Class VII

Valency of bromine is
  1. 2
  2. 1
  3. 3
  4. 4
Medical instruments can be sterilized using
  1. Heat
  2. Boiled water
  3. Radiations
  4. Energy
If we remove electron from outer shell, atom turns
  1. Negative
  2. Positive
  3. Neutral
  4. Anti-negative
Ionic chemical formula for hydrogen is
  1. H-
  2. H+
  3. H-
  4. H+
Radioisotopes are used to trace
  1. Path of elements in bodies
  2. Harmful substances in human body
  3. Cancer cells in human body
  4. Harmful substances in metals
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