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

Answer: (c)

In a nuclear disaster, the main focus is to cool the nuclear reactor. Pumping of water to the reactors and use of boric acid are some of the options.

Answer: (c)

The agreement, which was signed on December 31st, 1988 and entered into force on January 27th, 1991.

Answer: (c)

The waterline is the line where the hull of a ship meets the surface of the water, in concept or reality.

Specifically, it is also the name of a special marking, also known as the national Load Line or Plimsoll Line (positioned amidships), that indicates the draft of the ship and the legal limit to which a ship may be loaded for specific water types and temperatures in order to safely maintain buoyancy, particularly with regard to the hazard of waves that may arise.

The purpose of a load line is to ensure that a ship has sufficient freeboard (the height from the water line to the main deck) and thus sufficient reserve buoyancy (e.g., the enclosed volume created by the area between the waterline and the main deck).

The freeboard of commercial vessels is measured between the lowest point of the uppermost continuous deck at the side and the waterline and this must not be less than the freeboard marked on the Load Line Certificate issued to that ship.

Answer: (a)

Tarapur Atomic Power Station (TAPS), located in Tarapur in Maharashtra, was initially constructed with two boiling water reactor (BWR) units of 210 MWe each initially by Bechtel and GE under the 1963 123 Agreement between India, the United States, and the International Atomic Energy Agency.

Answer: (d)

Airborne Early Warning and Control System is an airborne radon system designed to detect aircraft at long ranges. AEWACS-Phalcon was inducted in the Indian Air Force in 2009.

Answer: (c)

Yuri Alekseyevich Gagarin was a Soviet pilot and cosmonaut. He was the first human to journey into outer space and the first to orbit the earth, when his Vostok spacecraft completed an orbit of the Earth on 12 April, 1961. Vostok 1 marked his only spaceflight, but he served as backup crew to the Soyuz 1 mission (which ended in a fatal crash).