National Science Olympiad Forum By SOF Olympiad Trainer - Page 661
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RONIK PATRA from RAHUL INTERNATIONAL SCHOOL, PALGHAR MUMBAI
Subject :NSO    Class : Class 3

Ans 1:

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

Ans 2:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

Shruti from ,
Class : Class 1
it is right Soumyajit

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

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

Ans 1:

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

Ans 2:

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 3:

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 4:

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 5:

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 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:

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

Ans 2:

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!

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

Ans 1:

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 2:

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

Ans 3:

vighneshwar from study hall, Lucknow
Class : Class 5
a

Ans 4:

Saachi Bhalgat from Vibgyor Yerwada, Pune
Class : Class 2

Ans 5:

Sidharth from Vibgyor , Navi Mumbai
Class : Class 3

Ans 6:

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

Ans 7:

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

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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:

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

Ans 3:

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

Ans 4:

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.

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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:

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 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:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Vikram from AVM, Mumbai
Class : Class 5

Ans 8:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 9:

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

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

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Nivedita Parikh from Children's Academy , Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9

Ans 2:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7

Ans 3:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is A because Bat is a mammal and gives birth to young ones while others lay eggs .

Ans 5:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7

Ans 6:

Aditi Saha from Bishops KalyaniNagar, Pune
Class : Class 4

Ans 7:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10

Ans 8: (Master Answer)

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

Ans 9:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
Bats are mammals and so they give birth to young ones.If they were not mammals,they would not have hair on their body.So, based on what is written above by me, it is clear that I think that the correct answer is option 'A'.

Ans 10:

Aditi Saha from Bishops KalyaniNagar, Pune
Class : Class 4
CORRECT ANS IS A AS BAT IS A MAMMAL AND MAMMALS GIVE BIRTH TO FULLY FORMED BABIES

Ans 11:

SARBESH KUMAR DASH from Kendriya Vidyalaya No. 1 SAMBALPUR , Sambalpur
Class : Class 5
correct answer is A

Ans 12:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 9
A is correct because bat gives birth to its babies while turtles, crocodiles and ducks lay eggs.....😊so my answer is ✅correct

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