National Science Olympiad Forum By SOF Olympiad Trainer - Page 646
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Anaadya from Arsha Vidya Mandir, Chennai
Subject :NSO    Class : Class 3

Ans 1:

saisavit from sri kumaran ps, bangalore
Class : Class 8
tough

Ans 2:

Vivaan Purwar from dpsnoida, Noida
Class : Class 5
tough question

Ans 3:

Aayan Choudhry from Yuvabharthi international school, Singapore
Class : Class 3
Anyone knows how s the solution determined?

Ans 4:

Goklani Harsh Hemantkumar from Seven Steps School, Surat
Class : Class 8
please provide justification

Ans 5:

SS from meridian, hyderabad
Class : Class 5
stop sof you are always wrongno one is corecct everyone may use you but you are wrong wong wrong

Ans 6:

Sanyam Gupta from DPS Noida, Noida
Class : Class 3
I am Sanyam Gupta This Question was very Interesting THANK YOU $$

Ans 7:

Yajat Mohapatra from DAV SCB Medical Public School, CUTTACK
Class : Class 3

Ans 8:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is C because the rule is followed -[ 7 - 6 ] [ 9 - 6 ] = 1 3 = 4[ 8 - 5 ] [ 9 - 2 ] = 3 7 = 10 [ 6 - 3 ] [ 5 - 4 ] = 3 1 = 4

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Sumit G from Greenwood High International, Bengaluru
Subject :NSO    Class : Class 6

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RONIK PATRA from RAHUL INTERNATIONAL SCHOOL, PALGHAR MUMBAI
Subject :NSO    Class : Class 3

Ans 1:

MAYANK from Jain Public School, REWARI
Class : Class 9
d

Ans 2:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI
Class : Class 3

Ans 3:

Nirvi Pal from jasudben ML School, mumbai
Class : Class 5

Ans 4:

Pankaj Rajput from RBK GLOBAL SCHOOL, THANE
Class : Class 4
NOOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!!!! i DONT BElive

Ans 5:

AARAVPRADEEP SAHU from PADMASESHADRI BALBHAVAN SENIOR SECONDARY SCHOOL, CHENNAI
Class : Class 3
corrwct yeeeee!!

Ans 6:

anu from The Amaatra Academy, Bengaluru
Class : Class 5
class:3the answer is D

Ans 7:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8
Pankaj, why are you telling no . It should option 'd'.

Ans 8:

Shruti from ,
Class : Class 1
it is right Soumyajit

Ans 9:

Avik Arya from Trileaves Global school , Chennai
Class : Class 3
The option is D correct

Ans 10:

Kashika Goel from DPS Noida, Noida
Class : Class 7

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Shreya Mangesh Patwardhan from City International school Satara road branch, PUNE
Subject :NSO    Class : Class 8

Ans 1:

Pushkar Sonnekar from Ryan International School, Mumbai, Vasai East
Class : Class 8
I think that option A and C should be correct. Since option A talks about fermentation occuring which could be true considering that yeast is put into warm sugar solution. Option C is also correct since we know that one of the end products of fermentation is CO2 and lime water turns milky white when it is combined with carbon-dioxide.

Ans 2:

Ethel shiju from National Public School Indiranagar, Bangalore
Class : Class 9
Option a is wrong because yeast does not convert sugar into lactic acid.

Ans 3:

B Krithika sulochana from Devi Academy senior secondary school, Chennai
Class : Class 8
Option C is the correct answer because yeast causes fermentation .Fermentation is an anaerobic process. In this process yeast converts sugar into alcohol and carbon dioxide. Lime water turns milky indicating the presence of carbon dioxide.

Ans 4:

Arnav Gangwar from DPS NOIDA, GAUTAM BUDH NAGAR
Class : Class 8
answer cant be A since during fermentation of sugar alcohol is produced and not lactic acid

Ans 5:

ARAVINDAN MANIKANDAN from NPS INternational, Singapore
Class : Class 8
Then option A should also be correct as it talks about fermentation

Ans 6:

Kabir Mendiratta from NCS , Kochi
Class : Class 8

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tanishka Bondhare from Saraswati international school , Hingoli
Subject :NSO    Class : Class 8

Ans 1:

Ethel shiju from National Public School Indiranagar, Bangalore
Class : Class 9
A vector diagram is a diagram which shows both direction and magnitude....hope you found it helpful!

Ans 2:

Zainab from St. Mary's Convent Inter College, Lucknow
Class : Class 8
A

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Swarnava Pal from Vivekananda Mission School, Haldia
Subject :NSO    Class : Class 3

Ans 1:

Darshil Rath from Sai International School , Bhubaneswar
Class : Class 7
Ans-d because if it is not scarce the house will flow away.

Ans 2:

Harshil Jain from DPS, Bangalore
Class : Class 3
The answer should be (A) but, why have they said that (D) should be the answer .

Ans 3:

Jasneet Bindra from Raghubir Singh Junior Modern School, New Delhi
Class : Class 3
fgdgcbcbc vccdhdhdgvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvbcbdfdhgdhvghvbvhfhhfudfdvbccjcccbcbcbdhdhssjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjssssssssssssssssssssssssssssssssssss

Ans 4:

Saachi Bhalgat from Vibgyor Yerwada, Pune
Class : Class 2

Ans 5:

Mohinder singh from Sacred heart convent school, Ludhiana
Class : Class 7
My answer was D but it changed itself as C

Ans 6:

vighneshwar from study hall, Lucknow
Class : Class 5
a

Ans 7:

Sidharth from Vibgyor , Navi Mumbai
Class : Class 3

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anwesha from v s n, midnapore
Subject :NSO    Class : Class 8

Ans 1:

Abhinav from nesss, vadodara
Class : Class 10

Ans 2:

Shreya Mangesh Patwardhan from City International school Satara road branch, PUNE
Class : Class 10
as static friction is always more than sliding friction and horse experiences static friction during its first steps.therefore option [A] is correct.

Ans 3:

Sahil Agrawal from GG International School, Pune
Class : Class 8
It has to be A

Ans 4:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
Yes A is correct

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Vimala from Narayana, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Aarush from Podar, Mumbai
Class : Class 10
why dont you tell it yourself

Ans 2:

Aarush from Podar, Mumbai
Class : Class 10
why dont you tell it yourself

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Vimala from Narayana, Bangalore
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Bhagyesh Kamal from DPS, Mumbai
Subject :NSO    Class : Class 6

Ans 1:

Ishaan Mishra from Sai International School, Bhubaneswar
Class : Class 7

Ans 2:

Kaustubh from modern vidya niketan, faridabad
Class : Class 7
the correct answer should be a as the snow slides off easily due to its cone shaped structure

Ans 3:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 4:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
Answer should be both a and c The solution they gave it is written a but the correct answer they wrote c

Ans 5:

Vikram from AVM, Mumbai
Class : Class 5

Ans 6:

likith from Delhi Public School International School, Singapore
Class : Class 7

Ans 7:

Pulkit Krishna from St. Paul's High School, Hajipur
Class : Class 6

Ans 8:

likith from Delhi Public School International School, Singapore
Class : Class 7
Answer should be both a and c

Ans 9:

Pulkit Krishna from St. Paul's High School, Hajipur
Class : Class 6
The answer is C. You should Know It.

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