Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 6

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9th CBSE

IMPORTANT

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Define 'formula unit mass'. Give an example.

Important Questions on Atoms and Molecules

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9th CBSE

IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 1

Define an ion. How is an ion formed?

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9th CBSE

IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 2

What is the difference between a cation and an anion ? Explain with examples.

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IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 3

The chemical formula of the carbon dioxide can be-

A. $CO$

B. ${CO}_{2}$

C. $C_{2} O_{3}$

"Enter your correct answer as A, B or C."

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IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 3

The chemical formula of methane is-

A. $C_{2} H_{4}$

B. ${CH}_{4}$

C. $C_{2} H_{2}$

"Enter your correct answer as A, B or C."

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9th CBSE

IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 3

The chemical formula of the sulphur trioxide is-

A. $SO$

B. ${SO}_{2}$

C. ${SO}_{3}$

"Enter your correct answer as A, B or C."

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9th CBSE

IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 3

The chemical formula of the carbon disulphide is-

A. ${CS}_{2}$

B. $CS$

C. $C_{2} S$

"Enter your correct answer as A, B or C."

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IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 4

The chemical formula of the sodium oxide is-

A. $NaO$

B. ${Na}_{2} O$

C. ${NaO}_{2}$

"Enter your correct answer as A, B or C."

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9th CBSE

IMPORTANT

Chemistry for Class IX>Chapter 3 - Atoms and Molecules>Exercise>Q 4

Write the chemical formula of the calcium phosphate.