Chemistry General Knowledge Questions and Answers

21. The percentage of gold in 18 carats gold is
  A.  25%
  B.  50%
  C.  75%
  D.  91.6%
Answer
Ans: C
75%
22. Scattering of light takes place in
  A.  Electroplating
  B.  Electrolysis
  C.  Solution of electrolyte
  D.  Colloidal solution
Answer
Ans: D
Colloidal solution
23. The enzymes are killed
  A.  During chemical reaction
  B.  At low temperature
  C.  At a very high temperature
  D.  Under atmospheric pressure
Answer
Ans: C
At a very high temperature
24. The transition temperature between two allotropic forms of sulphur is
  A.  369 K
  B.  443 K
  C.  673 K
  D.  388 K
Answer
Ans: A
369 K
12345 678

Page 6 of 8