National Science Olympiad Forum By SOF Olympiad Trainer

Vartika Agarwal from Phoenix world school, Pune

Subject :NSO Class : Class 6

Prashant tested some food items and tabulated the results as follows.

Identify X, Y and Z and select the incorrect statement.

AY helps in formation of haemoglobin which carries oxygen from one part of the body to another.
BX helps in formation of antibodies in our body which fight infection and protect us from diseases.
CSame amount of Z provides more energy as compared to X.
DZ forms shock absorbing cushion around our internal organs.

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Ans 1:

Akshara from sishya OMR , chennai

Class : Class 8

Ans 2:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Ans 3:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Ans 4:

Adyanika Satpathy from DPS International School, Singapore

Class : Class 9

Olx

Ans 5:

Vartika Agarwal from Phoenix world school, Pune

Class : Class 9

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Vartika Agarwal from Phoenix world school, Pune

Subject :NSO Class : Class 6

Match column I with column II and select the correct option from the given codes.

A(i) - (E); (ii) - (B); (iii) - (A); (iv) - (C); (v) - (D)
B(i) - (D); (ii) - (E); (iii) - (B); (iv) - (A); (v) - (C)
C(i) - (E); (ii) - (A); (iii) - (B); (iv) - (C); (v) - (D)
D(i) - (D); (ii) - (A); (iii) - (B); (iv) - (C); (v) - (E)

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Ans 1:

Iba khan from DPS GBN, Noida

Class : Class 6

Ans 2:

harry potter from hogwarts, hogsmeade

Class : Class 6

Ans 3:

Lakshmi from FPS, Bangalore

Class : Class 10

Ans 4:

Vartika Agarwal from Phoenix world school, Pune

Class : Class 9

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yashmit singh from la blossom school, jalandhar

Subject :NSO Class : Class 5

Which of these is the most accurate description of air, based on the pie-chart?

A Two-thirds nitrogen, two-thirds oxygen, and one-tenth other gases
B Three-quarters oxygen and one-third nitrogen and other gases
C One-half nitrogen and one-half oxygen and other gases
D One-fifth oxygen and four-fifths nitrogen and other gases

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Ans 1:

Biju Pappachan from Rkc , Raipur

Class : Class 1

Question was very tricky how am I supposed to understand through a pie chart

Ans 2:

Goutham Ram from Lecole' Chempaka International, Trivandrum

Class : Class 5

At least say how much percentage of the different air are there.

Ans 3:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

THE OPTIONS DO NOT MAKE SENSE

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D HARSHINI from ST MARTINS HIGH SCHOOL CHINTAL, HYDERABAD

Subject :NSO Class : Class 9

Among the following cell organelles P, Q, R and S, which is the odd one out?

A S, because the others are membrane bound cell organelles.
B P, because the others are involved in cell secretion.
C R, because the others are involved in protein storage.
D Q, because the others are involved in energy production.

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Ans 1:

Harsh Gupta from AECS Narora, Narora

Class : Class 9

Ans 2:

ICHALKARANJI from dkte, ichalkranji

Class : Class 8

yes your are right

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Snigdha swaminath from Christ nagar higher secondary school , Trivandrum

Subject :NSO Class : Class 6

Take 10 mL of water in 6 test tubes each and add different samples of substances to each test tube as shown in the given figure. Shake the test tubes vigorously for a couple of seconds and leave them undisturbed. In which of these test tubes, sample substances will remain insoluble in water?

A 1, 2 and 3
B 2, 3 and 4
C 3, 4 and 5
D 4, 5 and 6

C is correct

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Ans 1:

RICHA BORAH from K V ANNA NAGAR, CHENNAI

Class : Class 7

Sugar ,salt and washing powder are soluble in water while sand ,chalk powder and saw dust are insoluble in water.

Ans 2:

Ayuni Pathak from Lotus Valley International school , Noida

Class : Class 6

is washing powder soluble

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naman test from DPS Pune, Pune

Subject :NSO Class : Class 6

Using the "conduction tester" on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.

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Debarpan Das from Delhi Public School , Durgapur

Subject :NSO Class : Class 5

Find the correct water image of Fig. (X).

A
B
C
D

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Ans 1:

Nishchay Gupta from Cambridge Court World School, Jaipur

Class : Class 6

Ans 2:

Umair Kamal from GEMS MODERN, DUBAI

Class : Class 8

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Swarit from Indian School Wadi kabir, Muscat

Subject :NSO Class : Class 5

Refer to the given relationship based on body coverings and select the option which satisfies the same relationship.

APartridge : Turtle : Rabbit
BEgret : Flamingo : Hedgehog
CPorcupine : Oyster : Lizard
DWhale : Crab : Tortoise

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Ans 1:

Arnav Nandan from ST PETERS COLLEGE AGRA, Agra

Class : Class 9

idk these type of questions because i am not able to understand what animal they are talking

Ans 2:

Nishit Vaity from Euro School Airoli, Navi Mumbai

Class : Class 6

idk

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Aaron Dominic from Ryan International School, Bangalore

Subject :NSO Class : Class 7

In which of the following circuits bulb will glow?

A
B
C
D

The given answer is (a), if the circuit is closed in (a), since the wire has practically zero resistance the electricity will avoid the bulb. what do you think ?

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Ans 1:

Adwitiya Roy from South Point High School, KOLKATA

Class : Class 8

Ans 2:

Kashvi Rawat from Gear Innovative International School, Bengaluru

Class : Class 3

Wouldn't 'A' be a short circuit?

Ans 3:

Riddhik Bose from Vibgyor High, Airoli, Mumbai

Class : Class 9

Ans 4:

Midhuna from ABCD, Banglore

Class : Class 3

IDK

Ans 5:

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

Class : Class 8

I don't think A will be a short circuit, as the current is flowing through an electric appliance (the bulb in this case), while a short circuit is when positive and negative terminals are connected directly. But I think that A is the correct answer as in all the other circuits, the circuit is open.

Ans 6:

Arshia Kochhar from Delhi Public School Dwarka , New Delhi, Dwarka

Class : Class 8

so confusingggg

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Swarit from Indian School Wadi kabir, Muscat

Subject :NSO Class : Class 5

The diagram below represents part of the digestive system of a boy. X, Y and Z represent different substances that are being absorbed into the bloodstream at different parts as shown below.

Based on the diagram above which of the following best represents organ Q and substances X, Y and Z? Substance Substance Substance

	Organ Q	Substance X	Substance Y	Substance Z
A	Large intestine	Water	Digested	Undigested food
B	Large intestine	Digested food	Undigested food	Water
C	Anus	Water	Digested food	Undigested food
D	Anus	Digested food	Undigested food	Water

BAD QUESTION !!!!!!!!!!!!!!!!!!!!!!!

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Ans 1:

Aaditya Malhotra from Isaac Newton Global School, Mumbai

Class : Class 3

Ans 2:

Swarit from Indian School Wadi kabir, Muscat

Class : Class 6

BAD QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I AM ANGRY WITH U

Ans 3:

Debarpan Das from Delhi Public School , Durgapur

Class : Class 9

Ans 4:

Subhanshi Jha from DPS Vsant Kunj, New Delhi

Class : Class 7

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