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

Answer: (a)

Statement 3 is incorrect as the thickness of BD is 1.1 mm while that of DVD is 1.2 mm.

The difference lies in capacity so statement 2 is correct. As far as statement 1 is concerned.

Answer: (d)

Agni-II is a medium-range ballistic missile (MRBM) with two solid-fuel stages and a Post Boost Vehicle (PBV) integrated into the missile’s Re-entry Vehicle (RV). When the Agni-II was first launched, then Defence Minister George Fernandes indicated that the maximum range of the Agni-II was 3,000 km.

Since then, ranges from 2,000 km to 2,500 km have been stated, while Dr Kalam, at Aero India ’98, stated that Agni-II had a maximum range of 3,700 km. The Agni’s manoeuvring RV is made of a carbon-carbon composite material that is light and able to sustain high thermal stresses of re-entry, in a variety of trajectories.

The Ghauri-II is a medium-range ballistic missile (MRBM). A longer ranged variant of the GhauriI, it was developed by increasing the length of the motor assembly and using improved propellants. The Ghauri-II missile has a maximum range of 2,000 km.

Answer: (b)

The United States-India Peaceful Atomic Energy cooperation Act, 2006 was named after the chairman of the House committee on international relations Henry J. Hyde.

The agreement is also known as the 123 agreement. Under the agreement, India agreed to separate its civil and military nuclear facilities and place all its civil nuclear facilities under IAEA (International Atomic Energy Agency) safeguards.

Answer: (b)

It has been developed by the DRDO.

Answer: (d)

India has declared ‘no-first-use’ policy and is in the process of developing a nuclear of doctrine based on credible minimum deterrence. In August 1999, the Indian government released a draft of the doctrine. The authority to release nuclear weapons for use is on the President of India.

Answer: (b)

Astrosat is India’s first dedicated multi-wavelength space observatory and one of the major scientific mission of ISRO after the highly acclaimed Chandrayaan-I and Mangalyaan. This is third time an Indian rocket has launched seven satellites in a single mission. In 2008, ISRO had launched 10 satellites using PSLV in one go including India’s Cartosate2A satellite.