EASY
8th ICSE
IMPORTANT
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Sodium oxide dissolves in water to form . (sodium chloride / sodium hydroxide)

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Important Questions on Water

MEDIUM
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q A
_____substances can absorb moisture from the atmosphere at room temperature.
EASY
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q A
Temporary hardness of water can be removed by _____ (boiling/sedimentation)of water.
EASY
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q C
Which of the following has the least percentage of water?
EASY
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q C
Seawater is considered unfit for drinking because _____.
MEDIUM
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q C
Which of the following is not true for pure water?
MEDIUM
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q C
When metallic oxides dissolved in water they form _____.
EASY
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q C
Permanent hardness of water is due to the presence of _____.
EASY
8th ICSE
IMPORTANT
Unravelling Science Chemistry>Chapter 5 - Water>Exercise>Q D
Pure water is a good conductor of electricity_____.