National Science Olympiad Forum By SOF Olympiad Trainer - Page 447
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Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Subject :NSO    Class : Class 4

Ans 1:

Shreyansh Saha from Dps Megacity, Kolkata
Class : Class 6
Option b

Ans 2:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 8
ACCORDING TO ME THE CORRECT ANSWER IS A

Ans 3:

Sovan from Salt lake ca, Kolkata
Class : Class 4
The correct answer is option ( B )

Ans 4:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
ans-B

Ans 5:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
how Z can be cotton

Ans 6:

UMA Subramanian from Global Indian International School, Singapore
Class : Class 7

Ans 7:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
b

Ans 8:

Avighna Shastri from doha modern indian school, doha
Class : Class 2
This question is kind of confusing for me

Ans 9:

Vedika from dps noida SEC-30, noida
Class : Class 4

Ans 10:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 5
( smashes window in anger when could not find out the the answer ) I actually did that

Ans 11:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 10
Ans -b

Ans 12:

Shanaya Gupta from Delhi Public School, Ludhiana
Class : Class 4
ACCORDING TO ME THE CORRECT ANSWER IS (A)

Ans 13:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is B its not A because all potatoes are roots so Sweet Potato is a root so the answer is A.

Ans 14:

Anjishnu Kamboj from ST.XAVIER SEC SE CO ed Bhopal, BHOPAL
Class : Class 5

Ans 15:

Sai Natesh Bysani from GLOBAL INDIAN INTERNATIONAL SCHOOL, Bengaluru
Class : Class 5

Ans 16:

Shaurya Srivastava from delhi public school, navi mumbai
Class : Class 6
complicated

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Hammad Zaheer from DAV PUBLIC SCHOOL, GOPALGANJ
Subject :NSO    Class : Class 4

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Pratheek from Null, Null
Subject :NSO    Class : Class 6

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Dushyant Singh from Shri Ram Centennial School, Indore
Subject :NSO    Class : Class 5

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Arushi from Indira National School, Pune
Subject :NSO    Class : Class 8

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Archishman Pal from Sri Krishna Mission School, Agartala
Subject :NSO    Class : Class 4

Ans 1:

mishika tripathi from DPS, Gurugram, Haryana
Class : Class 5
answer is C

Ans 2:

Ashlynn Bhatia from Modern Vidya Niketan Sr. Secondary School Sector - 17, FARIDABAD
Class : Class 4

Ans 3:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
The correct answer is C.

Ans 4:

Arnav Raj Sharma from Dpsvk, Gurgaon
Class : Class 9
meaning of piercing

Ans 5:

Isha singh from Delhi public school , Raipur
Class : Class 3

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Archishman Pal from Sri Krishna Mission School, Agartala
Subject :NSO    Class : Class 4

Ans 1:

Twisha Arora from Modern Vidya Niketan, Sector - 17, Faridabad, Haryana, FARIDABAD
Class : Class 7
No, you are wrong @Arini Das. The correct answer is B. Baking is a method for cooking only whereas canning and drying are methods of preservation. Boiling is a method of cooking as well as preservation so B is the correct answer.

Ans 2:

Arrni Das from St George School, New Delhi
Class : Class 8
Answer C is the right answer, as Boiling leads to water residue and fungal growth happens on storing. In the case of baking the food is dried up and can be stored for longer duration

Ans 3:

jathin from national public school chikkabanavara, banglore
Class : Class 4
ANSWER IS B

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Archana from Opg World School, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Archana from Opg World School, New Delhi
Class : Class 7

Ans 2:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
oye balle balle dhe shava shava, balle balle dhe shava shava, pio pio re kava kava, gana khatham hua

Ans 3:

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

Ans 4:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3

Ans 5:

Rishita kundu from Dav Public School taratala,Kolkata, Kolkata
Class : Class 5

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Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 4

Ans 1:

Ankush Dey from Sri Chaitanya Techno School Newtown, Kolkata
Class : Class 6
How come 'Silverfish' has 6 legs?Ankush

Ans 2:

vineet8026@gmail.com from dps, Doha
Class : Class 1

Ans 3:

Ishan Manjith from Loyola ICSE, THIRUVANANTHAPURAM
Class : Class 4
Silver fish is not fish dumbosIt is insect it acts like a ground moth it eats fabric

Ans 4:

Sourangshu Mallick from GIIS, Singapore
Class : Class 2

Ans 5:

Manjeer Chakraborty from La Martinierefor Girls,Kolkata, Kolkata
Class : Class 5
Yes silverfish has 6 legs . I think it is an insect not a fish . I checked the google

Ans 6:

Archishman Pal from Sri Krishna Mission School, Agartala
Class : Class 9

Ans 7:

vineet8026@gmail.com from dps, Doha
Class : Class 1

Ans 8:

Rishit goyal from St Peter's College, Agra
Class : Class 8

Ans 9:

Isha singh from Delhi public school , Raipur
Class : Class 3

Ans 10:

Samarth Vijay Yeliathaya from Shri Kumarans Children home,cbse, Bangalore
Class : Class 5
this is crazy

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Sarah Ishika Dowerah from Delhi Public School, Numaligarh
Subject :NSO    Class : Class 7

Ans 1:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
It should be 1 and four, the option of which is not given.

Ans 2:

Arin Das from Delhi Public School Nacharam, Hyderabad
Class : Class 8
The correct option is answer c Containers 1,2,4

Ans 3:

DIVYA SRIRAM from YUVABHARATHI INTERNATIONAL SCHOOL, SINGAPORE
Class : Class 9
Magnetic separation can only be used in the cases in which one constituent is magnetic and the other is not. In case one Copper is not magnetic and iron is. In the second case Aluminium is not magnetic and Steel is. nIn the third case both the objects gold and the glass marble are non magnetic objects and hence magnetic separation cannot be used in this case. In the last case both Nickel as well as Steel are magnetic and thus magnetic separation cannot be used. So, magnetic separation can only be used in case 1 and case. Hence the answer is A

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