ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 42

EASY

10th CBSE

IMPORTANT

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Rahul took some zinc granules in a test-tube and added dilute $H C l$ to it. He observed that the colour of zinc granules changed to

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Important Questions on Chemical Reactions and Equations

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 11

2 K C {l O}_{3} (s) \to K C l (s) + 3 O_{2} (g

) is a/an:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 13

For the decomposition of silver bromide, energy is required in the form of:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 14

Heat is evolved in:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 15

When zinc reacts with dilute hydrochloric acid, gas evolved is:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 47

Products obtained as a result of double displacement reaction using

{B a C l}_{2}

and

N a_{2} S O_{4}

are:

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10th CBSE

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ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 48

On heating crystals of ferrous sulphate, products obtained are:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 51

Ardhita added zinc granules in iron sulphate solution, and made a few observations. Identify the incorrect observation.
(i) Pale green solution becomes colourless.
(ii) Black deposit seen on zinc granules.
(iii) Red deposit seen on zinc granules.
(iv) Colourless solution becomes pale green.

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 1 - Chemical Reactions and Equations>Value Based Questions>Q 52

Shashank was asked to carry out a displacement reaction which would show the following:
(i) Formation of colourless solution
(ii) Black deposits
The reactants he should use are: