Prelims

In which of the following activities are Indian Remote Sensing (IRS) satellites used?
(1) Assessment of crop productivity
(2) Locating ground water resources
(3) Mineral exploration
(4) Telecommunications
(5) Traffic studies
Select the correct answer using the code given below.

Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1. The orbit is geosynchronous.
2. The orbit is circular.
3. The orbit lies in the plane of the earth’s equator.
4. The orbit is at an altitude of 22,236 km.

In the context of space technology, what is Bhuvan, recently in the news ?

Consider the following statements : The Satellite Oceansat-2 launched by India helps in
1. estimating the water vapour content in the atmosphere.
2. predicting the onset of monsoons.
3. monitoring the pollution of coastal waters.
Which of the statements given above is/are correct ?

India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier ?