National Science Olympiad Forum By SOF Olympiad Trainer

Priydarshini sehgal from The Shri ram school aravalli, Gurgaon

Subject :NSO Class : Class 5

Select the object that works on the same type of energy conversion as an electric iron?

A
B
C
D

Correct answer is option A, Suggestion -Hair straightener picture could have been better .

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Parth Kaushish from MDPS, Faridabad

Subject :NSO Class : Class 1

Solve the given crossword to find the number of homes:

(A) Built by animals themselves
(B) Built by man for domestic animals
A a-3, b-1
B a-2, b-2
C a-3, b-2
D a-1, b-3

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Anu from Haralur, Bengaluru

Subject :NSO Class : Class 1

Study the given relationship. Which of the following can be placed in the blank?
Shed : Cow :: Coop : __________

APig
BHorse
CHen
DSheep

I misuderstoud

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Mishika shah from little angels high school, gwalior

Subject :NSO Class : Class 6

There is a certain relationship between figures (i) and (ii). Establish the similar relationship between figures (iii) and (iv) by selecting a suitable figure from the options which will replace (?) in figure (iv).

A

B

C

D

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Ans 1:

Aadit vaibhav from la martiniere college , lucknow

Class : Class 6

c

Ans 2:

Mishika shah from little angels high school, gwalior

Class : Class 6

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Aarav nikalji from Apeejay school nerul , Navi Mumbai

Subject :NSO Class : Class 1

Which among these animals can live both in water and on land?
A
B
C
D All of these

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colonel ruffs from dumb Indian International School, brawl stars

Subject :NSO Class : Class 7

Study the given figure carefully.

Which of the following reactions explains the above change most appropriately?

A ZnSO₄ + Cu → CuSO₄ + Zn
B CuSO₄ + Fe → FeSO₄ + Cu
C FeSO₄ + Cu → CuSO₄ + Fe
D CuSO₄ + Zn → ZnSO₄ + Cu

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Ans 1:

Shagun from MAXFORT DWARKA, New Delhi

Class : Class 5

b

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shaurya aggarwal from scholars rosary senior secondary school, rohtak

Subject :NSO Class : Class 7

Marking on a bulb is 60 W, 220 V. What does it signify?

AThe bulb is connected across the 220 volts, 60 joules of energy is consumed for every second.
BThe bulb is connected across 60 joules, 220 volts of energy is consumed.
C60 unit of current will flow in the bulb.
D220 unit of current will flow in the bulb.

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Jishnu Nainani from Zydus School of Godhavi, Ahmedabad

Subject :NSO Class : Class 8

The tail of a comet points away from the Sun due to

A Centrifugal force
B Electrical repulsion
C Attraction of comet due to other planets
D Radiation pressure.

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Karthika from isg, Muscat

Subject :NSO Class : Class 7

Which of the following in an incorrect food chain?

AGrass → Zebra → Tiger
BGrass → Grasshopper → Mouse → Snake → Hawk
CSea grass → Snail → Fish → Seal → Polar bear
DOrchids → Mice → Moths → Owl

How can mice be eaten by moths?

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cherry from atomic energy central school-4, mumbai

Subject :NSO Class : Class 8

Study the given flow chart and identify P, Q and R.

	P	Q	R
A	Livestock wastes	Styrofoam cup	DDT
B	Garbage	BHC	Aluminium cans
C	Sewage sludge	DDT	Styrofoam cup
D	Livestock wastes	BHC	Grocery

Styrofoam cup is not recyclable...then how come is the correct answer is A.It should be c

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