Class VII

Power machines in factories and vehicles for transports are examples of
  1. combustion
  2. thermal decomposition
  3. evaporation
  4. combination
Irreversible changes includes
  1. burning of paper
  2. rusting of iron
  3. corrosion of material
  4. all of them
Random motion of pollen grains in water was caused by tiny water particles which were constantly moving was explained by
  1. Democritus
  2. Aristotle
  3. Robert brown
  4. Albert Einstein
Power machines in factories and vehicles for transports are examples of
  1. combustion
  2. thermal decomposition
  3. evaporation
  4. combination
Chemical changes are
  1. reversible
  2. irreversible
  3. interchangeable
  4. reliable
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