National Science Olympiad Forum By SOF Olympiad Trainer

harry potter from Hogwarts school of witchcraft and wizardry , london

Subject :NSO Class : Class 5

Which of the following belong to the same group to which microbes that cause plague (X) and polio (Y) belong?

	X	Y
A	Q	R
B	P	R
C	Q	P
D	P	S

Ans 1:

harry potter from Hogwarts school of witchcraft and wizardry , london

Class : Class 5

Ans 2:

siri from Vibgyor, Bangalore

Class : Class 6

correct ans is

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harry potter from Hogwarts school of witchcraft and wizardry , london

Subject :NSO Class : Class 5

Raman planted four plants P, Q, R and S near the boundary of his garden. The diagram shows the distribution of these plants in the garden area after a certain time period.

Which one of the plants is most likely to be Hiptage?

APlant P
BPlant Q
CPlant R
DPlant S

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

Seeds of Hiptage has wings that enable them to spread upto considerable distances by wind, especially when they are released from high in the forest canopy. Seeds of S are spread to a large area hence S can be Hiptage.

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Vaibhav Elisetti from sri chaitanya techno school Nallagandla, Hyderabad

Subject :NSO Class : Class 5

v

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Ans 1:

Vaibhav Elisetti from sri chaitanya techno school Nallagandla, Hyderabad

Class : Class 7

my school is best

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NAMAN HARITASH from DPS DLF CITY, GURGAON

Subject :NSO Class : Class 8

A star which appears blue will be

A As hot as Sun
B Cooler than Sun
C Very cold indeed
D Much hotter than Sun.

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Ans 1:

Yograj from Nirmal Bethany High school , Pune

Class : Class 8

D. much hotter than sun

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Shreyanshi from Don Bosco Senior Secondary School, Navi Mumbai

Subject :NSO Class : Class 7

When a light ray is reflected repeatedly by a set of parallel plane mirrors, the intensity of the light ray decreases after some reflections. This is because of

A Poor reflection from mirrors
B Absorption of some amount of light by mirrors
C Dispersion of light when the rays travel through the atmosphere
D Scattering of light by the mirrors.

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Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi

Class : Class 8

Opt. B is right.

Ans 2:

Midhuna from ABCD, Banglore

Class : Class 3

no

Ans 3:

Midhuna from ABCD, Banglore

Class : Class 3

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Debarka Das Gupta from Silchar Don Bosco School, Silchar

Subject :NSO Class : Class 7

What is the angle of incidence and angle of reflection in the given figure?

A 360°
B 180°
C 90°
D 0°

answer is dwhich is 0'

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Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

SOF, I am not able to see the points Q, R and S in the given image. They are not marked. I request you to kindly rectify this error.

Ans 2:

arnav raj sharma from gulibulium school, new york

Class : Class 8

I also cant see Q R S in the question

Ans 3:

I Riona Angel from Pincushion Montessori International School, Vellore

Class : Class 7

I have the same problem

Ans 4:

Gauri Singh from St Johns School Marhauli, Varanasi

Class : Class 8

Yes, it's option D..

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Vatsalya from AECS, Bulandshahr

Subject :NSO Class : Class 3

Advika studies in 1st standard and is fond of eating. She looks healthy but falls ill frequently. Which of the following food items she probably does not include in her diet?

A
B
C
D

ok

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

C

Option C shows vegetables. They are rich in vitamins and minerals. They keep us healthy and protect us from diseases.

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Prachi Todalge from New India School, Pune

Subject :NSO Class : Class 7

Which of the following statements is correct?

A A cyclone warning is issued up to 6 hours in advance by the government.
B Wind currents are generated due to sea breeze.
C A lightning conductor installed in a building repels the lightning.
D A thunderstorm is accompanied by lightning.

Option D is correct

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Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi

Class : Class 8

Yes, opt. D

Ans 2:

OJAS from DPS, Nerul

Class : Class 7

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Pranjal R T from The Samhita Academy, Bangalore

Subject :NSO Class : Class 5

Burning of garbage leads to [1] . [1] can cause deadly diseases such as [2] and asthma. Which of the following options correctly fills up [1] and [2]? A. [1] - Air pollution [2] - Lung cancer B. [1] - Water pollution [2] - Lung cancer C. [1] - Soil pollution [2] - Cholera D. [1] - Water pollution [2] - Typhoid

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

A. [1] - Air pollution [2] - Lung cancer

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Pranjal R T from The Samhita Academy, Bangalore

Subject :NSO Class : Class 5

Burning of garbage leads to [1] . [1] can cause deadly diseases such as [2] and asthma.Which of the following options correctly fills up [1] and [2]? A. [1] - Air pollution [2] - Lung cancer B. [1] - Water pollution [2] - Lung cancer C. [1] - Soil pollution [2] - Cholera D. [1] - Water pollution [2] - Typhoid

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

A

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