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Chemistry - 9 Chapter - 7
Solution and Suspension
Test - 15
1.
The lowest temperature which is achieved by mixing sodium chloride with ice is -12
o
C.
a) False
b) True
2.
One dm3 =1 litre
a) True
b) False
3.
Molar mass of sulphuric acid is 198
a) False
b) True
4.
Water is an excellent solvent
a) True
b) False
5.
Brass is solution of Lead and Tin
a) True
b) False
6.
Homogeneous mixture of solute and solvent is called
a) Solvent
b) Suspension
c) Solute
d) Solution
7.
Brass is a solution of
a) Copper and mercury
b) Copper and zinc
c) Copper and tin
d) Copper and lead
8.
The temperature that we can achieve by calcium chloride-ice mixture is:
a) 55
o
C
b) -65
o
C
c) 75
o
C
d) -45
o
C
9.
Molar mass of sodium chloride is:
a) 23.5 gms
b) 25.5 gms
c) 36.5 gms
d) 35.5 gms
10.
The number of moles in 49 gms of sulphuric acid are:
a) 0.4
b) 0.3
c) 0.6
d) 0.5
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