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Chemical Reactions And Equations - MCQ Test, Class 10 Science - Class 10 MCQ


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30 Questions MCQ Test - Chemical Reactions And Equations - MCQ Test, Class 10 Science

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Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 1

Which of the following is not a decomposition reacion?

Detailed Solution for Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 1

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 2

Which two gases are released on heating lead nitrate?

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Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 3

What happens when Hydrogen combines with oxygen in the presence of an electric current?

Detailed Solution for Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 3

H2 + O2 → H2O

When electric current is passed, we get water as by product. This is basis of fuel cell. At the cathode, the electrons and the hydrogen ions combine with oxygen to make water, which then flows out of the cell.

A fuel cell takes in hydrogen and oxygen and produces electricity, with water and heat as byproducts.

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 4

Which of the statement about the reaction below are incorrect? 2PbO(s)+C(s)→2Pb(s)+CO2(g)

(i) lead is getting reduced,

(ii) Carbon dioxide is getting oxidised,

(iii) Carbon is getting oxidised,

(iv) Lead oxide is getting reduced

Detailed Solution for Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 4

2PbO(s) + C(s) → 2Pb(s) + CO2(g)

Reduced substance – Pb
Pb2+ + 2e– → Pb

Pb gains electrons or its oxidation number is reduced.

Oxidized substance – C
C → C2+ + 2e–

C loses electrons or its oxidation number is increased.

Since oxygen is being removed and the removed oxygen from Lead is added to the elemental Carbon, lead is getting reduced and ccarbon dioxide is getting oxidized.

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 5

Match the following with correct response.

(1) Oxidation        (A) Gain of electron

(2) Reduction       (B) Electron accepting species

(3) Reducing agent     (C) Electron losing species

(4) Oxidising agent    (D) Loss of electron

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 6

Which of the following represent a double displacement reaction?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 7

Some crystals of copper sulphate were dissolved in water. The colour of the solution obtained would be

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 8

Mg ribbon burns with a dazzling flame in air (oxygen) and changes into a white substance, Magnesium oxide. Magnesium is

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 9

What happens when dilute HCl is added to iron fillings? Select the correct answer.

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 10

Match the following with correct response.

(1) Chemical change (2) Physical change (3) Exothermic (4) Endothermic

(A) Energy releasing (B) Rusting of iron (C) Energy absorbed (D) Dissolution of sugar or salt in water

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 11

Which statement is correct about the following reaction?

ZnO + CO Zn + CO2

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 12

The colour of zinc metal is

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 13

The reactions in which more reactive element can displace less reactive element from a compound are called

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 14

Colour of copper sulphate solution changes when an iron nail is dipped in it because of

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 15

Match the following with correct response.

(1) Gain of hydrogen (2) Loss of hydrogen (3) Unpleasant taste and foul small in fatty food (4) Eating away of metal in the presence of air and moisture

(A) Reduction (B) Rancidity (C) Oxidation (D) Corrosion

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 16

Fe2O3 + 2Al Al2O3 + 2Fe This reaction is an example of –

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 17

Which of the following is a decomposition reaction?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 18

Which one of the following will be required to identify the gas evolved when diluted HCl reacts with zinc metal?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 19

Decomposition of ferrous sulphate into Fe2O3,SO2 and SO3 occurs in the presence of

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 20

What happens when copper metal is added to silver nitrate solution?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 21

Match the following with correct response.

(1) Reaction in which two substances combine to form new product

(2) substance split to form two or more simple substance

(3) More reactive metal displaces less reactive metal

(4) Loss or gain of electrons occurs

 

(A) Displacement reaction

(B) Combination Reaction

(C) Redox reaction
(D) Decomposition

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 22

When Iron nails are added to an aquous solution of copper sulphate, a chemical change occurs, which of the following is not true about this reaction?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 23

Which of the following reaction is metathesis reaction?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 24

Which of the following is not a balanced chemical equation?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 25

The compound formed by  Hg+2 and CI- is

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 26

Fe2O3+2Al→Al2O3+2Fe This reaction is an example of -

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 27

Match the following with correct response.

(1) Quick lime is added to water (2) Formula for rust (3) Silver tarnishing (4) Pop sound

(A) Ca(OH)2       (B) H2S gas (C) Fe2O3.xH2O        (D) H2 gas

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 28

Pieces of Zn metal are added to four different test tubes containing different solutions. In which test tube no change is observed?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 29

Can we store CuSO4 in iron container and why?

Chemical Reactions And Equations - MCQ Test, Class 10 Science - Question 30

H2S burns in air to give

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