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

Question : 6

Which of the following pairs are correctly matched? Substance/mineral Use

  1. Graphite electrode Vulcanization of rubber
  2. Limestone Smelting of iron
  3. Aluminium Mixing with other metals to provide strength and lightness
Codes:

a) 1 and 3 only

b) 2 and 3 only

c) 1 and 2 only

d) All of these

Answer: (b)

Graphite electrode is used in melting of steel. Recently, the Indian government has imposed antidumping duty on import of graphite electrode to protect domestic industry.

Question : 7

Gaia satellite which was launched in 2013 has reached its intended location. The satellite was launched by

a) ISRO

b) China National Space Administration

c) ESA

d) NASA

Answer: (c)

Gaia satellite, the billion star surveyor was launched by ESA in 2013.

Question : 8

Which of the following statements are correct about Dongfeng-31B?

  1. It has long range missile with a reach of 10,000 km.
  2. It can carry multiple nuclear warheads.
Codes:

a) 2 only

b) Both 1 and 2

c) 1 only

d) Neither 1 Nor 2

Answer: (b)

The missile is a variant of Dongfeng-31 A with same range but improved capability in carrying warheads.

Question : 9 [SSC CGL 2015]

Which one of the following is an indigenously built light combat aircraft of India?

a) Vikrant

b) Vikrant

c) Arjun

d) Akash

Answer: (b)

Tejas is an indigenously-built Light Combat Aircraft (LCA) of the Indian Air Force. It s a single-seat, single-jet engine, multi-role light fighter developed by Hindustan Aeronautics Limited. It came from the Light Combat Aircraft (LCA) programme, which began in the 1980s to replace India’s ageing MiG-21 fighters. Later, the LCA was officially named “Tejas.”

Question : 10

What is the name of the world’s first womb transplant baby?

a) Margaret

b) Louis

c) Glenn

d) Vincent

Answer: (d)

Vincent, the world’s first womb transplant baby was born to a Swedish family.

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