National Science Olympiad Forum By SOF Olympiad Trainer - Page 479
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Khushi Chaudhuri from Step By step, Noida
Subject :NSO    Class : Class 8

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Tamojeet Sanyal from Don Bosco, Kolkata
Subject :NSO    Class : Class 4

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SRISANTH from Edify, Tirupathi
Subject :NSO    Class : Class 4

Ans 1:

SRISANTH from Edify, Tirupathi
Class : Class 5
D is the correct answer

Ans 2:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
Thanks Ashwak

Ans 3:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
D is the answer because when we put talcum powder on the board, the carrom is easy to slip. Therefore, it reduces the force that keeps us from slipping while we are walking.

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I agree, D is the correct answer.

Ans 5:

Khanak Jha from Prime Academy, Mumbai
Class : Class 4
Even I agree

Ans 6:

Aarvi Gosai from The New Tulip International School, ahemdabad
Class : Class 4
wrong none of these talcum powder makes the board slippery so it is easier to play so how won't it make us slip

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Advaitt S Koduri from Presidium Noida 31, NOIDA
Subject :NSO    Class : Class 3

Ans 1:

aarav m from kumarans, bengaluru
Class : Class 3
Ussain Bolt

Ans 2:

Soham Nandy from The Frank Anthony Public school, Bangalore
Class : Class 3
Usain Bolt

Ans 3:

aarav m from kumarans, bengaluru
Class : Class 3
Ussain Bolt

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

Hamsini from yagappa international school, Thanjavur
Class : Class 5
d is the answer

Ans 2:

Arpit Sahoo from SAI International School, Bhubaneswar
Class : Class 7
D

Ans 3:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
B

Ans 4:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
B

Ans 5:

Hamsini from yagappa international school, Thanjavur
Class : Class 5

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Kanav Dhingra from DPS sec45, Gurgaon
Subject :NSO    Class : Class 4

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Kshitij from Sams, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Aryadeep Sen from The Calcutta Boys School, Kollkata
Class : Class 7

Ans 2:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8
asdfghjklz

Ans 3:

Devaj Parekh from Choithram School North Campus, Indore
Class : Class 7
Answer A is correct

Ans 4:

abhijit majhi from de paul school, berhampur
Class : Class 6
wrong

Ans 5:

rashi from rosary, delhi
Class : Class 6

Ans 6:

Mishika from Delhi Public school, Chandigarh
Class : Class 6
answer should be a

Ans 7:

Mantavya Dixit from DAV Shreshtha Vihar, Delhi
Class : Class 7
C

Ans 8:

Ahana Mandal from Delhi Public School Asansol , Asansol
Class : Class 6

Ans 9:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8
it is a!!!!

Ans 10:

abhijit majhi from de paul school, berhampur
Class : Class 6
asdfghjkl;

Ans 11:

Ahana Mandal from Delhi Public School Asansol , Asansol
Class : Class 6

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Kshitij from Sams, Bangalore
Subject :NSO    Class : Class 6

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ARSHAD RAIHAAN from BVM GLOBAL, CHENNAI
Subject :NSO    Class : Class 6

Ans 1:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 10
C,as the wheat plants decrease in number.

Ans 2:

Ashi Goyal from Sacred heart convent school,raikot road,barnala, punjab
Class : Class 6

Ans 3:

Aarav Malviya from INDIAN SCHOOL SALALAH, SALALAH
Class : Class 7
In a field research, some rats were kept in a wheat field. Their presence in the wheat field would affect the number of wheat plants over a certain period of time.Rats burrow in the soil of wheat field and cause damage to the crop roots. So, the number of wheat plants would fall over a period of time. Rats also feed on ripening ear heads and ripened grains. So, their population would increase fast. The more they are in number, the more damage they would cause to the plant roots, and the more grains they would eat.So, the number of wheat plants in the field would keep decreasing.The following graph would show the change in the number of wheat plants correctly:In the above graph, the number of wheat plants is constantly falling over a period of time. Hence, the right answer is Option C.

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Smita De from Bishop Cotton Girls School, BANGALORE
Subject :NSO    Class : Class 5

Ans 1:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7
It will be option D. It will be D as it can be understood from the pictures that S is a room heater which is run by electric. Heat comes out of it. It is therefore used to keep our surroundings warm. Thank you .

Ans 2:

Divyanshi from United international School, Bangalore
Class : Class 6
but others also produce heat energy?

Ans 3:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

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