National Science Olympiad Forum By SOF Olympiad Trainer

Sinita Ray from Greenwood High international, Bangalore

Subject :NSO Class : Class 5

Preeti performed an iodine test on a leaf and the result is shown here.

Which of the following conclusions cannot be made from this?

APart X of the leaf had chlorophyll while part Y lacked chlorophyll.
BPart X of the leaf received sunlight while part Y did not receive sunlight.
CPart X of the leaf lacked CO₂ while part Y received CO₂.
DStarch was present in part X of the leaf while in part Y it was absent.

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Aarav from DPS, Bengaluru

Subject :NSO Class : Class 3

House 'X' is commonly found in villages. It is made up of mud, sticks and straw and are not very strong. Identify the house.

A

B

C

D

hut

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Archit Raj from Little ANGELS school , Munger

Subject :NSO Class : Class 5

Refer to the diagram given below which shows an experiment to measure the volume of a stone.

What is the volume of the stone?

A15 cm3
B20 cm3
C25 cm3
D40 cm3

C

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Archit Raj from Little ANGELS school , Munger

Class : Class 5

B

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Archit Raj from Little ANGELS school , Munger

Subject :NSO Class : Class 5

Which of the following statements about the three items shown in the given diagram is/are correct?

1. The bag has the most potential energy.
2. The vase has the least potential energy.
3. The bag has more potential energy than the ball.
4. The ball has less potential energy than the vase.

A1 only
B3 only
C1 and 2
D3 and 4

D

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Archit Raj from Little ANGELS school , Munger

Subject :NSO Class : Class 5

Which unfavourable condition must have existed in the environment to cause such an incident as shown below?

AFire
BFlood
CDrought
DEarthquake

C

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Archit Raj from Little ANGELS school , Munger

Subject :NSO Class : Class 5

The best way to reduce air pollution in cities is to .

Areduce the height of the buildings so that the polluted air can escape
Bbuild the cities out in the open countryside where there is no air pollution
Cimprove the public transport system so as to reduce the number of fuel burning vehicles
Dbuild better roads so that more cars and trucks can get people and goods around the city faster.

C

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Archit Raj from Little ANGELS school , Munger

Subject :NSO Class : Class 5

The diagram below shows magnet A, magnet B and magnet C

Based on the diagram, identify the poles at X and Y.

--------X-----------------------Y
ANorth pole--------North pole
BNorth pole--------South pole
CSouth pole--------North pole
DSouth pole--------South pole