National Science Olympiad Forum By SOF Olympiad Trainer - Page 412
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Ritabrata Das from OPJS, Angul
Subject :NSO    Class : Class 6

Ans 1:

Anushka Wasnik from DPS, nagpur
Class : Class 8

Ans 2:

Lakshmi from FPS, Bangalore
Class : Class 10
it is not C because burning of candle is reversible. I think answer is B

Ans 3:

Aarush Patil from St.Arnold's, pune
Class : Class 1

Ans 4:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Hey, the answer is C only. Because in burning of candle both melting and burning of wax is included right? Ya, so melting of wax is physical change (wax is still wax) and burning of wax is chemical change (wax turns to smoke). And both of these are irreversible. Now see an example. During Diwali we light tea lights, those small, circular candles, right? Have you ever observed it? First the wax melts into liquid wax, then if you don't blow the flame away, the wax burns away! These are CANDLES after all right? So this is how burning of candle is physical, chemical and irreversible change. This answer is written WITHOUT use of any website. Plz consider this as solution. SOF if you could add this as solution could you do that?

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armaan from bhavan, amritsar
Subject :NSO    Class : Class 5
nso

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Pavan from Kendriya Vidalaya DRDO, Bengaluru
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

hi nandika, how can we help you? as this forum is designed to solve SOF Olympiad related questions/queries, so use this platform to clear your doubts about these topics.

thanks

happy learning.


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Shaurya Veer from Army Public School ASC C and C , Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Kanishk Rahul Shabadi from Elpro International school, Pune
Class : Class 6
there is no diagram

Ans 2:

Jeisree kk from K.S.N secondary school , Chennai
Class : Class 7
No diagram = No answer as I don't know what's the diagram

Ans 3:

Ishanvi Bikram from delhi public school, bokaro steel city
Class : Class 6
There is no diagram?

Ans 4:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
What IS THIS????????????????

Ans 5:

Navya from Gyanshree, Noida
Class : Class 6
Yes, there is no diagram

Ans 6:

Siddhesh from Indian School Al Wadi Al Kabir, Muscat
Class : Class 7
Diagram is missing in the question

Ans 7:

Vedashri Raja from NPS INR, Bengaluru
Class : Class 5

Ans 8:

Aaradhay Awasthi from Dps Vasant Kunj, Delhi
Class : Class 7
I knew that this has a glitch so I reported an error for this question

Ans 9:

Anika Diljith from Vibgyor High Electronic City, Bangalore
Class : Class 7

Ans 10:

Yukta Jalasutram from Sunrise International School Abu Dhabi, Abu Dhabi
Class : Class 5
No diagrammm???

Ans 11:

JAYANTA BISWAS from APS Ranchi, RANCHI
Class : Class 5
No diagram in question

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ABHIRAM from chirec, HYDERABAD
Subject :NSO    Class : Class 7

Ans 1:

Tanushree from Asian International School, Colombo
Class : Class 7
The answer is A right?🤔🤔

Ans 2:

P Eswar Sattwic from Sancta Maria International School, Hyderabad
Class : Class 5
answer is option a

Ans 3:

Sherlock Holmes from Baker Street, London
Class : Class 9
The answer is A - Bacterium, Bacillus anthracis.

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SHRADHA MOHAPATRA from APEEJAY SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Samanyu from NPSI, Singapore
Class : Class 5
how is digestion involuntary?!

Ans 2:

sushanthan from null, null
Class : Class 7

Ans 3:

Samanyu from NPSI, Singapore
Class : Class 5

Ans 4:

Akshat Gajera from Widsom World school,Wakad, Pune
Class : Class 5
Ans-B

Ans 5:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
My answer is B

Ans 6:

Samanyu from NPSI, Singapore
Class : Class 5

Ans 7:

Tarun V from National public school, Bangalore
Class : Class 5

Ans 8:

SHRADHA MOHAPATRA from APEEJAY SCHOOL, New Delhi
Class : Class 5

Ans 9:

