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Water. Science - Water.

Tamil Nadu Board - STD 8 - Science (Tamil - English Medium). 80 questions in this chapter.

Question types

Water. question types

80 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

80
Questions
9
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 1M C Q1 Mark
Which one of the following has the highest latent heat of vaporization?
  • A
     Ice
  • B
    Water
  • ✓
    Steam
  • D
    Metal

Answer: C.

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Q 2M C Q1 Mark
Aquatic plants make use of dissolved …………….. for photosynthesis.
  • A
    $O_2$
  • ✓
    $CO_2$
  • C
    $N_2$
  • D
    $H_2$

Answer: B.

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Q 3M C Q1 Mark
…………….. from the air and sunlight destroy the germs present in water.
  • ✓
    Oxygen
  • B
    Hydrogen
  • C
    Nitrogen
  • D
    none

Answer: A.

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Q 4M C Q1 Mark
The process of adding chlorine in adequate amounts to water is called ……………..
  • A
    Sterilisation
  • B
    Ozonisation
  • C
    Aeration
  • ✓
    Chlorination

Answer: D.

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Q 5M C Q1 Mark
Every litre of sea water contains …………….. grams of dissolved salts.
  • A
    40
  • B
    70
  • ✓
    35
  • D
    10

Answer: C.

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