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8th ICSE
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Valency of mercury is: 

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Important Questions on Language of Chemistry

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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 7
Which one of these is a monoatomic ion? 
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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 8
Which one of these is a not a polyatomic ion? 
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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 9
The chemical formula of sodium carbonate is:
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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 10
Which of the following is a balanced chemical equation?
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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 11
Which of the following is not a balanced equation?
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8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 12

What does coefficient x and y stand for in the following equation:

Ca+xH2O→yCa(OH)2+H2

MEDIUM
8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 4
An atom or a group of atoms that gains electron(s) forms a _____ ion.
EASY
8th ICSE
IMPORTANT
Lakhmir Singh's Science - Chemistry>Chapter 5 - Language of Chemistry>EXERCISES>Q 3
One molecule of water is represented as H2O.