Q.  Consider the following statements about Gas Hydrates:

1. Gas hydrates are crystalline form of methane and water
2. They are mainly found in marine sediments on continental shelf margins

  Which of the above statements is/are correct?
Answer: Both 1 & 2
Notes: Gas hydrates are crystalline form of methane and water. They are mainly found in marine sediments on continental shelf margins.  Recently, a large natural gas discovery has been made in the Indian Ocean following a joint expedition by India and the U.S. Natural gas hydrates are a naturally occurring, ice-like combination of natural gas and water found in oceans and Polar Regions.