science & tech MCQ section 1 MCQ Questions & Answers Detailed Explanation

Answer: (c)

Central Building Research Institute: Roorkee, Uttarakhand, Central Arid Zone Research Institute: Jodhpur, Rajasthan, Central Drug Research Institute: Lucknow, Uttar Pradesh, and Central Institute of Mining and Fuel Research: Dhanbad, Bihar.

Answer: (a)

R-22 gas is another name for Chloro-di-fluoromethane.

Answer: (b)

A geostationary orbit, or Geostationary Earth Orbit (GEO), is a circular orbit 35,786 kilometres above the Earth’s equator and following the direction of the Earth’s rotation.

An object in such an orbit has an orbital period equal to the Earth’s rotational period (one sidereal day) and thus appears motionless, at a fixed position in the sky, to ground observers.

Communications satellites and weather satellites are often given geostationary orbits, so that the satellite antennas that communicate with them do not have to move to track them, but can be pointed permanently at the position in the sky where they stay.

A geostationary orbit is a particular type of geosynchronous orbit.

Answer: (c)

The CTBT bans all nuclear explosives in all environments, for military or civilian purposes. It was adopted by the United Nations General Assembly on 10th September 1996 but it has not entered into force.

The act underlines that the treaty will come into force 180 days after the 44 states listed in Annexure - 2 of the treaty have ratified it.

Annexure - 2 states are those states that participated in CTBT’s negotiations.

Answer: (b)

The index will measure eight major pollutants in major cities based on real time monitoring.

Answer: (a)

Agni-III is an intermediate-range ballistic missile developed by India as the successor to Agni-II. It has a range of 3,500 km- 5,000 km and is capable of engaging targets deep inside neighbouring countries.

The missile’s Circular error probable (CEP) is within 40 meters range, which makes it the most sophisticated and accurate ballistic missile of its range class in the world. Agni III—an intermediate-range ballistic missile—was developed by India as the successor to Agni-II. Designed by the Indian government’s Defence Research and Development Organisation, Agni III is a two-stage ballistic missile that is capable of nuclear weapons delivery.

It was designed and developed by the Advanced Systems Laboratory (ASL), a unit of DRDO, which was formed in September 2001 with its main objective being the development of large-sized rocket motors.

Note: Agni-VI is an intercontinental ballistic missile reported to be in the early stages of development by India. It will be capable of being launched from submarines as well as from land and will have a strike range of 8,000–10,000 km with MIRVed warheads.

Agni-V is a solid-fueled intercontinental ballistic missile (ICBM) developed by the Defence Research and Development Organization (DRDO) of India. It will greatly expand India’s reach to strike targets more than 5,500 km away.

Agni-IV is the fourth in the Agni series of missiles which was earlier known as Agni II prime. Its full range of 4000 km