Class VII

If mass of a substance will be lowered its density will be
  1. increased
  2. decreased
  3. same
  4. constant
A liquid cannot be
  1. compressed
  2. change in to any shape
  3. boiled
  4. move
Particle model of matter states that tiny discrete particles are
  1. composing a matter
  2. in random movement
  3. both a and b
  4. complex
States of matter in which it exists includes
  1. solid
  2. liquid
  3. gas
  4. all of them
Physical state of matter is changed with change in
  1. temperature
  2. pressure
  3. both a and b
  4. volume
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