Chapter 3-5 Student Chemistry Worksheet - Class X, Central Board Of Secondary Education Page 2
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30Chapter 3 - Metals and Non-Metals
Formative Assessment Manual for Teachers
2.
The solution of ash obtained after burning magnesium ribbon in air will turn.
a.
Red litmus to blue because it is acidic in nature.
b.
Blue litmus to red because it is basic in nature.
c.
blue litmus to red because if is acidic in nature.
d.
Red litmus to blue because it is basic in nature.
3.
___ x ____is the product formed when sulphur reacts with oxygen, it dissolves in water
to produce ___ y ___ Choose correcl oplion for x and y.
X
Y
a
SO
Acid
2
b
SO
Neutral
3
c
SO
Base
2
d
SO
Acid
3
4.
Sodium metal is stored in ___ x ___ because it reacts vigoursly to produce ___ y ___
Choose the correct option for x and y.
X
Y
a
Water
Acidic oxide
b
Alcohol
Neutral oxide
c
Kerosene
Basic oxide
d
Air tight container
Acidic carbonate
5.
Metal ___ x ___ reacts vigorously with water to produce gas__ y __which burns with the
“pop” sound Choose the correct option for x and y.
X
Y
a
Sodium
Oxygen
b
Magnesium
Oxygen
c
Sodium
Hydrogen
d
Sodium
Sodium oxide
32
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