methane in atmosphere oxidises two carbon dioxide after a decade or two.

Select the correct answer by using the codes given below:

Consider the following.

1. Carbon monoxide

2. Methane

3. Ozone

4. Sulphur dioxide

Which of the above are released into the atmosphere due to the burning of crop/ biomass residue?

Consider the following pairs.

 Which of the pairs given above are correctly matched?