1. Which one of the following
metals is found in ‘plaster of Paris?
(a)
Calcium
(b)
Magnesium
(c)
Potassium
(d)
Sodium
2. Which one of the following is
an element?
(a)
Topaz
(b)
Diamond
(c)
Rudy
(d)
Sapphire
3. Which one of the following types of glass can cut off ultraviolet
rays?
(a)
Soda glass
(b)
Pyrex glass
(c)
Jena glass
(d)
Crookes glass
4. A
bee –sting leaves an acid causes pain and irritation. The injected acid is
(a)
Methanioc acid
(b)
Citric acid
(c)
Sulphuric acid
(d)
Acetic acid
5. A student by chance mixed acetone with
alcohol. This mixture of acetone and alcohol can be separated by
(a)
Filtration
(b)
Separating funnel
(c)
Fractional crystallization
(d)
Fractional distillation
6. Which one among the following is called philosopher’s wool?
(a)
Zinc bromide
(b)
Zinc nitrate
(c)
Zinc oxide
(d)
Zinc chloride
7.
Consider the following statements regarding the property of hard water?
1.
Temporary hardness of water is due to the
presence of soluble magnesium and calcium hydrogen carbonate.
2.
Temporary hardness of water can be removed by
boiling.
3.
Calgon’s method is applied to remove temporary
hardness of water.
4.
Permanent hardness of water is removed by
Clark’s method.
Which of the statements given above is /
are correct?
(a)
1 and 2
(b)
1, 2 and 3
(c)
3 and 4
(d)
Only 2
8. Which one of the following
elements has valency three?
(a)
Oxygen
(b)
Lithium
(c)
Carbon
(d)
Boron
9.
Glass is a
(a)
Vitrified liquid
(b)
Crystalline material
(c)
Semi-solid
(d)
Sublimation of iodine
10. Which one of the following
non-metals is not a poor conductor of electricity?
(a)
Sulphur
(b)
Selenium
(c)
Bromide
(d)
Phosphorus
Answer:
1.
A
2.
B
3.
D
4.
A
5.
D
6.
C
7.
B
8.
D
9.
A
10.
B
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