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


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Question-1
Electroplating is done to prevent metals from

(A) Looking bright	(B) Corrosion
(C) Sublimating	(D) Further reaction

Question-2 Any process which involves the addition of oxygen or any other electronegative radical or the removal of hydrogen or any other electropositive radical is called______________reaction.

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

Question-3
Brass objects are protected against corrosion by chromium

(A) Electrolysis	(B) Photolysis
(C) Electroplating	(D) Hydrolysis

Question-4
The substance which can bring about reduction of other substance are called

(A) Reducing agent	(B) Oxidising agent
(C) Dehydrogenating agent	(D) Oxygenating agent

Question-5 When electrical potential is applied across the solution the anions move towards___________________.

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

Question-6
The substance which give highly conducting solutions in water are called

(A) Solvent	(B) Strong electrolyte
(C) Weak electrolyte	(D) Solution

Question-7
Two liquids having different boiling points can be separated by

(A) Crystallisation	(B) Condensation
(C) Distillation	(D) Electrolysis

Question-8 The molten sodium chloride acts as a__________________of electricity.

(A) Good conductor	(B)bad conductor
(C)Semi conductor	(D)Conductor

Question-9
A substance which causes addition of oxygen or removal of hydrogen from other substances is called

(A) Reducing agent	(B) Oxidising agent
(C) Hydrogenating agent	(D) Deoxygenating agent

Question-10
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

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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

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