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The following question based on science & tech topic of general awareness mcq
(a) restrict the action of the enzyme DNA polymerase
(b) make cuts at specific positions within the DNA molecule
(c) recognize a specific nucleotide sequence for binding of DNA ligase
(d) remove nucleotides from the ends of the DNA molecule
The correct answers to the above question in:
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.
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Read more science and tech Based General Awareness Questions and Answers
Question : 1
To an astronaut sky appears
a) rich blue
b) dark
c) light blue
d) white
Answer »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.
Question : 2
‘2011 MD’ shortlisted by NASA is a/an?
a) Asteroid
b) Meteoroid
c) Planet
d) Comet
Answer »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.
Question : 3
India’s first microwave remote sensing satellite recently launched is.
a) Megha Tropiquies
b) Rohini
c) RISAT-1
d) GSAT-12
Answer »Answer: (c)
India’s first microwave remote sensing satellite is RISAT-1.
Note: RISAT-1 is an indigenously developed radar imaging satellite successfully launched by a PSLVXL rocket on April 26, 2012, from Satish Dhawan Space Centre, Sriharikota. RISAT-2 was the first of the RISAT series to reach orbit.
It was launched successfully on April 20, 2009, by a PSLV rocket. After the November 26, 2008, Mumbai attacks, the launch plan was modified to launch RISAT2 before RISAT-1, since the indigenous C-band SAR to be used for RISAT-1 was not ready.
Question : 4
Consider the following statements AWACS project.
- Airborne Warning and Control Systems (AWACS) can detect incoming aerial threats like hostile fighters, drones and cruise missiles from 400 km away.
- The project will involve mounting indigenous 360-degree coverage active electronically scanned array (AESA) radars on Airbus A-330 wide-body jets.
- HAL will develop the AWACS.
- Union Government on 27 Mach 2015 gave its approval to build next-generation Airborne Warning and Control Systems (AWACS).
a) 1 , 2 and 3 only
b) 1, 2 and 4 only
c) 1 and 2 only
d) All of the above
Answer »Answer: (b)
Defence Research and Development Organisation (DRDO) will develop the AWACSs.
Question : 5
Which of the following statements are correct about the ship ‘Amogh’?
- It has been inducted by the Indian Navy
- It is a stealth ship powered by nuclear fuel
- It has facilities like firing gun, rubber boats, GPS system and upgraded radar system.
a) 1 and 3 only
b) 3 only
c) 1 and 2 only
d) All of these
Answer »Answer: (b)
Amogh is a high-speed patrolling ship inducted by Indian Coast Guard into its fleet.
Question : 6
Which is the earliest of the Indian Institute of Technologies established?
a) I.I.T. Mumbai
b) I.I.T. Kanpur
c) I.I.T. Kharagpur
d) I.I.T. Delhi
Answer »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
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