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


English
Computer Application
Physics
Chemistry
Biology
Mathematics
History & Civics
Geography
Economics

Back to home

Start Practice

Question-1
Conversion of water to steam is a

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

Question-2
Decomposition reaction caused by light is called

(A) Photodecomposition	(B) Thermal decomposition
(C) Catalytic decomposition	(D) Electrolytic decomposition

Question-3
Brass objects are protected against corrosion by chromium

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

Question-4
Any process involving the addition of hydrogen or any other electropositive radical or the removal of oxygen or any other electronegative radical is called

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

Question-5
A reaction which involves simultaneous oxidation and reduction is called

(A) Neutralisation reaction	(B) Oxidation-reduction reaction
(C) Displacement reaction	(D) Combination reaction

Question-6
Reaction between barium chloride(Bacl₂)and sulphuric acid (H₂SO₄)is a

(A) Double displacement reaction	(B) Combination reaction
(C) Decomposition reaction	(D) Addition reaction

Question-7 The refined metal is obtained at the_____________________.

(A) Anode	(B)Cathode
(C)Electrolyte	(D)Electrode

Question-8 During the electrolysis of molten sodium chloride,_______________is produced at the anode.

(A) Sodium	(B)Chlorine
(C)Hydrogen	(D)Oxygen

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 A reaction in which one part (an atom or a group of atoms) of a molecule is replaced by another is called_____________.

(A) Decomposition reaction	(B)Combination reaction
(C)Addition reaction	(D)Substitution reaction

Click here to see your answersheet and detailed track records.

Std 8

ICSE/ISC

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

CONTENTS

Back to home

Start Practice

Practice in Related Chapters