Multiple choice question:

What is the time difference between IST and GMT?

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7 \frac{1}{2}

hours behind GMT

5 \frac{1}{2}

hours ahead of GMT

There is no difference

5 \frac{1}{2}

hours behind GMT

answer is B.

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Detailed Solution

Indian Standard time is

5 \frac{1}{2}

hours ahead of Greenwich Mean Time (GMT).
GMT is measured at an observatory in Greenwich, London. Greenwich mean time is the average solar time at the Greenwich meridian, which is used as the standard time in the British Isles. India is 05:30 hours ahead of GMT. Indian Standard Time (IST) is the time zone followed in India. The imaginary line passing through Mirzapur in Uttar Pradesh is considered the Standard Meridian of India. It is 82° 30’ E longitude.

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