National Science Olympiad Forum By SOF Olympiad Trainer - Page 358
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Shishir singhal from Cambridge Court High school , JAIPUR
Subject :NSO    Class : Class 9

Post Your Answer

IAMLOST from ABC, Pune
Subject :NSO    Class : Class 4

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
My sister also says that she had same question just the name was different and she gave same answer and that time too answer was wrong. Now tell me the answer until 19.11.2019

Ans 2:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
To SOF New Delhi and Master answer Revisewise Noida I hope you are ready to answer my question once again after you gave different answers in the workbook and the website and I got more than 100 likes for that question and the master answer wasn't giving the answer. So read what I have typed below.Please answer: How does "drilling a hole into a metal sheet" cause friction? Please answer as soon as possible (ASAP).From Ashmi Narkar Grade 4SOF Student Vibgyor High Airoli

Ans 3:

Lamjingrenba Kshetrimayum from Kulachi Hansaraj Model School, North Delhi
Class : Class 4
To Ashmi Narkar-Drilling a hole into a metal sheet cause friction as,because of the friction it is able to drill in the metal sheet and make a hole in it!I hope this helped you!

Post Your Answer

Ritabrata Das from OPJS, Angul
Subject :NSO    Class : Class 6

Ans 1:

Anushka Wasnik from DPS, nagpur
Class : Class 8

Ans 2:

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

Ans 3:

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?

Ans 4:

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

Post Your Answer

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

Post Your Answer

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.


Post Your Answer

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 5
there is no diagram

Ans 2:

Anika Diljith from Vibgyor High Electronic City, Bangalore
Class : Class 6

Ans 3:

Siddhesh from Indian School Al Wadi Al Kabir, Muscat
Class : Class 6
Diagram is missing in the question

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:

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

Ans 7:

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

Ans 8:

Ishanvi Bikram from delhi public school, bokaro steel city
Class : Class 5
There is no diagram?

Ans 9:

Jeisree kk from K.S.N secondary school , Chennai
Class : Class 6
No diagram = No answer as I don't know what's the diagram

Ans 10:

Aaradhay Awasthi from Dps Vasant Kunj, Delhi
Class : Class 5
I knew that this has a glitch so I reported an error for this question

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Post Your Answer

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

Sania was asked to write about some actions which are voluntary in nature. She has written some involuntary actions too. Pick the involuntary actions written by Sania from the list given below.
(i) Chewing food
(ii) Sitting upright on a table
(iii) Digestion of food
(iv) Beating of heart
(v) Singing a song
(vi) Dancing
(vii) Breathing

A (i), (iii) and (v)
B (iii), (iv) and (vii)
C (ii), (iii) and (vi)
D (v) and (vii)


Ans 1:

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

Ans 2:

Samanyu from NPSI, Singapore
Class : Class 5

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

Samanyu from NPSI, Singapore
Class : Class 5

Ans 8:

sushanthan from null, null
Class : Class 7

Ans 9:

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

Ans 10:

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

Post Your Answer

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:

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

Ans 4:

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

Post Your Answer

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

Given below are the four food components (P-S) and their corresponding sources.
P – Meat, Fish, Egg
Q – Butter, Ghee, Margarine
R – Bread, Biscuit, Potato
S – Amla, Tomato, Orange
Select the incorrect statement regarding them.

A Deficiency of P causes marasmus in children whereas deficiency of Q causes kwashiorkor in adults.
B Among P, Q, R and S, 1 gram of Q produces the maximum energy.
C Excess of R gets stored in body cells and is used for production of energy whenever required.
D Deficiency of S leads to a disease in which gums swell up and bleed.


Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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.

Ans 7:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 7
umm............ SOF where is my solution?

Ans 8:

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

Ans 9:

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

Ans 10:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 8

Ans 11:

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

Post Your Answer