National Science Olympiad Forum By SOF Olympiad Trainer - Page 568
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Shaurya Suryawanshi from The Orbis school, Pune
Subject :NSO    Class : Class 4

Post Your Answer

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

Tasneem from FAIPS, kuwait
Class : Class 6
c

Ans 2:

Pratik Gupta from MPS, Abu Dhabi
Class : Class 5

Ans 3:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 4:

Sharv Gupte from VIBGYOR HIGH NIBM, Pune
Class : Class 5

Ans 5:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 6:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
I am bengali , hindi , english and malayalam . This looks pity to me !!!!!!!!!!!!!!!!!!!

Ans 7:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Class : Class 7

Post Your Answer

vedant khatri from G D Goenka Public School Bareilly, bareilly
Subject :NSO    Class : Class 8

Ans 1:

anwesha from v s n, midnapore
Class : Class 10
DIt reflects the red colour and absorbs rest of the colours.

Post Your Answer

Soorya Tej R from Delhi Public School, Hyderabad
Subject :NSO    Class : Class 3

Ans 1:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
You are wrong.The correct answer should be D.

Ans 2:

Adrita Dey from Bishop Morrow School , Krishnanagar
Class : Class 3
I think you are right it should be D.

Ans 3:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
d is the answer

Ans 4:

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

Ans 5:

Siddhant Sahay from Ryan , Mumbai
Class : Class 3
Correct answer is D

Ans 6:

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

Ans 7:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9
the correct is D.

Ans 8:

Anargha Nandi from Bishop Morrow School, Krishnagar
Class : Class 6
You are right. It should be D.

Post Your Answer

Saransh Agrawal from Meridian School, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5
I agree Areen

Ans 2:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
The correct answer is A because Bituminous is not a ore, typhoid is a water-borne disease and rest are vector-borne disease and nutcracker is an example of 2nd class lever whereas all the other are 1st class lever.

Ans 3:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5

Ans 4:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is A because bituminous is not an ore, typhoid is not a vector-borne disease and nutcracker is not a class 1 lever.

Post Your Answer

Aniket Ghosh from DAV Public School Haldia, Haldia
Subject :NSO    Class : Class 6

Ans 1:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
answer is b

Ans 2:

Saanvi from rvk, bengaluru
Class : Class 9
the answer is b . this is because sun tan is temporary.

Post Your Answer

Kaustubh Doval from Mirambika Free Progress , Delhi
Subject :NSO    Class : Class 8

Ans 1:

Bhuvan vinod from Sentia The Global School, Hyderabad
Class : Class 9
IT must be D! Nylon does not burn with the smell of burning hair as it is purely synthetic and has no relation to the protein based hair.

Ans 2:

cherry from atomic energy central school-4, mumbai
Class : Class 9
yes the answer is D. nylon burns with a smell of celery because its a synthetic fibre.

Ans 3:

Nimish shah from Chrysalis high , Banglore
Class : Class 8
Correct answer is A

Ans 4:

ARNAB MANDAL from NAVY CHILDREN SCHOOL, VIZAG
Class : Class 9
nylon burns with a smell of plastic, not burning hair. WTF?

Ans 5:

S V Harini from Vailankanni public school , Krishnagiri
Class : Class 8
How is this possible Nylon burns with smell of hair???

Ans 6:

arnav raj sharma from gulibulium school, new york
Class : Class 8
(D)

Ans 7:

Abhinav Aggarwal from delhi public school, ghaziabad
Class : Class 8
wool burns with smell of burning hair

Ans 8:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
Nylon should neither have a smell of burning hair nor the smell of burning paper. Nylon has a celery or plastic-like cell. Hence the correct answer is D. But on the other hand when acrylic burns, it shrinks and converts into black beads. On this contrast, the correct answer will be B with respect to acrylic and D with respect to Nylon. There is definitely an error in the options of the answers!

Ans 9:

SAIRAM from TRIVENI TALENT SCHOOL, HYDERBAD
Class : Class 10

Ans 10:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
wrong answerthe answer should be B

Ans 11:

Karmanya Gupta from DPS, Udaipur
Class : Class 8
IT SHOU BE D!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 12:

Anshuman D from MVM, Hyderabad
Class : Class 9
Supposed to be D

Ans 13:

Pushkar Sonnekar from Ryan International School, Mumbai, Vasai East
Class : Class 8
It should be D. Because nylon would never once burn with smell of paper in it's entire career. SOF, you gotta chnage the answer man.

