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MPPSC (MP PCS) 2017 · Question 68 of 100

The ‘laughing gas’ is

science

  1. Ahydrogen peroxide
  2. Bnitrous oxideCorrect
  3. Ccarbon monoxide
  4. Dsulphur dioxide

Answer: B. nitrous oxide

Explanation

Nitrous oxide (NO2) is called haas or laughing gas. It is also used as an inactive during surgery 23 69.Which of the following is also used as a lubricant? A. Cuprite B. Graphite C. Haematite D. Cryolite

Source: MPPSC Prelims 2017 GS Paper-I (evidyarthi English solved compilation; answers per compilation)

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