Class VII

For cooking, drinking, washing, bathing and cleaning humans use
  1. Water
  2. Solvents
  3. Clay
  4. Fluids
Elements in air which are responsible for acid rain includes
  1. Oxides of nitrogen
  2. Sulphur dioxide
  3. Both a and b
  4. Carbon dioxide
Medicinal drugs are bitter in taste hence they are added with
  1. Sugar
  2. Salt
  3. Water
  4. Dry ice
A mixture of different types of indicators used for determining acidity of a substance is called
  1. Indicator
  2. pH scale
  3. pH meter
  4. Universal indicator
Solute breaks apart in to smaller particles and mix evenly upon adding it to
  1. Solvents
  2. Solutions
  3. Mixture
  4. Reaction
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