science & tech MCQ section 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statements:

1. Defence Research and Development Organisation (DRDO) has successfully tested an advanced electronic warfare (EW) suite from Tejas-PV1.
2. EW suite consists of Radar Warner and Jammer.
3. It will replace existing EW systems, which are fitted on various combat aircraft as they consist of basic equipment – Radar Warner Receiver.

a) 1 and 3 only

b) 2 and 3 only

c) 1 and 2 only

d) All of the above

Question : 2

Indian Space Research Organization (ISRO) has successfully placed communication satellite GSAT-6 into its intended geosynchronous transfer orbit. Which are the correct information regarding this move?

1. It was launched by (GSLV)-D6
2. GSLV-D6 is three-stage heavy weight rocket with indigenously made Cryogenic Upper Stage (CUS).
3. It is fueled by solid and liquid propellants.
4. GSAT-6 is 25th indigenously built geostationary communications satellite

a) 1, 2 and 3 only

b) 1, 2 and 3 only

c) 1 and 2 only

d) 1, 2 and 4 only

Question : 3

For a missile launched with a velocity less than the earth’s escape velocity, the total energy is

a) Negative

b) Positive

c) Zero

d) either positive of negative

Question : 4

What is supernova ?

a) A dying star

b) A comet

c) An asteroid

d) A black hole

Question : 5

Consider the following statements.

1. Bharat Heavy Electricals Limited (BHEL) has commissioned a 660 MW unit of Prayagraj Super Thermal Power Project at Bara town in Lucknow district of Uttar Pradesh.
2. This is the first supercritical thermal unit to be commissioned in the state to achieve capacity addition on attaining full load.
3. It is Greenfield thermal power project is owned by Prayagraj Power Generation Company Limited (PPGCL), a subsidiary company of Jaiprakash Power Ventures Limited.

a) 1 and 3

b) 2 and 3

c) 1 and 2

d) All of these

Question : 6

From where was INSAT-2E launched?

a) Kourou

b) Chandipur

c) Sriharikota

d) Baikanour