Class XI

The element common to all acids is
  1. hydrogen
  2. carbon
  3. sulphur
  4. oxygen
From which mineral is radium obtained?
  1. . Rutile
  2. Haematite
  3. Limestone
  4. . Pitchblende
Brass gets discoloured in air because of the presence of which of the following gases in air?
  1. Oxygen
  2. Hydrogen sulphide
  3. Carbon dioxide
  4. Nitrogen
Air is a/an
  1. compound
  2. element
  3. electrolyte
  4. mixture
Which of the following are the ingredients of gun metal?
  1. Iron, Zinc, Titanium
  2. . Iron, tin
  3. Iron, Brass, Tin
  4. Copper, Tin
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