SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 23

HARD

10th CBSE

IMPORTANT

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Give the characteristics tests for the following gases :
(i) ${CO}_{2}$ (ii) ${SO}_{2}$ (iii) $O_{2}$ (iv) $H_{2}$

Important Questions on Chemical Reactions and Equations

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10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 24

Which among the following is not a physical change?

EASY

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IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 25

Which among the following is not a chemical change?

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IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 26

Physical changes are

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IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 27

An example of a chemical change is

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IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 28

Which of these will cause a chemical change to occur :

MEDIUM

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SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 29

Which of the following information is conveyed by a chemical equation?

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IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 30

Breaking of lead bromide into lead and bromine is an example of

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10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 31

In the equation

{PbO}_{2} + 4 HCl \to {PbCl}_{2} + 2 H_{2} O + {Cl}_{2}

, the substance undergoing oxidation is