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

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.

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: (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)

Amogh is a high-speed patrolling ship inducted by Indian Coast Guard into its fleet.

Answer: (c)

The Indian Institutes of Technology (IITs) are governed by the Institutes of Technology Act, 1961 which lists sixteen institutes. The first IIT was established in 1951, in Kharagpur (near Kolkata) in the state of West Bengal.

The second IIT to be established, IIT Bombay, was founded in 1958 in Powai, Mumbai. It was set up with assistance from UNESCO and the Soviet Union

Answer: (a)

The Indian Space Research Organisation (ISRO) is the primary space agency of the Indian government. ISRO is amongst the six largest government space agencies in the world, along with NASA, RKA, ESA, CNSA and JAXA. Its primary objective is to advance space technology and use its applications for national benefit.

Established in 1969, ISRO superseded the erstwhile Indian National Committee for Space Research (INCOSPAR). Headquartered in Bangalore, ISRO is under the administrative control of the Department of Space, Government of India.

ISRO has achieved numerous milestones since its establishment.