Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 17

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Which of the following is not a physical change?

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Important Questions on Language of Chemistry and Transformation of Substances

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8th CBSE

IMPORTANT

Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 18

Which of the following double displacement reactions is correct?

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 19

The formula of the phosphate of an element R is

{RPO}_{4}

, then the formula of its hydroxide and sulphide, respectively are _____ & _____.

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 20

The molecular weight of a compound which contains a total number of five radicals is

160

, then it is

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 21

The removal of

{CO}_{2}

and

H_{2} O

from atmospheric air by using

KOH

and anhydrous

{CaCl}_{2}

is an example of _____ and _____ changes, respectively.

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 22

Which of the following reactions is a synthesis reaction?

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 23

$Pb ({NO}_{3})_{2} + {Fe}_{2} ({SO}_{4})_{3} \to Fe ({NO}_{3})_{3} + {PbSO}_{4}$ .

Coefficients of lead sulphate and ferric nitrate in the balanced equation of the above reaction are

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 24

Write the names of the salts formed by the reaction of the following:

(i) $Ca$ and ${HNO}_{3}$ and (ii) $Ca$ and $H_{2} {SO}_{3}$ .

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8th CBSE

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Pearson IIT Foundation Chemistry>Chapter 3 - Language of Chemistry and Transformation of Substances>PRACTICE QUESTIONS (COMPETITION WING)>Q 25

A, B and C are the elements such that A on reaction with air produces a dazzling white flame, B is used in rubber industry for hardening and C acts as a conductor with rise in temperature. Then A, B and C are: