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


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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 process in which the bubbles formed in a liquid which is being heated reach the surface,burst and allow the vapour to escape into the atmosphere is called________________.

(A) boiling	(B)freezing
(C)melting	(D)condensation

Question-3
The changes which takes longer time to occur are called__________.

(A) Fast changes	(B) Slow changes
(C) desirable changes	(D) Undesirable changes.

Question-4
The changes which cannot be reversed even by changing the conditions is called____________.

(A) reversible changes	(B) irreversible changes
(C) desirable changes	(D) undesirable changes

Question-5 Curdling of milk is ___________.

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

Question-6 A chemical reaction in which heat and light in the form of flame are given out is ________________.

(A) burning	(B)rusting
(C)melting	(D)freezing

Question-7 Cooking of food is a _________.

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

Question-8 Digestion of food is____________.

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

Question-9
A change which is useful to us is called a ___________.

(A) Fast changes	(B) Slow changes
(C) desirable changes	(D) undesirable changes.

Question-10
The changes which do not repeat themselves at regular intervals of time are called___________.

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

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Std 6

ICSE/ISC

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