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

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

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

Which of the following represent a double displacement reaction?

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

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

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

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

Which statement is correct about the following reaction?

ZnO + CO Zn + CO₂

The colour of zinc metal is

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

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

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

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

Which of the following is a decomposition reaction?

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

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

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

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

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?

Which of the following reaction is metathesis reaction?

Which of the following is not a balanced chemical equation?

The compound formed by  Hg⁺² and CI^- is

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

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

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

Can we store CuSO₄ in iron container and why?

H₂S burns in air to give