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Science & Technology

923 questions asked in UPSC Prelims.

2006 · Q6Science & TechnologyHealth & Diseasesmoderate

Consider the following statements: 1. Caffeine, a constituent of tea and coffee, is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascorbic acid is essential for the formation of bones and teeth. 4. Citric acid is a good substitution for ascorbic acid in our nutrition. Which of the statements given above are correct?

  1. (a)1 and 2 only
  2. (b)1, 2 and 3 only
  3. (c)3 and 4 only
  4. (d)1, 2, 3 and 4
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Official answer(b) 1, 2 and 3 only

2006 · Q28Science & TechnologyEnergy & Environmentmoderate

In which one of the following areas did the Indira Gandhi Center for Atomic Research make significant progress in the year 2005?

  1. (a)Re-processing the uranium-plutonium mixed carbide fuel of the Fast Breeder Test Reactor
  2. (b)New applications of radio-isotopes in metallurgy
  3. (c)A new technology for production of heavy water
  4. (d)A new technology for high-level nuclear waste management
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Official answer(a) Re-processing the uranium-plutonium mixed carbide fuel of the Fast Breeder Test Reactor

2006 · Q61Science & TechnologyLogical Reasoning & Puzzlesmoderate

P, Q, R, S and T reside in a 5-storeyed (Ground + 4) building, and each of them resides on a separate floor. Further, 1. T does not reside on the topmost floor. 2. Q does not reside on the ground floor. 3. S resides on one storey above that of P and one storey below that of R. To know as to which of the 5 persons resides on the ground floor which of the above statements are sufficient / insufficient?

  1. (a)1 and 3 are sufficient
  2. (b)2 and 3 are sufficient
  3. (c)1, 2 and 3 are sufficient
  4. (d)1, 2 & 3 are insufficient
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Official answer(d) 1, 2 & 3 are insufficient

2006 · Q64Science & TechnologySpace Technology & Astronomymoderate

Consider the following statements in respect of India's advanced satellite INSAT–4A : 1. INSAT–4A was launched in December, 2005 from New Mexico. 2. The European commercial launch service provider Arianespace was associated with the launch of INSAT–4A. 3. Tata-Sky—a digital cable service provider is associated with DTH television broadcasting services from INSAT-4A. Which of the statements given above are correct?

  1. (a)1, 2 and 3
  2. (b)1 and 2, only
  3. (c)2 and 3, only
  4. (d)1 and 3, only
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Official answer(c) 2 and 3, only

2006 · Q77Science & TechnologyLogical Reasoning & Puzzlesmoderate

Each of the six faces of a cube is numbered by one of the six digits from 1 to 6. This cube is shown in its four different positions in the figures I, II, III and IV. Consider the following statements: 1. Figures II and III are sufficient to know as to which face is opposite to the face numbered 6. 2. Figures II and III are sufficient to know as to which face is opposite to the face numbered 4. 3. Figures I and IV are sufficient to know as to which face is opposite to the face numbered 4. Which of the statements given above are correct? The original figure is not available for this question.

  1. (a)1 and 3, only
  2. (b)1 and 2, only
  3. (c)2 and 3, only
  4. (d)1, 2 and 3
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Official answer(d) 1, 2 and 3