Chemistry General Knowledge Questions and Answers

29. The process of losing water of crystallization from a hydrated salt when exposed to air is called as
  A.  Dehydration
  B.  Hydration
  C.  Hardening
  D.  Efflorescence
Answer
Ans: D
Efflorescence
30. In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?
  A.  Aluminium
  B.  Copper
  C.  Iron
  D.  Titanium
Answer
Ans: D
Titanium
31. When acetone is reduced with zinc amalgam and HCL, it gives
  A.  Propan-1-ol
  B.  Propane
  C.  Propan-2-ol
  D.  Propan-2-al
Answer
Ans: C
Propan-2-ol
1234567 8

Page 8 of 8