Tamil Nadu (English Medium) Std 6 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1 The method used to separate substances differing in color, size and shape.

(A) Magnetic separation	(B)Decantation
(C)Hand picking	(D)Filtration

Question-2 The ________ changes on which that are useful in nature.

(A) Reversible	(B)Irreversible
(C)Desirable	(D)Undesirable

Question-3 The changes that don\t occur frequently at regular intervals of time are called.

(A) Exothermic changes	(B)Endothermic change
(C)Desirable change	(D)Non periodic change

Question-4 The ______ is the method of separating lighter particles from heavier particles using wind.

(A) Magnetic separation	(B)Sieving
(C)Winnowing	(D)Hand picking

Question-5 __________ is used to separate mixtures containing components which are attracted by magnet.

(A) Hand picking	(B)Sieving
(C)Magnetic Separation	(D)Winnowing

Question-6 In ________ changes i which the heat is liberated.

(A) Exothermic	(B)Endothermic
(C)Periodic	(D)Non periodic

Question-7 _________ are the changes in which that are not useful in nature

(A) Desirable changes	(B)Undesirable changes
(C)Periodic changes	(D)Exothermic changes

Question-8
The change in which the substance cannot be converted back into its

(A) reversible	(B) irreversible
(C) undesirable	(D) periodic change

Question-9
What is the suitable method of separating higher impurities from a mixture.

(A) Winnowing	(B) Hand picking
(C) Vaporisation	(D) Filtration

Question-10 In ______ changes in which the heat is absorbed.

(A) Exothermic	(B)Endothermic
(C)Periodic	(D)Non periodic

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Std 6

Tamil Nadu (English Medium)

Practice in Related Chapters
Chemistry in Daily Life
The World of Plants
Separation of Substances
Cell Structure
Our Environment
Changes Around Us
Light
Food Habit
Measurement and Motion
Types of Energy
Magnetism
Structure of Living Organisms