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

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Important Questions on Science and Technology

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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 44
Which among the following do/does not belong to the GSM family of wireless technologies?
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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 45

Consider the following

1. Bluetooth device

2. Cordless phone

3. Microwave oven

4. Wi-Fi device

Which of the above can operate between 2.4 and 2.5GHz range of radio frequency band?

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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 46
Which one of the following reflects back more sunlight as compared to other three?
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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 47

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 place of the Earth’s equator.
4. the orbit is at an altitude of 22236 km.

Select the correct answer using the codes given below:

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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 48
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth _____.
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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 49
What is the difference between Bluetooth and Wi-Fi devices?
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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 50
What is ‘Virtual Private Network’?
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IAS (PRE) General Studies Paper 1>Chapter 14 - Science and Technology>Exercise 1>Q 51
A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD?
1. DVD supports Standard Definition video while BD supports High Definition video.
2. Compared to a DVD, the BD format has several times more storage capacity.
3. Thickness of BD is 2.4 mm while that of DVD is 1.2 mm.
Which of the statement(s) given above is/are correct?