National Science Olympiad Forum By SOF Olympiad Trainer - Page 675
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Ethel shiju from National Public School Indiranagar, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

Student from School, City
Class : Class 8

Ans 2:

stavya from dps noida, noida
Class : Class 8
the soultion is wrong beacuse the literal defination of spontaneous combustion tells us that it happens at room temprature without application of heat by external source

Ans 3:

Divij Narang from ,
Class : Class 9

Ans 4:

Bhuvanesh Singla from SCTS, Bengaluru
Class : Class 8
Hi, the statement 2 is true but just tells about the type type combustion to which the reaction given in statement belong. it does not tell about actual cause of burning of phosphorus in air at room temperature. the reason for statement 1 is that phosphorus is a highly reactive element that's why burns in air at room temperature.

Ans 5:

Soham from Vibgyor high, Pune
Class : Class 8

Ans 6:

Yash Bindal from Global Indian International School, Singapore
Class : Class 9

Ans 7:

arnav from the gurukul, Panchkula
Class : Class 5

Ans 8:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Actually, the solution is opposite to the correct answer

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Ethel shiju from National Public School Indiranagar, Bangalore
Subject :NSO    Class : Class 8

Ans 1:

Triguna from Kendriya Vidyalaya No.1 Salt Lake, Kolkata
Class : Class 8
Why so? In both the cases soybean is present.

Ans 2:

Paarth Vashistha from Kunskapsskolan Gurgaon , Gurgaon
Class : Class 8

Ans 3:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
yeah right Triguna!!! in both cases soybean is present? why so?

Ans 4:

S V Harini from Vailankanni public school , Krishnagiri
Class : Class 8
Think in the way of leguminous crops

Ans 5:

Anshuman D from MVM, Hyderabad
Class : Class 9
Supposed to be only ABecause mustard is a non leguminous plantEven it can be rotated with soyabean

Ans 6:

Aadavamoorthy from Advaith International Academy, Hosur
Class : Class 9
Both Wheat and Maize require rotation of crops.

Ans 7:

Sumedha Mishra from xyz, School, Pune
Class : Class 8

Ans 8:

Aadavamoorthy from Advaith International Academy, Hosur
Class : Class 9

Ans 9:

MandarPalkar from KV DRDO, Bangalore
Class : Class 8
The protein requirement of mustard is fulfilled by the ribozome present in root nodules of soyabean?

Ans 10:

SIDDHI SHREYASH from Phoenix Green International School , Hyderabad
Class : Class 9

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Anurag Basistha from Prudence School Dwarka 16 B, Delhi
Subject :NSO    Class : Class 6

Ans 1:

Kshitij from Sams, Bangalore
Class : Class 6
they MUST and SHOULD be more CAREFUL. No options??? Then, how should we answer their question??? they take no actions! look:-a person has commented a year ago but?NO RESPONSE

Ans 2:

Riddhi from St Ursula high school, PIMPRI CHINCHWAD
Class : Class 6
No options

Ans 3:

Pulkit Krishna from St. Paul's High School, Hajipur
Class : Class 6
The shadow will be whole black as the book is an opaque object and will not allow any light to pass through it so on the screen it will form a shadow. And the rest that is the ring, no light will reach it thus how can its shadow be formed?

Ans 4:

Ankush Ghosh from DPS, Doha
Class : Class 10
no options

Ans 5:

Ritika Bakshi from Techno India Group public School Hooghly, Chinsurah
Class : Class 7
Want option!

Ans 6:

Bharat from Geetanjali Olympiad school, Bangalore
Class : Class 9
they did not give options

Ans 7:

Ishaan Mishra from Sai International School, Bhubaneswar
Class : Class 7
I typed in c. What is this?

Ans 8:

khushi Joshi from Svkm , Mumbai
Class : Class 10
They did not give the options on my iPad so I couldn't see which was the correct ans. something needs to be done about this problem.

