Class IX

On contact with oxygen, Rubidium forms
  1. normal oxide
  2. per oxide
  3. super oxide
  4. none of above
Elements which have properties of metals and non-metals are
  1. amorphous
  2. crystalline
  3. metalloids
  4. none of above
Non-metals are poor conductors of
  1. heat
  2. electricity
  3. both A and B
  4. none of above
Metals difficult to oxidize are called
  1. weak metals
  2. strong metals
  3. noble metals
  4. none of above
Most metallic among following is
  1. Na
  2. K
  3. Al
  4. B
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