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

Ans 10:

Amaya Prabhu Bhadoria from TSRS Aravali , Gurugram
Class : Class 4

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Rishit Garg from Bhavan s B P Vidya Mandir , Nagpur
Subject :NSO    Class : Class 5

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Globallllllllllllllll warminggggggggg

Ans 2:

Saransh Singhania from Vidya Mandir estancia, Chennai
Class : Class 8
cccccccccc

Ans 3:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
nitrogen and sulphur are not greenhouse gases so NOT global warming

Ans 4:

Ankush Negi from Dehradun world school, Dehradun
Class : Class 7
Global warming

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Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Subject :NSO    Class : Class 6

Ans 1:

Raksheet Shah from Swami Vivekanad International School, Mumbai
Class : Class 8

Ans 2:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9

Ans 3:

saikrishna from bharatiya vidhya bhavans public school, Hyderabad
Class : Class 9

Ans 4:

Ronaldo from Dps, New Delhi
Class : Class 7
Yes it is kwakshiorkor

Ans 5:

Mukta Pundir from ,
Class : Class 7

Ans 6:

SOUMYA SHAMBHAVI JHA from PODAR INTERNATIONAL SCHOOL, MUMBAI
Class : Class 6
Vedang your answer is in the solution

Ans 7:

Sai Trinayanee from NPS, Chennai
Class : Class 6
Vedang Amonkar your answer is same as the solution

Ans 8:

Aarna Singh from Delhi Public School, Etawah
Class : Class 6
Answer should be B.

Ans 9:

saikrishna from bharatiya vidhya bhavans public school, Hyderabad
Class : Class 9

Ans 10:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune
Class : Class 7

Ans 11:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
umm............ SOF where is my solution?

Ans 12:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Class : Class 6
hey????!!!! Oh.......... Umm its me only.

Ans 13:

Sai Trinayanee from NPS, Chennai
Class : Class 6
Good explanation

Ans 14:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9

Ans 15:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Class : Class 6
P is protein, Q is fat, R is carbohydrate and S is vitamin C. Deficiency of proteins causes kwashiorkor whereas marasmus is caused by deficiency of proteins along with carbohydrate. Marasmus occurs in children usually in infants below the age of 1 year and kwashiorkor occurs in children.

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Saiesh from Sindhi high school, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Saksham Arora from DPS, Gurugram 102
Class : Class 9
a

Ans 2:

Chinmayee from Dimensions , Singapore
Class : Class 4
The correct answer is D

Ans 3:

Rudransh Shukla from Delhi Public School, Chandigarh
Class : Class 5

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is A

Ans 5:

Devanshi from Dps, Hyderabad
Class : Class 4
Answer is A

Ans 6:

Shreshta from Presidium, Ghaziabad
Class : Class 3
I think the answer is [A]

Ans 7:

Ishrita Rai from Sanskriti, pune
Class : Class 8
THE CORRECT ANSWER IS (A)

Ans 8:

Khanak Jha from Prime Academy, Mumbai
Class : Class 4
AAAAAAAAAAAAAis the answer

Ans 9:

Rishan Sandeep Gadhia from Orchids International, Mumbai
Class : Class 8
yes, the answer will be (a) as when we take such a leaf only the green part will be containing starch as it has chlorophyll in it and the other part does not , this is why only the green part will have the ingredients to make glucose(starch)and once iodine is added it turns blue and black

Ans 10:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
answer is A

Ans 11:

Naitik from Delhi Public School Noida, Noida
Class : Class 4

Ans 12:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is A

Ans 13:

SAI KRISHNA from SHISHYA BEML PUBLIC SCHOOL, BANGALORE
Class : Class 3

Ans 14:

SAI KRISHNA from SHISHYA BEML PUBLIC SCHOOL, BANGALORE
Class : Class 3
the correct answer is a

Ans 15:

Chinmayee from Dimensions , Singapore
Class : Class 4
I mean D, and I think it is D : )

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SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Subject :NSO    Class : Class 4

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