science & tech MCQ section 7 MCQ Questions & Answers Detailed Explanation

Answer: (b)

The Radio Astronomy Centre (RAC) is part of the National Centre for Radio Astrophysics (NCRA) of the well-known Tata Institute of Fundamental Research (TIFR) which is funded by the Government of India through the Department of Atomic Energy.

The RAC is situated near Udhagamandalam (Ooty) in the beautiful surroundings of the Nilgiri Hills and it provides a stimulating environment for the front-line research in radio astronomy and astrophysics with its excellent and highly qualified staff and international reputations.

Answer: (b)

Prime Minister Narendra Modi launched ProActive Governance and Timely Implementation (PRAGATI) platform on 25 March 2015.

Answer: (b)

It was launched by Polar Satellite Launch Vehicle (PSLV) C-27. It is launched from Satish Dhawan Space Centre, Sriharikota in Andhra Pradesh.

Answer: (a)

Under the Asteroid Redirect Mission (ARM) an asteroid or its part will be captured by the robotic spacecraft. ‘2011 MD’ has been shortlisted for this purpose along with other two.

Answer: (b)

Sunlight doesn’t light up space because there is nothing there for it to light up. Light in space travels in straight lines, so we only see sunlight when we look at the sun.

As for the rest of the universe, if we assume an infinite universe, we would expect it to be bright with the light of infinity of stars. This is called Olbers’ paradox.

But the intensity of the light decreases with the square of the distance, and at some point, the stars are too far away and receding too fast for their light to ever reach us. So the actual amount of starlight from very distant stars is negligible.

Answer: (b)

Restriction endonucleases are enzymes that make cuts at specific positions within the DNA molecule. They act as molecular scissors. They recognise specific base sequence at palindrome sites in DNA duplex and cut its strands.