Prelims Daily MCQs - Science and Technology (26 April)

1. Consider these statements regarding PartNIR

  1. It is an initiative under QUAD.
  2. It aims to ensure water sufficiency in Indo-Pacific region.

Choose correct statement(s).

a) 1 only

b) 2 only

c) Both 1 and 2

d) Neither 1 nor 2.

Ans: d

Exp: It is a partnership of BRICS nations to maximize benefits out of Fourth Industrial Revolution.

2.  Consider these statements.

  1. Bacteriophages are viruses which infect Bacteria.
  2. Virovore is a specie that consume Viruses.

Choose the correct statements.

a) 1 only

b) 2 only

c) Both 1 and 2

d) Neither 1 nor 2

Ans: c

Exp: A virivore (sometimes referred to as virovore) is an organism which obtains energy and nutrients from the consumption of viruses. A bacteriophage is a type of virus that infects bacteria. In fact, the word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure.

3.  Multicore is related to which technology:

a) Computing

b) Artificial Intelligence

c) Biotechnology

d) Nanotechnology

Ans: a

Exp: Multicore technology is related to computing. It refers to the use of multiple processing cores within a single CPU or computer system to improve performance and efficiency.

4. Identify the order of stages of India’s Three Stage Nuclear Power Programme.

  1. Pressurized Heavy Water Reactor.
  2. Fast Breeder Reactor.
  3. Thorium Based Reactor.

Select the correct from code given below.

a) 1-3-2

b) 3-2-1

c) 1-2-3

d) 2-1-3

Ans: c

Exp: In the first stage of the programme, natural uranium fueled pressurised heavy water reactors (PHWR) produce electricity while generating plutonium-239 as by-product. In the second stage, fast breeder reactors (FBRs) would use a mixed oxide (MOX) fuel made from plutonium-239, recovered by reprocessing spent fuel from the first stage, and natural uranium. A Stage III reactor involves a self-sustaining series of thorium-232–uranium-233 fuelled reactors. This would be a thermal breeder reactor, which in principle can be refueled – after its initial fuel charge – using only naturally occurring thorium.

5. Consider following statements regarding Neutrinos.

  1. They have no mass.
  2. They change charge alternatingly every second.
  3. They can exist independently of other particles and can be produced in the lab as well.

Choose the correct statement(s)

a) 1, 2 and 3

b) 1 and 2 only

c) 3 only

d) 1 and 3 only

Ans: c

Exp: Neutrinos have no charge but they’ve very little mass. Neutrinos come from the sun (solar neutrinos) and other stars, cosmic rays that come from beyond the solar system, and from the Big Bang from which our Universe originated. They can also be produced in the lab.

6. Select the number from among the given options that can replace the question mark (?) in the following series.

6, 7, 23, 41, 125, ?

a) 245

b) 345

c) 250

d) 350

Ans: a


7.  A student gets 22 marks more in French than what she got in German. Her German marks are 28% of the sum of her French and German marks. What are her French marks?

a) 18

b) 36

c) 42

d) 54

Ans: b

Exp: If 28% of total mark is German

Percentage of French out of total mark = 100 - 28 = 72%

Difference in the percentage = 72 - 28 = 44

44% corresponds to 22 marks

72% in French corresponds to 72 × 22/44 = 36

Cover the entire CSAT syllabus in 70 hours.

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