UPSC Prelims 2014 GS Paper I · Q37 of 100 General Science medium

With reference to Agni-IV Missile, which of the following statements is/are correct? 1. It is a surface-to-surface missile. 2. It is fuelled by liquid propellant only. 3. It can deliver one-tonne nuclear warheads about 7500 km away. Select the correct answer using the code given below.

  1. (a) 1 only ✓ UPSC's answer
  2. (b) 2 and 3 only
  3. (c) 1 and 3 only
  4. (d) 1, 2 and 3

Why the answer is (a)

• Agni-IV, developed by DRDO and first tested in 2011, is a surface-to-surface intermediate-range ballistic missile (statement 1).

• Statement 2 is wrong: it is a two-stage solid-propellant missile, not liquid-fuelled.

• Statement 3 is wrong: its range is about 3,500–4,000 km with a one-tonne warhead; the 5,000+ km range belongs to Agni-V.

• Hence 1 only, option (a).

Why the other options are wrong

(b) 2 and 3 only
Statements 2 and 3 are wrong: solid fuel and ~4,000 km range.
(c) 1 and 3 only
Statement 3 is wrong: range is about 4,000 km.
(d) 1, 2 and 3
Statements 2 and 3 are wrong.

Asked in the GS Paper I of the UPSC Civil Services Preliminary Examination 2014, held on 24 August 2014. Question and answer key: Union Public Service Commission. Explanation: UPSC Answer Check.

Reading the answer is not the same as getting it right under a clock. Practise this question with UPSC's negative marking, and anything you miss goes into an error notebook until you get it right twice.

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