science & tech MCQ section 6 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Kalpana Chawla was the first Indian American astronaut to go into space in November 1997 as part of the six-astronaut crew that flew the Space Shuttle Columbia flight STS-87.

Chawla was the first Indian-born woman and the second Indian person to fly in space, following cosmonaut Rakesh Sharma who flew in 1984 on the Soyuz T-11. She died during her second space mission aboard Space Shuttle Columbia in 2003.

Answer: (a)

According to the Indian government, 27 Indian satellites are currently operational. Out of these, 11 are communication satellites, 12 are earth observation satellites, 3 are navigational satellites and 1 is MOM.

Answer: (a)

This initiative became reality after Union Government’s FAME India scheme, which was launched in April 2015.

Answer: (d)

BrahMos is a supersonic cruise missile that is developed jointly by India’s DRDO and Russia’s NPO. The acrynonym of BrahMos is perceived as the confluence of the nations represented by two rivers, the Brahmputra of India and the Moskva of Russia.

Answer: (b)

Heavy water, formally called deuterium oxide (D2O), is a form of water that contains a larger than normal amount of the hydrogen isotope deuterium, (also known as heavy hydrogen). In nuclear reactors, heavy water acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium-238.

Answer: (d)

Compounds including Carbon dioxide, Nitrous oxide, Black carbon, Methane, Sulphur dioxide and CFCs are major contributors to global warming.