National Science Olympiad Forum By SOF Olympiad Trainer - Page 488
  1. Home
  2. /  Forum

User Forum

Ask Your Question
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:

Sargah Surya from bgsnps, Bengaluru
Class : Class 4

Ans 2:

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

Ans 3:

Ayan Gupta from sdf public school, GAUTAM BUDDHA NAGAR
Class : Class 6
The correct is NSN

Ans 4:

Vikram from AVM, Mumbai
Class : Class 5

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

shrenik from anand niketan, Ahmedabad
Class : Class 9

Ans 11:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
please explain. your solution doesn't match the correct answer provided by you.

Ans 12:

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

Ans 13:

Rachna Jo from HIS, BLR
Class : Class 6
correct option is C, not B. Please make correction.

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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 18:

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 19:

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 20:

Shriya Prakash from NPS International, Singapore
Class : Class 6

Ans 21:

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

Ans 22:

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 23:

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

Ans 24:

Aarav Gupta from Cambridge International School, Jalandhar
Class : Class 5
The option selected here is wrong.

Ans 25:

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

Ans 26:

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

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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 5:

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

Ans 6:

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

Ans 7:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 8:

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

Ans 9:

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

Ans 10:

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 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

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 15:

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 16:

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

Ans 17:

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

Ans 18:

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 19:

Lakshya Gupta from Manthan, Hyderabad
Class : Class 6

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:

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

Ans 2:

Shiven from Udgam, Ahmedabad
Class : Class 9

Ans 3:

Tanushree from Asian International School, Colombo
Class : Class 7

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

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:

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 2:

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

Ans 3:

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

Ans 4:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8

Ans 5:

Mayank Singla from lfc, Sangrur
Class : Class 7

Ans 6:

Aditya from Sishugriha, Bangalore
Class : Class 4
only c

Ans 7:

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

Ans 8:

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 9:

UMANG from SPRING DALE COLLAGE, Lucknow
Class : Class 8

Ans 10:

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 11:

samanvay sinha from School of India, Bangalore, bengaluru
Class : Class 5
It is a full moon and I had enough of your mistakes SOF now, I am going to beat you people.

Ans 12:

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

Ans 13:

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 14:

Debashree Samanta from DPS BANGALORE , bangalore
Class : Class 6
if the answer is c, then they would have mentioned that it is a lunar eclipse. so it should be b

Ans 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Ans 19:

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 20:

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

Ans 21:

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

Ans 22:

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

Ans 23:

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

Ans 24:

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

Ans 25:

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

Ans 26:

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

Ans 27:

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 28:

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

Ans 29:

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

Ans 30:

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

Post Your Answer

Rishika Mukherjee from AG Church, Purulia
Subject :NSO    Class : Class 8

Ans 1:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
I agree, I feel they are different

Ans 2:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
doubtthey aren't at the same depthlook carefully sof

Ans 3:

Tejas Agarwal from Prudence School , New Delhi
Class : Class 10
yes they aren't at same depth

Ans 4:

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Class : Class 8

Ans 5:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
The three dots are not at the same depth. P and Q are at the same depth, but R is slightly above both of them.

Ans 6:

arnav raj sharma from gulibulium school, new york
Class : Class 8
r is slightly above them so it has less pressure and there is a block above p so the answer is (C)

Ans 7:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
R is at a slightly higher depth

Post Your Answer

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, BAKHRAHAT
Subject :NSO    Class : Class 3

Ans 1:

SIDDHARTH SOMANI from Vibgyor High, Mumbai
Class : Class 5

Ans 2:

Dhruv Sachdev from Bhavan Vidyalaya, chandigarh
Class : Class 8
THE ANSWER IS B

Post Your Answer

Ashwak from Cambridge, Jalandhar
Subject :NSO    Class : Class 5

Ans 1:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Tides are caused by the gravitational pull of the moon

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 7
C

Ans 3:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
My answer is C. I have written it wrong as A

Ans 4:

Sahid from New Era public school, Delhi
Class : Class 5
C

Ans 5:

DHERA from SBC ACADEMY , Dindigul
Class : Class 7
The answer is C

Ans 6:

Anirva Dhote from R J Chaware Convent, KARANJA
Class : Class 7
an

Ans 7:

Vaanya Sharma from St Margate, Rohini
Class : Class 8
correct answer is c graavitional pull by earth

Ans 8:

Upamanyu Mukherjee from Indus Valley World School, Kolkata
Class : Class 7

Ans 9:

Arnav Nandan from ST PETERS COLLEGE AGRA, Agra
Class : Class 9
C for cat

Ans 10:

Ruhaan Singh from Gopalan International School, Bangalore
Class : Class 7

Ans 11:

Pratiksha Panda from Sri Kumaran's School, Bangalore
Class : Class 5
the tide happens due to moon's gravity

Ans 12:

Shraddha S Nair from Bright CBSE, Day school vasna, Vadodara
Class : Class 7
The answer is C because tides are caused due to Gravitational pull of moon

Ans 13:

Tanishka Laha from Euroschool, Bengaluru
Class : Class 5
Gravitational pull of the moon is the correct answer.

Ans 14:

RAMAYANI PAKHARE from S M SHETTY HIGH SCHOOL, MUMBAI
Class : Class 6
C

Ans 15:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7
C

Ans 16:

Anirva Dhote from R J Chaware Convent, KARANJA
Class : Class 7
c

Post Your Answer