Ans 9:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
they didnt give the options

Ans 10:

Bhabani Prasad from Narayan School, Kolkata
Class : Class 6
They did not give options on my ipad .

Ans 11:

Aniket Ghosh from DAV Public School Haldia, Haldia
Class : Class 9

Ans 12:

Anmol kathar from deogiri global academy, aurangabad
Class : Class 10
they didn't given on question page so all my friends and I missed that question

Ans 13:

Arnav Raj Sharma from Dpsvk, Gurgaon
Class : Class 9
my laptop din't provide the options

Ans 14:

Naman from Svm, Nalasopara
Class : Class 6
options are missing

Ans 15:

Ahaan Pathak from Treamis World School, Bangalore
Class : Class 8
they didn't give the options to my computer

Ans 16:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
iT IS NOT LAPTOP'S MISTAKE IT IS THE WEBSITE'S MISTAKE ITSELF.

Ans 17:

BHAVYA JHA from GLOBAL CITY INTERNATIONAL SCHOOL, BANGALORE
Class : Class 6
they should be more careful

Ans 18:

Aarush Laddha from NCFE, bengaluru
Class : Class 6
They did not provide options on my laptop but option C is correct.

Ans 19:

Souvik Bhattacharya from MVM, Hyderabad
Class : Class 10
I got the question with the options in my laptop. For those who did not get the options : it is the website's fault

Ans 20:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
They did not give options so that is why it went wrong. these kind of incidents happen very frequently in SOF

Ans 21:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9

Ans 22:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
They didn't give options

Ans 23:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
NO OPYIONS!

Ans 24:

Raghav from Shalom Hills International school, Gurgaon
Class : Class 6
They're not even giving me options

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Anshu Manglik from Delhi Public School, Gurgaon
Subject :NSO    Class : Class 4

Ans 1:

Pankaj Rajput from RBK GLOBAL SCHOOL, THANE
Class : Class 4
c

Ans 2:

Rishi from Deens Academy, BENGALURU
Class : Class 9
B C D is the answers

Ans 3:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
ACTUALLY I DISAGREE WTH my PAST SELF SAYING c IT IS d

Ans 4:

Madhura Mageshwaran from zurich school, zurich
Class : Class 6
This is actually multiple Answer Q.It is silly!!!

Ans 5:

Vrishank Sai Anand from GEMS Modern Academy, Dubai
Class : Class 9
the correct answer should be C

Ans 6:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
C

Ans 7:

arsh from nps, bangalore
Class : Class 4

Ans 8:

Suniti Kumar Ghosh from Holy Angels' School, Katwa
Class : Class 8
Correct answer is, C

Ans 9:

Vibha from Birla Public School, Doha
Class : Class 7
THE CORRECT ANSWER IS D BECAUSE THEY NEED TO OVERCOME DEFICIENCY OF NITROGEN

Ans 10:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
B,Care correct as they can not do photosynthesis , uses his leaves to catch food

Ans 11:

Saiesh from Sindhi high school, Bangalore
Class : Class 4
Correct answer is C

Ans 12:

Chinmay S Amboori from Adani Public School, Mundra
Class : Class 7
Answer should be C and D.

Ans 13:

Kriti Bhonsale from Delhi Public School, Bengaluru
Class : Class 5
D is correct

Ans 14:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow
Class : Class 7
c and d are both the answers i think

Ans 15:

Anjishnu Kamboj from ST.XAVIER SEC SE CO ed Bhopal, BHOPAL
Class : Class 5
Correct answer is D.Because insectivores plants can photosynthesise.

Ans 16:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
d

Ans 17:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7

Ans 18:

sankerths s from Shishya BELM public School, Bangalore
Class : Class 10
correct ans is C

Ans 19:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
I think Dalso

Ans 20:

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

Ans 21:

Brinda Modi from Orchids International School, Pune
Class : Class 6
Yes, it is a multiple answer question.

