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Class 7 Chemistry
Test Description: Enjoy learning with fun
Instructions: Answer all questions to get your test result.
1) Curdling of milk is an example of
A
physical change
B
chemical change
C
natural change
D
man-made change
2) Growth of man and plants are examples of
A
desirable change
B
none of these
C
natural change
D
both 1 and 2
3) Liquefaction is also defined as
A
freezing
B
deposition
C
condensation
D
sublimation
4) sublimation of ammonium chloride is an example of
A
physical change
B
chemical change
C
none of these
D
both 1 and 2
5) The state of matter in which shape in indefinite but volume is definite
A
both 1 and 2
B
liquid
C
solid
D
gas
6) An example of undesirable change which can be converted into desirable change
A
curdling of milk
B
flood
C
producing electricity from garbage
D
earthquake
7) The change which are permanent and irreversible are
A
physical change
B
chemical change
C
natural change
D
man made change
8) Matter made of same kind of particles is said to be
A
solution
B
solute
C
heterogeneous
D
homogeneous
9) The gas evolved when lead dioxide is
A
chlorine
B
carbon dioxide
C
oxygen
D
nitrogen
10) Ammonium Chloride a sublimable solid undergoes
A
combination
B
dissociation
C
synthesis
D
decomposition
*select an answer for all questions
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