Class IX

Gram atomic mass of Zn is
  1. 23g
  2. 12g
  3. 63.54g
  4. 56.67g
If one mole of carbon contains x atoms then number of atoms in 12g of Mg are
  1. x
  2. 0.5x
  3. 2x
  4. 1.5x
Number of atoms of hydrogen in 2 moles of NH3
  1. 5 * 1023
  2. 3.01 * 1023
  3. 3.61 * 1024
  4. 4 * 1023
A free radical has
  1. odd no. of electrons
  2. even no. of electrons
  3. A and B both
  4. none of above
Empirical formula for water is
  1. CO2
  2. HO
  3. H2
  4. H2O
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