Question types

Water question types

140 questions across 8 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

140
Questions
8
Question groups
5
Question types
Sample Questions

Water questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Water fit for human consumption and drinking purposes is called ____________
  • A
    distilled water
  • potable water
  • C
    rain harvested water

Answer: B.

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Q 2MCQ1 Mark
Chlorination of water is done
  • to kill the germs
  • B
    to remove the suspended impurities
  • C
    to remove the dissolved impurities
  • D
    none of the above

Answer: A.

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Q 4MCQ1 Mark
Common salt is obtained from sea water by
  • A
    distillation
  • B
    crystallisation
  • evaporation
  • D
    sublimation

Answer: C.

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If potassium nitrate is added to water in a beaker to give a homogeneous mixture, then potassium nitrate is referred to as the __________, water as the __________, and the homogeneous mixture as the _______.(solution/ solute/solvent/saturated solution)
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Water is added to the atmosphere by _____________and _____________.(burning of fossil fuels/condensation of vapour/ respiration by living organisms/photosynthesis)
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________ is the purest form of water. It may dissolve gases like ________forming weak acids(sea water/ lake water/rain water ; chlorine/ammonia/carbon dioxide)
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Q 33TRUE / FALSE1 Mark
Purification of water is carried out to remove – dissolved gases e.g. carbon dioxide and dissolved minerals like magnesium salts.
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Q 34TRUE / FALSE1 Mark
If ‘X’ g. of solute is added to 100 g. of water at t°C and the solution formed is a saturated solution, then ‘X’ g. is the solubility of the solute.
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Match the statements in List I, 1-10 with their correct answer in List II, A to J.
1. A water-borne diseaseA: Seawater
2. Existence of water between 0°C and 100°CB: Dysentery
3. Taste in water is due toC:Liquid state
4. The most impure form of waterD: Dissolved gases and minerals
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Match the statements in List I, 1-10 with their correct answer in List II, A to J.
1. A solution which can dissolve more of solute at a given temperatureA: A preferred place for an organism
2. Water as a habitat for marine lifeB: Unsaturated solution
3. A water-borne diseaseC: Liquid state
4. Existence of water between 0°C and 100°CD: Dysentery
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Match the statements in List I, 1-10 with their correct answer in List II, A to J.
1. Sodium carbonate and waterA:  Immiscible solutionr
2. Chemical used in sedimentation during purification of waterB: Aqueous solution
3. vapourisationC: Alum
4. Kerosene and waterD: Liquid to a gaseous state
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