Important Paper Olympiad Science (Mock Test)

1. Which of he ;following is NOT true concerning photosynthesis in green plants ?
(A) Absorbs carbon dioxide
(B) Releases oxygen
(C) Occurs in the presence of sunlight
(D) Absorbs carbohydrates
Ans ( d)
2. What is the nature of blood on pH scale ?
(A) Neutral
(B) Highly alkaline
(C) Slightly acidic
(D) Acidic
Ans (c )
3. Soaps can remove dirt or grease from clothes by the formation of
(A) acid
(B) base
(C) micelle
(D)ethyl alcohol
Ans (c )
4. Process of embryo  formation without fertilization is
(A) apogamy
(B) parthenogenesis
(C) polyembryony
(D) apospory
Ans (b )
5. Where does fertilization take place in plants ?
(A) Stigma
(B)Ovary
(C) Stamen
(D) Anther
Ans ( b)
6. The ozone layer is destroyed due to
(A)CFC
(B) CO2
(C) SO2
(D) NH3
Ans ( a)
7. Which lines in the periodic table separate metals from non-metals  ?
(A) Zig-zag
(B) Straight
(C)curved
(D) Both (B)and (c)
Ans ( c)
8. Major source of water pollution is
(A) Heavy metals
(B) Mycobacterium
(C) coli form
(D) Streptococces
Ans ( c)
9. The part of the brain which is connected with balancing of the body is
(A) cerebrum
(B) cerebellum
(C) medulla
(D) pons varoli
Ans (b )
10. The  manufacturer of a lamp claims that 80% of the power of lamp is emitted as light the light energy emitted by the lamp is
(A) 12 .8 W
(B) 12W
(C) 15W
(D) 3W
Ans ( b)
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