1.
When an iron nail is, dipped in a solution of
copper sulphate, the iron nails becomes brownish in colour and the blue colour of
copper sulphate solution fades after sometime. The reaction is an example of
chemical.
(a)
Combination
(b)
Decomposition
(c)
Displacement
(d)
Double displacement
2.
If excess fertilizer is applied to a plant
without water, the plant will
(a)
Be stunted in growth
(b)
Develop
modification
(c)
Die due to plasmolysis
(d)
Remain unaffected
3.
What is the key ingredient in vinegar that you
use in your diet?
(a)
Acetic acid
(b)
Ascorbic acid
(c)
Benzoic acid
(d)
Nicotinic acid
4.
Which one
of the following is not biodegradable?
(a)
Woolen mat
(b)
Silver foil
(c)
Leather bag
(d)
Jute basket
5.
N recent times, ‘Spirulina’ is being popularized
as a rich source of some nutrients. It is a/ an
(a)
Blue green algae
(b)
Mushroom
(c)
Fern
(d)
Flowering
plant
6.
Which one among the following animal tissues
transport hormones and heat and maintains water balance?
(a)
Connective tissue
(b)
Muscular tissue
(c)
Blood
(d)
Nervous tissue
7.
Which one of the following is the correct sequence
of a food chain?
(a)
Diatoms → Crustaceans →Herring
(b)
Crustaceans → Diatoms → Herring
(c)
Diatoms → Herring → Crustaceans
(d)
Crustaceans → Herring → Diatoms
8.
Human body’s main organ of balance is located in
(a)
Inner part of ear
(b)
Middle part of ear
(c)
Front part of brain
(d)
Top part of vertebral column
9.
Which of the following disease is not
transmitted by Aedes aegypti?
(a)
Chikungunya
(b)
Dengue
(c)
Chicken pox
(d)
Yellow fever
10.
A deficiency of which one of the following
minerals is most likely to lead to an immunodeficiency?
(a)
Calcium
(b)
Zinc
(c)
Lead
(d)
Copper
Answer:
1.
C
2.
C
3.
A
4.
B
5.
A
6.
C
7.
A
8.
B
9.
C
10.
A
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