Ans 22:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8

Ans 23:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 7
c

Ans 24:

Manan thorat from Podar powai, Mumbai
Class : Class 4
Its just sooo Confusing Tel the logi I dont understand!!

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from Queen of angel, bharuch
Subject :NSO    Class : Class 3

Ans 1:

Shreya from RCIS , MY SORE
Class : Class 3
U

Ans 2:

Shreya from RCIS , MY SORE
Class : Class 3
U

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Bhabani Prasad from Narayan School, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
i agree with Gauri Singh and Kashvi Sharma

Ans 2:

Prisha Shah from Euroschool Airoli, Mumbai
Class : Class 6
Answer B is right because if you refer to the 4th grade book, the first point written is to tilt your your head back

Ans 3:

Kashvi Sharma from Jankidevi Public School , Dausa
Class : Class 9
Yes,In the book it is said that the patient should be made sit and lean forward not backward and patient should be told to pinch the sides of the nose together. So the answer should be C.

Ans 4:

likith from Delhi Public School International School, Singapore
Class : Class 7
Option C is correct

Ans 5:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8

Ans 6:

Siddhanth Subramanian from Global Indian International School , Singapore
Class : Class 7
option c is correct

Ans 7:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5
option c is correct

Ans 8:

Jasmine Kaur from Venkateshwar International School , New Delhi
Class : Class 5
On page 75 of "Learning Science for Smarter Life" for class V it is mentioned that person should sit down and lean forward. It also says to pinch the nose.All answer choices of this question are therefore incorrect.

Ans 9:

A Andrew from Lalaji Memorial Omega International School, Chennai
Class : Class 5
yes. Gauri Singh is right . option c is right .

Ans 10:

Gauri Singh from St. John's School, Marhauli, Varanasi
Class : Class 10
Option C is right

Ans 11:

Dushyant Singh from Shri Ram Centennial School, Indore
Class : Class 6
option b is correct because by sitting with his head facing up wards would take the blood flow downside

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DIBYAJYOTI ROUTRAY from Stewart school, Cuttack
Subject :NSO    Class : Class 6

Ans 1:

Pulkit Krishna from St. Paul's High School, Hajipur
Class : Class 6
The answer is A. You should Read the book twice again. But even then also you think that the answer is B than the book is a spam. Adaptation is the permanent feature of an organism which helps it to survive in its habitat, while acclimatisation is a temprory feature or change in feature of an organism which helps it to survive in any other place rather than its habitat......................................................................

Ans 2:

Pratheek from Null, Null
Class : Class 4
Acclimatization and adaptation mean two totally different things. Adaptation means permanent adjustment to our habitat whereas acclimatization means temporary adjustment to a place where we temporarily stay for some time and get used to. In my opinion, option A is the right answer.

Ans 3:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 4:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 5:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 6:

Pratheek from Null, Null
Class : Class 4

Ans 7:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 8:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 9:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 10:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

Ans 11:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
the answer should "a" as acclimatisation not adaptation

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Saksham Kaushal from Ahlcon International School, Delhi
Subject :NSO    Class : Class 5

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Shreyas from VPEMS, Baramati
Subject :NSO    Class : Class 4

Ans 1:

Niteen Jit Sahu from Diya Academy of Learning, Bengaluru
Class : Class 7
it is the wrong answer if everybody start replying the answer is wrong,so the heads might change it.

Ans 2:

Shreyas from VPEMS, Baramati
Class : Class 4

Ans 3:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
answer is B

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HARSHAL KUTE from cambridge school buldhana, Buldhana
Subject :NSO    Class : Class 6

Ans 1:

S SAHITHYAA RAMAN from Padma Seshadri T Nagar, Chennai
Class : Class 7
No.it has muscle like organs which produces a slimy substance on which the snail moves on using bristles situated under its body

Ans 2:

S SAHITHYAA RAMAN from Padma Seshadri T Nagar, Chennai
Class : Class 7
Answer is c

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