GENERAL KNOWLEDGE | QUIZ | CHEMISTRY | 9 | QUESTIONS BASED ON CHEMISTRY

DIRECTIONS : Questions based on Chemistry.

41.     Which one of the following non metals is not a poor conductor of electricity
      A.  Sulphur
      B.  Selenium
      C.  Bromine
      D.  Phosphorus
 Ans: B.

42.     Which one of the following is not a chemical change ?
      A. Burning of coal in air
      B. Fermentation of sugarcane juice
      C. Cracking of petroleum
      D. Crystallization of table salt from sea water
 Ans: D.

43.     Which metal remains in the liquid form under normal conditions?
      A.  zinc
      B.  radium
      C.   uranium
      D.  mercury
 Ans: D.

44.     The rusting of iron nail
      A.  decrease its weight
      B.  increase its weight
      B.  does not affect weight
      D.  doesnotaffect weight but iron is reduced
 Ans: B.

45.     For which one of the following is the density maximum?
      A.  chloroform
      B.  benzene
      C.  water
      D.  ice
Ans: C.