National Science Olympiad Forum By SOF Olympiad Trainer - Page 544
  1. Home
  2. /  Forum

User Forum

Ask Your Question
aditya arora from Heritage Experiential Learning School, gurugram
Subject :NSO    Class : Class 6

Ans 1:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10
The correct answer is option B . A compass may be used to find East and west direction . Once you find North and South , by facing north , the right side will be East and left one will be West

Ans 2:

Abhiram Vedula from Deens Academy, Gunjur, Bangalore
Class : Class 8
both b and d are correct.

Ans 3:

Shreyasi Padihary from National Public School East , Bengaluru
Class : Class 7
The answer could be B and D as both are correct

Ans 4:

Charunainika A L from SILVER HILLS HSS, Kozhikkode
Class : Class 6
Also, d is right. Attraction is a sure test for magnetism. both b and d are right. Compromised?

Post Your Answer

Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
Please correct it

Ans 2:

Bertrand Calvin Fernando from Redwood high International School, mumbai
Class : Class 6

Ans 3:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 4:

Siddhant Singhania from The Assembly of God Church School, Purulia, Purulia
Class : Class 8

Ans 5:

Pratham Dave from GNS, Bangalore
Class : Class 7
2 and 4 is the answer to this question

Ans 6:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8
as per Wikipedia no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 7:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
How is 1 correct? Please reply

Post Your Answer

Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Prashant MD from Ambassador School Dubai, Dubai
Class : Class 5

Ans 2:

Sonika from Delhi public school, Faridabad
Class : Class 7
THERE CHECKING IS WRONG AS ANSWER IS C

Ans 3:

Harsh Gupta from saint anslems pink city jaipur , Jaipur
Class : Class 5
Both A and C are correct

Ans 4:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6
cerebrum is the largest part of the brain. cerebellum is the second largest part and it controls musculo-skeleton movement

Ans 5:

Ayushman from Adamas International School, Kolkata
Class : Class 6
Correct answer should be d because cerebellum is below cerebrum, located towards the back of the brain.

Ans 6:

Pratham Dave from GNS, Bangalore
Class : Class 7
B is the answer to this question but it is showing A as correct option and it is showing B as correct option in the solutions.

Ans 7:

inaira heredia from Jamnabai narsee international school, MUMBAI
Class : Class 5
It says which option is incorrect not which one is correct

Ans 8:

rajanya mandal from j h ambani, surat
Class : Class 4

Ans 9:

Fateh Singh Nanda from Gems modern academy, Dubai
Class : Class 6

Ans 10:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8
This question is correct

Ans 11:

Navya GUPTA from dps noida, Noida
Class : Class 3
This is absolutely correct as y is cerebrum and x is. EllThis Is absolutely correct as y is cerebrum X is cellebellum and Z is the Medulla ✅✅✅✅

Ans 12:

vayurve gowda from narayana group of schools, chennai
Class : Class 6
this question is wrong

Post Your Answer

Devansh from asn senior secondary school, delhi
Subject :NSO    Class : Class 3

Ans 1:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
A

Ans 2:

Mohi from Vibgyor, Bangalore
Class : Class 6
A

Post Your Answer

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Subject :NSO    Class : Class 6

Ans 1:

Arsh from Lahs, Gwalior
Class : Class 3
ayush u are right!!!!!!!!!!!!!!!

Ans 2:

Rachna Jo from HIS, BLR
Class : Class 3
correct option is C, not B. Please make correction.

Ans 3:

Arjun gupta from Dps noida , Noida
Class : Class 7
why arent they changing the answer

Ans 4:

arpan bar from Future Bhubaneswar School, BHUBANESWAR
Class : Class 7
Given correct answer and explanation do not match...please rectify...

Ans 5:

Shivani from DPS North school , Bangalore
Class : Class 7
There is no option only for the answer they had provided us with, gave the correct explanation but the need to correct the answer as well.

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 9
YES , their answer is not matching with their solution !!

Ans 7:

Surya from INDIAN SCHOOL JALAN OMAN, Alkamil oman
Class : Class 7
they aren't giving the answer and the solution same in some papers

Ans 8:

Ayan Gupta from sdf public school, GAUTAM BUDDHA NAGAR
Class : Class 9
The correct is NSN

Ans 9:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 7
Answer and solution are completely different, they are not matching!The solution is correct, but their ans is wrong

Ans 10:

Shriya Prakash from NPS International, Singapore
Class : Class 6

Ans 11:

Pratheek from Null, Null
Class : Class 4
What is this? Answer and solution are completely different, they are not matching!