Ans 14:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
How can Nylon burn with the smell of burning hair??

Ans 15:

Akshara from NPS, Bengaluru
Class : Class 8
Nylon does not have the smell of burning hair. So the answer should be d.

Post Your Answer

from , Kolkata
Subject :NSO    Class : Class 8

Post Your Answer

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Subject :NSO    Class : Class 4

Ans 1:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4

Ans 2:

ALICE from Delhi Public School, UDAIPUR
Class : Class 9

Ans 3:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8

Ans 4:

Aditya Rai from Kv No.1 Icchanath, Surat
Class : Class 7
There is no explanation for the answer. How do we understand sof?

Ans 5:

om from jbcn, MUMBAI
Class : Class 4

Ans 6:

Ishan Manjith from Loyola ICSE, THIRUVANANTHAPURAM
Class : Class 4
@ishi gupta i know this is irrevelent but its not sob its sof

Ans 7:

Annlisa Castlia from BPS, HYD
Class : Class 5
But they are telling that the right answer is option d

Ans 8:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

Ans 9:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

Ans 10:

Soorya Tej R from Delhi Public School, Hyderabad
Class : Class 4
qwertyuiopasdfghjkkklzxcvbnm

Ans 11:

Sreejani Bhaduri from National Public School, Bangalore
Class : Class 10
Kqwertyuiopasdfghjklzxcvbnm,.-/:;(₹

Ans 12:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 9

Ans 13:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 14:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
there is air friction against gravity. so answer is B

Ans 15:

Ishan Kapilbhai Barochiya from Mayoor Private School , Abu Dhabi
Class : Class 8
Yea, pls explain this question to us SOF admin

Ans 16:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4

Ans 17:

Nihid Binoj from DPS International School Singapore, Singapore
Class : Class 4
qwertyuiopasdfghjklzxcvbnm,.-/:;(â1

Ans 18:

Samaira from Global Indian International School, Bangalore
Class : Class 8
I think c

Ans 19:

Ayushi from DPS Noida, Noida
Class : Class 4
Air always act as Frictional force against Gravity Hence ans is B in this case

Ans 20:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
There is no explanation for the answer. How do we understand sof?

Ans 21:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4
THERE IS NO SOLUTION SOB HOW CAN WE UNDERSTAND

Ans 22:

Aditya Rai from Kv No.1 Icchanath, Surat
Class : Class 7
There is no explanation for the answer. How do we understand Sof?

Post Your Answer

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Subject :NSO    Class : Class 5

Ans 1:

Piyush Kumar Pruseth from Sri Aurobindo Integral Education and Research Centre, Rajgangpur
Class : Class 5
Answer is A

Ans 2:

Atul Sanjeev from Indian School Al Ghubra, Muscat
Class : Class 9
the answer is A

Ans 3:

Praket Tejas from Delhi Public School Indira Nagar Lucknow, Lucknow
Class : Class 4
l

Ans 4:

Kanishk Rahul Shabadi from Elpro International school, Pune
Class : Class 6

Ans 5:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
why not B all the options are levers

Ans 6:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7
I

Ans 7:

Vihaan Binaykia from Riverside, AHMEDABAD
Class : Class 5
The answer could be both A or B because wheel barrows and screwdrivers are levers and wheel and axles

Ans 8:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
Yes

Ans 9:

Ramkrishna kaushik from guyfuyf, kjbkj
Class : Class 5
A

Ans 10:

Aadya Dholaria from Elpro International School, Pune
Class : Class 6
Admin please tell me ,how is escalator a pulley?

Ans 11:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
A

Ans 12:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7

Ans 13:

Piyush Kumar Pruseth from Sri Aurobindo Integral Education and Research Centre, Rajgangpur
Class : Class 5
Answer is A

Ans 14:

Pratham Dave from GNS, Bangalore
Class : Class 7
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 15:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
AAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 16:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5
A

Ans 17:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5

Ans 18:

Sreyan from NPS Koramangala, BANGALORE
Class : Class 6
A

Post Your Answer