Class IX

The mixture will appear translucent in case of:
  1. CuSO4 + water
  2. alum + water
  3. sugar + water
  4. starch + water
When a beam of light is passed through a colloidal solution, it gets:
  1. reflected
  2. absorbed
  3. scattered
  4. refracted
Which of the following is a metalloid?
  1. Germanium
  2. Gallium
  3. Carbon
  4. Sodium
After heating common salt and ammonium chloride for a few minutes, we can observe the following on the upper part of the inverted funnel:
  1. reddish brown deposit.
  2. water droplets
  3. a white solid deposit
  4. a yellow gas
Which of the following is not a compound?
  1. marble
  2. washing soda
  3. quick lime
  4. brass
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