National Science Olympiad Forum By SOF Olympiad Trainer

Shreyas from Bharatiya Vidya bhavan , Thiruvananthapuram

Subject :NSO Class : Class 6

Which of the following options will complete the given figure matrix?

A
B
C
D

fc nsyn

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Het Aryan from Podar International School , Pune

Subject :NSO Class : Class 9

The given diagram represents a fractionating column where petroleum is separated into various fractions. Arrange the fractions X, Y, Z in order of decreasing boiling point range and identify the fraction that condenses first.

AZ > Y > X; X
BZ > Y > X; Z
CX > Y > Z; Y
DY > Z > X; Z

Fractional distillation.

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Ans 1:

Het Aryan from Podar International School , Pune

Class : Class 9

Ok

Ans 2:

Ashvik Banerjee from Mount Litera Zee School , Vasco

Class : Class 9

It is B

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mahati from Delhi public school, Hyderabad

Subject :NSO Class : Class 5

Find the missing number in the given number pattern.
3, 9, 27, 81, __?__

A213
B243
C198
D256

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Sanjay Srinivasan from Inventure academy, Bangalore

Subject :NSO Class : Class 7

Identify the incorrect matches and select the correct option.
(i) Vitamin B₁ – Thiamine
(ii) Vitamin B₃ – Niacin
(iii) Vitamin B₇ – Pantothenic acid
(iv) Vitamin B₁₂ – Biotin

A(i) and (ii)
B(i) and (iii)
C(iii) and (iv)
D(ii) and (iv)

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Antareep Mukherjee from New Horizon Public School, Bangalore

Class : Class 8

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Ridhima Mishra from DPS Kalyanpur , Kanpur

Subject :NSO Class : Class 8

An oil spill covered a large area of water in an ocean. The marine life in that area was badly affected. A lot of marine animals were found dead and floating on the surface of the water. This is because ____________.
(i) They drank the water that was contaminated by the oil
(ii) The fish swallowed the oil and were poisoned
(iii) Eutrophication caused as a result of oil spill leads to depletion of oxygen in water body.

A (ii) only
B (i) and (ii) only
C (ii) and (iii) only
D (i), (ii) and (iii)

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Ans 1:

Vihaan Nair from Ambassador School, DUBAI

Class : Class 8

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Sanjay Srinivasan from Inventure academy, Bangalore

Subject :NSO Class : Class 7

Meenakshi walks 1 km towards East and then she turns to South and walks 5 km. Again she turns to East and walks 2 km, after this she turns to North and walks 9 km. Now, how far is she from her starting point?

A3 km
B4 km
C5 km
D7 km

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Ans 1:

Vihaan from Dhirubhai Ambani International School, Mumbai

Class : Class 7

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LAKSH RAJ from Mothers global school, Delhi

Subject :NSO Class : Class 4

Mansi did a study on two fabrics, P and Q. At the end of her study she prepared following table about her observations. What can be the name of these two fabrics?

AFabric P-Rayon Fabric Q-Lycra
BFabric P-Cotton Fabric Q-Linen
CFabric P-Polyester Fabric Q-Silk
DFabric P-Silk Fabric Q-Cotton