The valency of nitrogen in nitrogen dioxide $\left({\mathrm{NO}}_2\right)$is _____.

Important Questions on Specimen Paper 1 (Solved) Paper 2 (Chemistry)

MEDIUM

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 6

An alkaline earth metal of the third period is:

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 6

A salt that leaves yellow residue on heating is:

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9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 6

Volume temperature relationship is given by:

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9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 6

Calculate the percentage of nitrogen in Urea $\left\{{\left({\mathrm{NH}}_2\right)}_2\mathrm{CO}\right\}$.

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 7

Under what conditions do coke react with steam to give water gas?

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9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 7

How is hydrogen obtained from alkali? Write any two equations.

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9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 7

State law of conservation of mass.

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9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 11 - Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Specimen Paper 1 (Solved) Paper 2 (Chemistry)>Q 7

A certain mass of washing soda crystals is exposed to the atmosphere. A loss in weight was noticed. How can you account for this?