ICSE/ISC Std 6 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1 The formation of brown powdery material on the surface of iron in the presence of moist air is called_____________.

(A) rusting of iron	(B)protection of iron
(C)reversible process of iron	(D)fast process

Question-2 The conversion of a liquid into its vapour at any temperature below its boiling point is called__________.

(A) dissolution	(B)evaporation
(C)boiling	(D)condensation

Question-3 Cooking of food is a _________.

(A) Physical change	(B)chemical change
(C)reversible change	(D)undesired change

Question-4 Burning of candle is a ____________.

(A) physical change	(B)chemical change
(C)reversible change	(D)endothermic change

Question-5 When a solid substance is heated,changes into the vapour form,the process is called__________.

(A) Vapourisation	(B)dissolution
(C)condensation	(D)melting

Question-6 An alternation in the physical and /or chemical properties of matter as an effect of some kind of energy is called a __________.

(A) State	(B)change
(C)cause	(D)hypothesis

Question-7
The technique pasteurization was developed by _______________.

(A) Louis Pasteur	(B) Rutherford
(C) Linous Pauling	(D) Bohr

Question-8
The changes which repeat themselves at regular intervals of time are called___________.

(A) Undesirable changes	(B) desirable changes
(C) Periodic changes	(D) Non-periodic changes

Question-9 Curdling of milk is ___________.

(A) chemical change	(B)Physical change
(C)reversible	(D)exothermic process

Question-10 The changes which occur in nature on their own are called____________.

(A) Natural change	(B)Man-made changes
(C)fast change	(D)desirable changes

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Std 6

ICSE/ISC

Practice in Related Chapters
Chemistry and its importance
Changes in the World around us
Pure and Mixed Substances
Water
Air
Rocks, Soils and Minerals
Changes in the world
Matter and its Classification
The Nature of Matter
The World of Chemistry