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9th CBSE
IMPORTANT
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Which one is the correct formula of aluminium sulphate?

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Important Questions on Atoms and Molecules

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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 3
The molar mass of H2O is 18 g/mol. What is the number of moles in 90 g water? 
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 4
What is the ratio of the number of molecules in 14 g CO and 28 g N2
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 5
Which one of the following is a trivalent anion?
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 6
Which one of the following is a monovalent cation?
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 7
Which one of the following has more number of molecules?
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 8
The amount of a chemical substance is reported as
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 9
The molar mass of O2 is 32 grams per mole. What is the number of moles in 10 grams of oxygen?
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9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQ)>Q 10
One mole of N2 is equal to which one of the following?