GENERAL KNOWLEDGE | QUIZ | CHEMISTRY | 8 | QUESTIONS BASED ON CHEMISTRY

DIRECTIONS : Questions based on Chemistry.

36.     Which one of the following is present in the emission from "unleaded petrol"?
      A.  carbon monoxide
      B.  carbon dioxide
      C.  ethylene
      D.  hydrocarbons
 Ans: D.

37.     Which one of the following is used in preparing match sticks?
      A.  Chile saltpeter
      B.  Indian salpetre
      C.  Red phosphorus
      D.  Sodium bicarbonate
 Ans: C.

38.     Chloro-fluro-carbon gases are not used in which of the following?
      A.  aerosol sprays
      B.  fire-extinguishers
      C.  refrigerators
      D.  air-conditioning
 Ans: B.

39.     Among the following elements, which one is not present in a pure sugar?
      A.  Carbon
      B.  hydrogen
      C.  Nitrogen
      D.  oxygen
 Ans: C.

40.     Which one of the following has the highest fuel value?
      A.  hydrogen
      B.  charcoal
      C.  natural gas
      D.  gasoline
Ans: A.