Ans 12:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 10

Ans 13:

lavanya from sacred heart convent school, raikot road Barnala , Barnala
Class : Class 3

Ans 14:

arpan bar from Future Bhubaneswar School, BHUBANESWAR
Class : Class 7

Ans 15:

shrenik from anand niketan, Ahmedabad
Class : Class 9

Ans 16:

Sargah Surya from bgsnps, Bengaluru
Class : Class 4

Ans 17:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
NA

Ans 18:

Kaustav Bhowal from Julien Day School, Kolkata
Class : Class 10
clear objection

Ans 19:

Shriya Prakash from NPS International, Singapore
Class : Class 6
Although the explanation is correct, it does not match the answer

Ans 20:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8
The ans is not matching!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 21:

shrenik from anand niketan, Ahmedabad
Class : Class 9
yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 22:

Shubhangi Pathak from Lilavatibai Podar High School, Mumbai
Class : Class 8
Pls rectify.

Ans 23:

Vikram from AVM, Mumbai
Class : Class 5

Ans 24:

PENTAPATI SAI RISHIKA from Prachin Global School, HYDERABAD
Class : Class 6
yes , its option C

Ans 25:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
The answer does not match with the solution. There should be a change in the answer.

Ans 26:

Arnav Raj Sharma from Dpsvk, Gurgaon
Class : Class 9
please explain. your solution doesn't match the correct answer provided by you.

Ans 27:

Aarav Gupta from Cambridge International School, Jalandhar
Class : Class 6
The option selected here is wrong.

Post Your Answer

EKLAVYA GONDULE from DPS BHILAI, Bhilai
Subject :NSO    Class : Class 6

Ans 1:

Anoop Haridas from dpsmis doha, doha
Class : Class 8
I think this answer is wrong. It should be 0.2 seconds, according to the definition of a Time Period in oscillatory motion.

Ans 2:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
According to definition - answer would be 0.2 s

Ans 3:

Aritra Porey from DPS Bangalore North, Bengaluru
Class : Class 10
According to definition - answer would be 0.2 s

Ans 4:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Class : Class 10
answer is wrong it should be 0.2 s

Ans 5:

PRISHA WAGH from G D SOMANI MEMORIAL SCHOOL, MUMBAI
Class : Class 7
wrong answer. should be 0.2s

Ans 6:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 7:

Aarav Malviya from INDIAN SCHOOL SALALAH, SALALAH
Class : Class 7
The time taken to complete one oscillation - a left swing and a right swing - is called the time period (T); it is measured in seconds.A swing takes 5 seconds to complete 25 oscillations. That means it would take 1 second to complete 25 ÷ 5 = 5 oscillations. That also means it would take 1 ÷ 5 = 0.2 seconds to complete 1 oscillation.So, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 8:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8

Ans 9:

shashwat from vidyashram, jaipur
Class : Class 8
please explain the answer

Ans 10:

Kaustav Bhowal from Julien Day School, Kolkata
Class : Class 10
the answer is wrong , it should be 0.2s. please kindly provide the solution to this question.

Ans 11:

Ritvik Nainawatee from Freedom International School, BANGALORE
Class : Class 6
The answer has to be 0.2 seconds(5/25). Pls correct

Ans 12:

kiyoshi from st xavier high school, Jaipur
Class : Class 6
The answer should be 0.2 s

Ans 13:

Kaushik Bhattacharya from LVIS, NOIDA
Class : Class 7
The answer seems to be wrong. 5 seconds to complete 25 oscillations. That means for one oscillation it is 5/25 = 0.2 seconds. 'Period' usually means one complete oscillation that is 0.2 seconds and that is not given.

Ans 14:

Angela M Dodmani from The jain International school, HUbli
Class : Class 7
The answer is wrong. It is 0.2

Ans 15:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 7
The swing completes 25 oscillations in 5 seconds So, It will complete 1 oscillation in 5/25 seconds = 0.2 secondsSo, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 16:

shrawan azad from DPS VASANTKUNJ NEW DELHI, New Delhi
Class : Class 4
Answer is wrong

Ans 17:

Lakshya Gupta from Manthan, Hyderabad
Class : Class 6

Ans 18:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 9
the answer is wrong

Ans 19:

SOURADEEP SHARMILA MANDAL from KENDRIYA VIDYALAYA IISC, Bengaluru
Class : Class 7
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Post Your Answer

ansh rai from delhi public school, Bhilai
Subject :NSO    Class : Class 5

Post Your Answer

Anshuman D from MVM, Hyderabad
Subject :NSO    Class : Class 7

Ans 1:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option a

Ans 2:

Tanushree from Asian International School, Colombo
Class : Class 7

Ans 3:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Ans 4:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
option b is the correct answer

Ans 5:

Krishna Srivastava from manipal public school, lucknow
Class : Class 7
Option B

Ans 6:

Shiven from Udgam, Ahmedabad
Class : Class 9

Ans 7:

Rithvik from BVM Global, Chennai
Class : Class 9
i checked in google. ans is a

Post Your Answer

Ajoy Bhuyan from DELHI PUBLIC SCHOOL, Bongaigaon
Subject :NSO    Class : Class 4

Post Your Answer

Agastya Tripathi from dps gurgaon, Gurgaon
Subject :NSO    Class : Class 5

Ans 1:

vayurve gowda from narayana group of schools, chennai
Class : Class 6
but how?

