Important Paper Olympiad Science (Mock Test)
1. Identify the reaction in which an atom or a group of atoms present in a molecule is displaced by another atom .
(A)Displacement
(B) Double decomposition
(C) Decomposition
(D) Synthesis
Ans (a )
2. What is the smallest resistance that can be obtained by using a 6Ω resistor and a 12Ω resistor respectively connected in parallel ?
(A) 4Ω
(B)6Ω
(C)8Ω
(D)12Ω
Ans ( a)
3. Which of the following transport (s) hormones from the place of origin to the place of target ?
(A) Ducts
(B) Blood
(C) Nerves
(D) All these
Ans ( b)
4. Which of the following is a metalloid ?
(A) Carbon
(B)Silicon
(C) Germanium
(D) Tin
Ans ( c)
5. Where does fertilization take place in a plant ?
(A) pollen grains
(B) Anthers
(C) Stigma
(D) Ovules
Ans ( d)
6. Identify a transitional element
(A) Pb
(B)As
(C) A/
(D)Ni
Ans (d )
7. Which of the following is /are possible examples fo variation within a human family ?
(A) skin colour
(B) Height
(C)Earlobes
(D) All of these
Ans ( d)
8. lenz’s law is derived from the low of conservation of
(A) Momentum
(B) energy
(C) charge
(D) magnetism
Ans ( b)
9. Which hydrocarbon exhibits isomerism ?
(A) Ethane
(B) Propane
(C) Butane
(D) Methane
Ans (c )
10. Which of the following compounds dissolves in water to give a solution with a pH greater than 7?
(A) Calcium carbonate
(B) Copper (II) hydroxide
(C) Sodium hydroxide
(D) Sulphur dioxide
Ans (c )
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