HARD
9th ICSE
IMPORTANT
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Cl-, F-, CO3-2 and SO42- are  radicals. (acidic / basic)

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Important Questions on The Language of Chemistry

HARD
9th ICSE
IMPORTANT
The chemical formula of sodium chlorate is NaClO3 then the chemical formula of sodium hypochlorite is 
MEDIUM
9th ICSE
IMPORTANT
Oxygen, nitrogen and platinum are respectively
MEDIUM
9th ICSE
IMPORTANT
F-, Cl-, K+ and Na+ are the examples of 
HARD
9th ICSE
IMPORTANT
Which of the following is balanced chemical equation?
HARD
9th ICSE
IMPORTANT

Match the following columns.

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HARD
9th ICSE
IMPORTANT

The symbol 'S' for sulphur but 'Na' for sodium and 'Si' for silicon, Explain it.

MEDIUM
9th ICSE
IMPORTANT
Write the name of two elements, which show variable valency.