Ans 2:

Shaurya Gote from KV BSF Dantiwada, S K Nagar
Class : Class 5
THE MOON IS NOT STRAIGHT TO THE EARTH. MOON HAS SLIGHT SLANTING REVOLUTION. THAT IS WHY WE HAVE DIFFERENT PHASES OF THE MOON. IF THE MOON IS AT THE POSITION OF..... SUN---EARTH---MOON.......SO THAT WILL BE FULL MOON. FULL MOON IS GIVENN AT OPTION B. SO MOST OF US LIKE ME DID B BUT IT IS SHOWING C AS THE CORRECT ANSWER. BUT AS I THINK THAT EVERYTHING HAS A REASON.1. THE SOLUTION IS THE MEANINGFUL WAY IT IS GOOD. BUT IF YOU OPPOSE THIS, SO 2. THAT THE CHART IS SHOWING THAT....... SUN-----EARTH-----MOON. SO ACCORDING TO THE CHART, IT IS A LUNAR ECLIPSE IN WHICH THE MOON IS COMPLETLY BLACK. SO OPTION C HAS A REASON. SHARE YOUR IDEAS ALSO.

Ans 3:

Debashree Samanta from DPS BANGALORE , bangalore
Class : Class 7
if the answer is c, then they would have mentioned that it is a lunar eclipse. so it should be b

Ans 4:

from kalyan, Kalyan
Class : Class 6
Moon will get no sunlight.THIS ISN’T POSSIBLE!!!!!

Ans 5:

Devaansh Peddu from LHGS, RAJAHMUNDRY
Class : Class 5
The answer is b not c

Ans 6:

samanvay sinha from School of India, Bangalore, bengaluru
Class : Class 7
It is a full moon and I had enough of your mistakes SOF now, I am going to beat you people.

Ans 7:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5

Ans 8:

Navya GUPTA from dps noida, Noida
Class : Class 3
C

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
How come it is C ? This is insane!!!

Ans 10:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6
how is this possible

Ans 11:

Aditya from Sishugriha, Bangalore
Class : Class 4
only c

Ans 12:

nandini badola from christ school, dehradoon
Class : Class 6
moon does not have its own light it reflects of sun and as it is completely blocked by earth the suns light does not reflect and we do not see any phase of the moon .hence ans is c

Ans 13:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
This is wrong i thinkThe answer should be C

Ans 14:

SAARTH KARKERA from JBCN International School, Parel, Mumbai
Class : Class 5
This is absolutely incorrect. SOF should verify such answers. The question is about the phase of the moon. Even if it is a lunar eclipse it falls on a full moon day. The answer is B

Ans 15:

rajanya mandal from j h ambani, surat
Class : Class 4

Ans 16:

Pratham Dave from GNS, Bangalore
Class : Class 7
It is showing C as the answer to this question

Ans 17:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
b) IT SHD BE FULLLLLLLLLLLLLL MOOOOOOOOOOOOOON!?!??!

Ans 18:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5

Ans 19:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8

Ans 20:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8

Ans 21:

Anvi Ranade from ,
Class : Class 1
I think that c is correct as the moon is behind the earth , so there will be no light reaching the moon . Thus, it will be new moon .

Ans 22:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8
It will cause full moon ???

Ans 23:

Atul Sanjeev from Indian School Al Ghubra, Muscat
Class : Class 9
c

Ans 24:

Ayushman narayan from Dps ecity, Bangalore
Class : Class 5
According to any phases of the moon diagram, a full moon will be behind the Earth. Even lunar eclipse will be on a full moon day . New moons position will be the opposite of a full moon,i.e. between the earth and sun

Ans 25:

Advay from vibgyor high, pune
Class : Class 6
Yes!I checked it on Google!IT IS FULL MOON!!!!!!????

Ans 26:

Mayank Singla from lfc, Sangrur
Class : Class 7

Ans 27:

Ayushmaan from D, B
Class : Class 5
Full moon occurs when light is spread all over the surface of the moon...but in the picture the moon is blocked by earth and the moon will remain dark.Hence,the answer is (c) new moon

Ans 28:

Shaurya Gote from KV BSF Dantiwada, S K Nagar
Class : Class 5
IT SHOULD NOT BE C! B IS THE RIGHT ANSWER. IF SUN EARTH MOON= FULL MOON. IF SUN MOON EARTH = NEW MOON. .

Ans 29:

ram from vibgyor, pune
Class : Class 5
it is b

Ans 30:

Divit Srivastava from NPS , Bangalore
Class : Class 4
b is answer

Post Your Answer