Q. Consider the following statements:
1.Indian Standard Time is ahead of Greenwich Mean Time by 5 hours and 30 minutes.
2.United States of America (USA) has four time zones.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: A
Notes:

Explanation: There is a general understanding among the countries of the world to select the standard meridian in multiples of 7°30′ of longitude.

  • That is why 82°30′ E has been selected as the ‘standard meridian’ of India.
  • Indian Standard Time is ahead of Greenwich Mean Time by 5 hours and 30 minutes.
  • There are some countries where there is more than one standard meridian due to their vast east-to-west extent. For example, the USA has seven time zones.

Source: NCERT

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