Maharashtra (English Medium) Std 10 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The reactions a precipitate is formed by exchange of ions between the reactants are called

(A) Double displacement reactions	(B) Combination reactions
(C) Decomposition reactions	(D) Displacement reactions

Question-2
The formula of potassium chromate is

(A) K₂CrO₄	(B) K₂Cr₂O₇
(C) KCrO₆	(D) K₂Cr₂O₈

Question-3
The slow process of decay of metal due to the effect of air, acids and moisture on it called

(A) Combination	(B) Displacement
(C) Reduction	(D) Corrosion

Question-4
What is the product we get while neutralisation reaction taking place?

(A) Precipitate	(B) Salt
(C) Colloids	(D) Mixtures

Question-5
The product in the reaction 2Cu + O_{2 →} 2CuO is?

(A) Copper	(B) Oxygen
(C) Air	(D) Copper oxide

Question-6
CaCO₃₍₃₎ → CaO_(g) + CO_2(g) . This is an example of?

(A) Combination reaction	(B) Redox reaction
(C) Decomposition reaction	(D) Double decomposition reaction

Question-7
The pale yellow silver bromide turns grey when exposed to?

(A) Heat	(B) Catalyst
(C) High presure	(D) Sunlight

Question-8
In which reaction the rancidity of oil is taking place?

(A) Reduction	(B) Neutralization
(C) Oxidation	(D) Redox reaction

Question-9
Storage of food in airtight containers prevents?

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

Question-10
When two or more substances combine to form single product , then the reaction is called

(A) Condensation reaction	(B) Combination reaction
(C) Decomposition reaction	(D) Double decomposition reaction

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Std 10

Maharashtra (English Medium)

Practice in Related Chapters
School of Elements
Understanding Metals and Non metals
The Acid Base Chemistry
The Magic of Chemical Reactions