Class IX

Iodine-123 is used to
  1. diagnose thyroid problem
  2. image the brain
  3. kill cancer cells
  4. trace the blood flow
When Uranium-238 emits α particles it decays in to
  1. Helium
  2. Carbon
  3. Uranium-235
  4. Thorium-234
D sub-shell can accommodate maximum
  1. 2 electrons
  2. 10 electrons
  3. 14 electrons
  4. 6 electrons
Protium has
  1. one neutron
  2. two neutrons
  3. no neutron
  4. 3 neutrons
Energy of emitted light is equal to
  1. sum of energy levels
  2. difference between energies of orbits
  3. product of energies of orbits
  4. none of above
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