National Science Olympiad Forum By SOF Olympiad Trainer

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru

Subject :NSO Class : Class 2

Zarrin looked at the Moon from her window. It was shining brightly in the sky. Where does the light come from, which makes the Moon shine ?

A The Moon gets its light from the Sun.
B The Moon has its own light.
C The Moon gets its light from satellite.
D The Moon gets its light from the Earth.

Can you please help me understand this question before this Tuesday.

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Saanvi from Dehli Public School , Gurugram

Subject :NSO Class : Class 7

A laboratory thermometer gave the reading of 1°C and 99°C when inserted into melting ice and boiling water respectively, both at standard atmospheric pressure. What is the error when the same thermometer is used to measure the difference between two arbitrary temperatures?

A1°C
B1°C
C0°C
D2°C

Option A and B are the same.

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Ans 1:

Hritvi from Podar International School, Mumbai

Class : Class 7

how can one answer be in 2 options.

Ans 2:

Neev V Sawant from Montfort Senior Secondary School, Roorkee

Class : Class 7

Ans 3:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai

Class : Class 7

Even though option a and b are same the correct answer is c

Ans 4:

Rangnath sharma from MOUT LITERA ZEE SCHOOL, PATNA

Class : Class 9

wrong

Ans 5:

Adwait Shiva from Udgam School For Children, Ahemdabad

Class : Class 9

They really should give as detailed exp as in mock test

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Harini from vibgyor high, bangalore

Subject :NSO Class : Class 4

Ravi has met with an accident. Now, he cannot move his left leg, even if he wants to. Doctor says, may be that his _________ system is damaged.

ADigestive
BRespiratory
CNervous
DExcretory

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Ans 1:

lavanya santosh pote from holy write, BADLAPUR

Class : Class 6

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Ans 2:

Sashrika Pasunoori from KV Gachibowli, Hyderabad

Class : Class 5

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Ans 3:

Bhanu V from World One , Hyderabad

Class : Class 4

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Ans 4:

Nishtha Shukla from Sri Chaitanya Techno School, Gurgaon

Class : Class 8

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Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru

Subject :NSO Class : Class 2

A word is encircled in each option which does NOT belong to the group.
In which option INCORRECT word is encircled for the group?

A Stamps, Postcard, Letter box
B Newspaper, Radio, Television,
C Telephone, E-mail, Postcard
D Telegram, Television, Parcel

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Ans 1:

Shaarav Dutt from Delhi Public School, NOIDA

Class : Class 2

Ans 2:

Aarav nikalji from Apeejay school nerul , Navi Mumbai

Class : Class 4

yes

Ans 3:

Sourav Jena from ODM public school , BHUBANESWAR

Class : Class 4

D

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha

Subject :NSO Class : Class 6

Refer to the given Venn diagram and select the correct option regarding X and Y.

AX could be DDT whereas Y could be bones.
BX could be human faeces whereas Y could be scissors.
CX could be rotten vegetables whereas Y could be cardboard.
DX could be cowdung whereas Y could be dried leaves.

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Ans 1:

Ashwak from Cambridge, Jalandhar

Class : Class 9

I think it is because Y

Ans 2:

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

Class : Class 9

That's what, how can scissors be waste product? Aarsh is right

Ans 3:

Krithi Manasvini from Alwin Memorial Public School, Chennai

Class : Class 7

I think Scissors can be a waste product if the get rusted

Ans 4:

Ashwak from Cambridge, Jalandhar

Class : Class 9

Sorry for the incomplete answer I think it's because Y is not in the biodegradable So it should be non biodegradable and only scissors are non biodegradable

Ans 5:

Aarsh Kumar Singh from Kendriya Vidyalaya , Mumbai

Class : Class 6

How could scissors be a waste product?

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AARNA Kapse from The swaminarayan school, Nagpur

Subject :NSO Class : Class 2

What do the given sign boards indicate?

(1) School ahead
(2) Do not honk
(3) Cross road at zebra crossing
(4) Drive slow

A Only 1
B 2 and 3
C 1 and 4
D Only 2

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Ans 1:

Karthik from Euro, Bengaluru

Class : Class 7

Ans 2:

Seeraj Arora from DPS Noida, Noida

Class : Class 5

Answer should be "School Ahead"

Ans 3:

Pratysh Parth Naik from GEMS MODERN ACEDEMY, DUBAI

Class : Class 2

Ans 4:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru

Class : Class 8

THE ANSWER IS School ahead

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha

Subject :NSO Class : Class 6

The given figure shows an electric circuit in which a lamp L is connected. What happens to the brightness of the lamp L when the switch S is closed? (Box represents extra resistance in the circuit.)

AIt becomes dimmer.
BIt becomes brighter.
CIt goes off.
DIt remains the same

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Ans 1:

PREYA MANJU GARG from lotus valley international school, NOIDA

Class : Class 7

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Tanishka Pasricha from Sheiling House School, Kanpur

Subject :NSO Class : Class 5

Which one of the following is not a mammal?

A
B
C
D

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Ans 1:

Sanyog Laddha from Global Indian International School, Pune

Class : Class 6

Ans 2:

Saloni Singh from JPHS, Jaipur

Class : Class 4

kljnh gvbnjkmojhbgv bjnknihbgvu bnkkghjihugvbuhnij

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Ayaan jamal from Dddddd, Delhi

Subject :NSO Class : Class 8

Refer to the given figure and select the incorrect statement regarding this.

A P represents the human male gamete which consists of head, middle-piece and tail.
B Q represents the human female gamete which is a single cell.
C The process shown in the figure is fertilisation.
D The resulting structure formed after the shown process is fetus.

it should not be fetus but zygote

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Ans 1:

Aditya Soni from Saint Xavier School, hariyana

Class : Class 8

D

Ans 2:

Aditya Soni from Saint Xavier School, hariyana

Class : Class 8

D is the answer as it is incorrect

Ans 3:

Chaheli Virendra Jain from Horizon Academy, Nashik

Class : Class 8

Answer D because it is not fetus but zygote formed after process of fertilisation

Ans 4:

Amrit Biswas from INDUSVALLEY PUBLIC SCHOOL, Noida

Class : Class 10

D cuz its zygote

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Vanshika Gupta from Kulachi Hansraj Model School, Delhi

Subject :NSO Class : Class 5

Which of the following words cannot be formed from the letters of the given word?

COMPOSITE

ATime
Bpost
Cmost
Dposter

right answer is option d

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Ans 1:

Ujjwal Upadhyay from Navy Children school, Vasco

Class : Class 6

Then why are you asking for the answer if you know it???

Ans 2:

Ujjwal Upadhyay from Navy Children school, Vasco

Class : Class 6

Then why are you asking for the answer if you know it???

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