science & tech MCQ section 2 MCQ Questions & Answers Detailed Explanation

Answer: (d)

Prime Minister at the Pravasiya Bhartiya Divas held 2009, at Chennai had inaugurated a portal-Global Indian Network of Knowledge.

The network is being developed by Tata Consultancy Services (TCS).

Answer: (c)

Graphene is a two-dimensional material comprising of sheets of carbon atoms and is one of the the strongest, most lightweight and flexible materials

Answer: (c)

A minor planet is a term used to describe an astronomical object that is neither a dominant planet nor a comet and thus includes the dwarf planets that orbit around the Sun.

Minor planet 4538 Vishyanand was discovered on 10 October 1988 by Japanese astronomer Kenzo Suzuki which is located somewhere between Mars and Jupiter.

Answer: (b)

Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between cooler deep and warmer shallow or surface ocean waters to run a heat engine and produce useful work, usually in the form of electricity.

However, the temperature differential is small and this impacts the economic feasibility of ocean thermal energy for electricity generation. The most commonly used heat cycle for OTEC is the Rankine cycle using a low-pressure turbine.

Answer: (a)

The Bhabha Atomic Research Centre (BARC) is India’s premier nuclear research facility based in Trombay, Mumbai. BARC is a multi-disciplinary research centre with extensive infrastructure for advanced research and development covering the entire spectrum of nuclear science, engineering and related areas.

BARC’s core mandate is to sustain peaceful applications of nuclear energy, primarily for power generation. It manages all facets of nuclear power generation, from theoretical design of reactors, computerized modelling and simulation, risk analysis, development and testing of new reactor fuel materials, etc.

It also conducts research in spent fuel processing, and safe disposal of nuclear waste. Its other research focus areas are applications for isotopes in industries, medicine, agriculture, etc.

Answer: (c)

The ship Apoorva has been indigenously designed and built by Cochin Shipyard Ltd at Surat, Gujarat. Interceptor Boat C-421 had been designed and constructed by Larsen & Toubro (L&T) Limited.