Class IX

1 u or 1 amu means
  1. Mass of O-16 atom
  2. Mass of C-12 atom
  3. 1/12th mass of C-12 atoms
  4. Mass of Hydrogen molecule
Who laid the foundation of laws of Chemical Combination:
  1. Proust
  2. Dalton
  3. Lavoisier
  4. Democritus
Which one of the following will have the maximum charge/mass ratio?
  1. Proton
  2. Neutron
  3. Electron
  4. α-particle
The number of electrons in the outermost shell in the atom of an inert element is
  1. 0
  2. 1
  3. 2
  4. 8
The percentage of Hydrogen in H₂O molecule is
  1. 5.55
  2. 11.11
  3. 44.45
  4. 88.89
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