Class XII

Leaching of gold is done by
  1. Metal silicate
  2. Metal hydroxide
  3. Metal sulphide
  4. Metal cyanide
For obtaining high purity metals, which of the following methods of refining is preferred?
  1. Zone refining
  2. Poling
  3. Liquation
  4. Electrolytic method
The second most abundant metal on earth’s crust is
  1. Copper
  2. Aluminium
  3. Iron
  4. Zinc
Which of the following ore contains both Mg and Ca?
  1. Gypsum
  2. Talc
  3. Epsomite
  4. Dolomite
Calamine is an ore of
  1. Lead
  2. Magnesium
  3. Calcium
  4. Zinc
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP