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

Answer: (b)

Russia’s Rostech State Corporation has signed 1 billion US dollar deal with Hindustan Aeronautics Limited (HAL) to manufacture 200 Kamov 226T light helicopters.

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: (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).

Answer: (a)

The Government of India launched the Integrated Guided Missile Development Program in 1983 to achieve self-sufficiency in the development and production of a wide range of Ballistic Missiles, Surface Air Missiles etc. Prithvi was the first missile to be developed under the Program. DRDO attempted to build a Surface-to-air Missile under Project Devil.

The Prithvi missile project encompassed developing 3 variants for use by the Indian Army, Indian Air Force and the Indian Navy. Over the years these specifications underwent a number of changes. While the codename Prithvi stands for any missile inducted by India into its armed forces in this category, the later developmental versions are codenamed Prithvi II and Prithvi III.

Prithvi I class was a surface-to-surface missile having a maximum warhead mounting capability of 1,000 kg, with a range of 150 km. It has an accuracy of 10 – 50 metres and can be launched from Transporter erector launchers. This class of Prithvi missiles was inducted into the Indian Army in 1994.