EASY
6th CBSE
IMPORTANT
Earn 100
When ice melts to form water, then a change occurs in its
33.33% studentsanswered this correctly
Important Questions on Changes Around Us
EASY
6th CBSE
IMPORTANT
Which one of the following is a beneficial change?
MEDIUM
6th CBSE
IMPORTANT
When ice-cream melts:
A. Heat is lost from the ice-cream
B. Heat is gained by the ice-cream
C. Heat is lost from the air
D. Heat is gained by the air
EASY
6th CBSE
IMPORTANT
Which one of the following is not a reversible change?
HARD
6th CBSE
IMPORTANT
Which of the following changes are irreversible?
A. Lifting a chair.
B. Filling a glass with orange juice.
C. Cooking a pot of rice.
D. Bursting a balloon.
MEDIUM
6th CBSE
IMPORTANT
One of the following is not an irreversible change. This one is
MEDIUM
6th CBSE
IMPORTANT
Which of the following will lead to changes which cannot be reversed?
A. Addition of water to salt.
B. Addition of water to cement.
C. Addition of water to plaster of Paris.
D. Pouring of water on hot iron rim of a cartwheel.
MEDIUM
6th CBSE
IMPORTANT
Which of the following changes cannot be reversed to obtain the original objects?
A. Inflating a balloon.
B. Bursting a balloon.
C. Melting of wax.
D. Burning of wax.
HARD
6th CBSE
IMPORTANT
When electricity is passed through water, then two gases, hydrogen and oxygen are produced. On the other hand, when heat is supplied to water, then another gas, steam, is produced. What type of change takes place.
(a) in the first case?
(b) in the second case?
