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Total questions: 8
Worksheet time: 80secs
Name
Class
Date
1.
what are changes that are irreversible called ?
a)
physical change
b)
chemical change
c)
sublimation
d)
evaporation
2.
is burning of wood chemical or physical change
a)
chemical change
b)
physical change
c)
irreversible
d)
reversible
3.
Melting of wax is which type of change?
a)
physical change
b)
chemical change
4.
Which of the following is an irreversible change?
a)
folding of paper
b)
melting of ice
c)
melting of wax
d)
growth of tree
5.
Melting of ice is which type of change?
a)
physical change
b)
chemical change
6.
Making of curd is which type of change?
a)
physical change
b)
chemical change
c)
irreversible
d)
reversible
7.
Which type of change can be turned back?
a)
irreversible
b)
reversible
c)
unwanted
8.
Change of water into vapour is which type of change?
a)
reversible
b)
irreversible
c)
pure
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