Science Olympiad Class-8 Paper-5

Test Preparation on Science Olympiad Class-8 Paper-5

1.

Identify the metal that does NOT react with dilute HCl.

Mercury, Magnesium, Aluminium, Iron

a)
Hg

b)
Mg

c)
Al

d)
Fe

1a
2b
3c
4d

2.

Complete the following sentences.

(i) To draw water from a well we have to _ at the rope.

(ii) A charged body an uncharged body towards it.

(iii) To move a loaded trolley we have to _ it.

a)
(i) Push, (ii) Attracts

b)
(i) Pull, (iii) Either push or pull

c)
(i) Push (ii) Repel

d)
(i) Pull, (ii) Repel

1a
2b
3c
4d

3.

Select the option that correctly fills the blanks in any two of the given statements.

(i) _____ refers to the plants found in a particular area.

(ii) _ species are those which are going to be extinct in near term future.

(iii) The lion-tailed macaque is included in species the in red data book.

(iv) A place rich in _____ species is called a hotspot. (NSO, 2016)

a)
(i) Fauna, (ii) Endangered

b)
(iii) Endangered, (iv) Endemic

c)
(i) Flora, (iii) Vulnerable

d)
(ii) Rare, (iv) Endangered

1a
2b
3c
4d

4.

In cities, water from an overhead tank is supplied to houses using the principle of:

(i) difference in pressure

(ii) gravitational force

(iii) decrease of friction in pipes

a)
Only (i)

b)
Only (i) and (ii)

c)
Only (ii) and (iii)

d)
(i), (ii) and (iii)

1a
2b
3c
4d

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