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  9. Q51

APSC CCE 2018 · Question 51 of 92

How does calcium carbide ripen mangoes?

Science

  1. AIt reacts with moisture and releases ethylene.
  2. BIt reacts with moisture and releases ethyne.Correct
  3. CIt reacts with moisture and releases acetaldehyde which in turn releases ethylene.
  4. DIt reacts with starch and releases acetylene.

Answer: B. It reacts with moisture and releases ethyne.

Official answer key verified. Detailed explanation coming soon.

Source: APSC CCE (Preliminary) Examination 2018 — General Studies, held 30 December 2018

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