ICSE/ISC Std 8 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Based on________________the reactions can be classified as exothermic reaction and endothermic reaction.

(A) Absorption or evolution of heat	(B) Physical state
(C) Favoured direction	(D) Chemical properties

Question-2
The digestion of fats gives___________and fatty acid.

(A) Aminoacid	(B) Glucose
(C) Glycerol	(D) Carbon dioxide

Question-3 By the heating of hydrochloric acid and manganese dioxide gives chlorine is a____________.

(A) Oxidation	(B)Reduction
(C)Rearrangement	(D)Combination reaction

Question-4
When silver nitrate solution reacts with sodium chloride solution, a white precipitate formed named as

(A) Silver chloride	(B) Sodium nitrate
(C) Sodium hydroxide	(D) Silver hydroxide

Question-5
A reaction in which an acid reacts with a base(alkali) completely to form a salt and water is called

(A) Precipitation reaction	(B) Neutralisation reaction
(C) Displacement reaction	(D) Combination reaction

Question-6 When electrical potential is applied across the solution the anions move towards___________________.

(A) Anode	(B)Electroyte
(C)Cathode	(D)Solution

Question-7 The reaction in which the reactants and products are in different physical state are called___________________.

(A) Homogeneous reaction	(B)Heterogeneous reaction
(C)Exothermic reaction	(D)Endothermic reaction

Question-8 When ammonia (NH₃)gas is allowed to come in contact with hydrogen chloride(HCl)gas, a solid ___________is obtained.

(A) Ammonium chloride	(B)Ammonium hydroxide
(C)Water(ice)	(D)Hydrogenperoxide(H₂O₂)

Question-9 The process of decomposition of an electrolyte with the help of electricity is called__________________.

(A) Photolysis	(B)Hydrolysis
(C)Electrolysis	(D)Combination reaction

Question-10
Carbon(C) burns in oxygen to form carbondioxide and is a________________reaction.

(A) Exothermic	(B) Endothermic
(C) Photochemical	(D) Electrochemical

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Std 8

ICSE/ISC

Practice in Related Chapters
Hydrogen
Structure of Atom
Transformation of Substances
Metals and nonmetals
Carbon and its Compounds