science & tech MCQ section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (b)

Baryon are sub-atomic particles. CERN scientists have recently discovered two new heavyweight subatomic particles belonging to the family of baryon

Answer: (a)

Staphefekt is a new drug that does not contain the antibiotics

Answer: (a)

Dr A.P.J. Abdul Kalam is the undisputed father of India’s missile program. He has breathed life into ballistic missiles like the Agni and Prithvi, which put China and Pakistan well under India’s missile range. It is too exhausting to track Dr Abdul Kalam’s achievements to date. In the 60's and 70's he was a trailblazer in the space department.

In the ’80s he transformed the moribund Defence Research and Development Laboratory in Hyderabad into a highly motivated team. By the ’90s Kalam emerged as the czar of Indian science and technology and was awarded the Bharat Ratna.

Answer: (a)

A fast reactor needs no moderator to slow down the neutrons at all, taking advantage of the fast neutrons producing a greater number of neutrons per fission than slow neutrons. For this reason ordinary liquid water, being a moderator as well as a neutron absorber, is an undesirable primary coolant for fast reactors.

Answer: (c)

Chandrayaan-1 was India’s first unmanned lunar probe. It was launched by the Indian Space Research Organisation in October 2008 and operated until August 2009.

The mission included a lunar orbiter and an impactor. India launched the spacecraft with a modified version of the PSLV, PSLV C11 on 22 October 2008 from Satish Dhawan Space Centre, Sriharikota, Nellore District, Andhra Pradesh.

Note: Chandrayaan-2 is India’s second lunar exploration mission after Chandrayaan-1.

Developed by the Indian Space Research Organization, the mission is planned to be launched to the Moon by a Geosynchronous Satellite Launch Vehicle. The ISRO is planning to launch Chandrayaan-2 in the first quarter of 2018.