CBSE Class 9 Science Worksheet
Unit 1-Matter - Its Nature & Behaviour - Is Matter Around Us Pure?
1.
A mixture of water and silver chloride can be separared by---
A)
Centrifugation
B)
Fiteration
C)
Sedimentation
D)
Sublimation
3.
Fill in the Blanks: There are ________ phases present in a colloidal solution.
4.
Which of the following element is not attracted by a magnet?
A)
Iron
B)
Cobalt
C)
Nickel
D)
Copper
5.
State True/False: A mixture of salt and iron filings is a homogenous mixture.
A)
true
B)
false
6.
Mixture can be
A)
homogeneous
B)
heterogeneous
C)
both a and b
D)
none of these
7.
Fill in the Blanks: ___________ is used to separate wheat grains from husk.
8.
What process is used to separate ammonium chloride and salt?
A)
Sublimation
B)
Chromatography
C)
Crystallization
D)
Evaporation
9.
Fill in the Blanks: The scattering of light as a light beam passes through a colloid is called _________.
10.
State True/False: The solute particles can be separated from the mixture by the process of filtration.
A)
true
B)
false
11.
Fill in the Blanks: Milk is churned to separate cream from it by the process of ____________.
12.
Fill in the Blanks: A solution is a ____________ mixture.
13.
sol is
A)
liquid in gas
B)
solid in gas
C)
solid in liquid
D)
liquid in solid
14.
brass is a
A)
compound
B)
element
C)
homogeneous mixture
D)
heterogeneous
15.
Fill in the Blanks: __________________ is used for separating dyes in blank ink.
16.
State True/False: Milk is a colloidal solution.
A)
true
B)
false
18.
brass is a solution of molten copper in
A)
solid zinc
B)
molten zinc
C)
gaseous zinc
D)
moten tin
19.
Fill in the Blanks: When a beam of light is passed through a colloidal solution, it gets ___________.
20.
Which metal is liquid at room temperature?
A)
Sodium
B)
Gold
C)
Bromine
D)
Mercury
CBSE Class 9 Science Worksheet
Unit 1-Matter - Its Nature & Behaviour - Is Matter Around Us Pure?
Answers
1.
Option B
Solution:
Correct answer is b.A mixture of water and silver chloride can be sepatared by fiteration.
2.
Option D
3.
two
4.
Option D
5.
Option B
6.
Option C
7.
Winnowing
8.
Option A
9.
Tyndall effect
10.
Option B
11.
centrifugation
12.
homogeneous
13.
Option C
14.
Option C
15.
Chromatography
16.
Option A
17.
Option D
18.
Option B
19.
scattered
20.
Option D
