National Science Olympiad Forum By SOF Olympiad Trainer - Page 773
  1. Home
  2. /  Forum

User Forum

Ask Your Question
from ,
Subject :NSO    Class : Class 5

Ans 1:

from ,
Class :

Ans 2:

from ,
Class :
how

Ans 3:

Kaustubhi Reddy from Meridian hyderabad, Hyderabad
Class : Class 4
How is the answer coming

Post Your Answer

from ,
Subject :NSO    Class : Class 2

Ans 1:

Diksha Pattnaik from Vibgyor High, Bangalore
Class : Class 7
no, its b

Ans 2:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7
The correct answer will be C

Post Your Answer

from ,
Subject :NSO    Class : Class 6

Ans 1:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4

Ans 2:

AJAY LAHOTI from SPRINGDALES DUBAI, Dubai
Class : Class 6
Yes the answer is supposed to be a

Ans 3:

Anmol kathar from deogiri global academy, aurangabad
Class : Class 10
if we are facing towards north and we have to go to east we must turn towards right and then go to straight.It means that answer they have given us in wrong.

Ans 4:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
B

Ans 5:

Aadhira from velammal new gen school, Medavakkam, Chennai
Class : Class 6
B is the correct answer.

Ans 6:

Harsh Shukla from DPS Bangalore East, Bengaluru
Class : Class 9

Ans 7:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9
it's b as when she will turn around she will be facing north and her right is east and when she'll turn the east side is on her left

Ans 8:

NEHA JOON from dps rohini , New delhi
Class : Class 8
confusing question

Ans 9:

from ,
Class :
The red portion on the compass always signifies the north direction. So the answer given is wrong.

Ans 10:

from ,
Class :
I think the answer provided is right, since the compass(Red Pointer) is pointing towards her i.e, in the north direction, so she is facing south. Hence for her east will be towards left and then go straight.

Ans 11:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
S0

Ans 12:

DEBAPARNA KAR from WWA COSSIPORE ENGLISH SCHOOL, KOLKATA
Class : Class 9

Ans 13:

Shaurya from Mris 51 Gurugram, Gurugram
Class : Class 7
EASY MAN ANSWER IS B BECAUSE SHE'S FACING SOUTH AND TO GO EAST YOU TAKE LEFT (IF YOU ARE FACING SOUTH)

Ans 14:

Tamoghna Ghosh from bal bharati public school, Jhajjar
Class : Class 6
@Arunav, please don't say these bad comments... It hurts people who have given the wrong answer.

Ans 15:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
Yes the red pointer shows north so she has to go towards east and east is towards right of north answer is wrong the answer should be A

Ans 16:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
Answer

Ans 17:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
kpks, apply mind . it is said that red portion(NORTH) points towards her, which means that she is seeing SOUTH with her eyes. Now , to go eat, if she was seeing north only , she would have to turned right. But as she in facing south, she will have to turn opposite of right i.e - leftso those who are saying ans is a , are mad!!!!!!!

Ans 18:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Confusing question, confusing answers discussed. HEY MASTER ANSWER PLZ HELP US OUT!

Ans 19:

Devasree from Presidium, Ghaziabad
Class : Class 10
Yes I think it is a as well

Ans 20:

Priyam Bhattacharya from cambridge court high school, jaipur
Class : Class 6
you are wrong ans is bbbbbbbbbbbbbbbbbbbbbbb

Post Your Answer

from ,
Subject :NSO    Class : Class 6

Ans 1:

rocker harshil from TImpany senior secondary school, Visakhapatnam
Class : Class 6
as the magnetic field near the ends/poles is strong ,the number of iron nails attracted will be more near the poles and less near the centre

Ans 2:

Ishita Mehra from Trinity Convent, Vidisha
Class : Class 9
a is correct answer

Ans 3:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
a is correct one

Ans 4:

Riddhima Das from GIIS, Singapore
Class : Class 8

Post Your Answer

from ,
Subject :NSO    Class : Class 5

Ans 1:

Irresh Vijay from NPSI Singapore, Singapore
Class : Class 8
The letters are rearranged in descending order PENCIL -> PNLIEC ANGLE -> NLGEA

Ans 2:

from ,
Class :
Please explain

Post Your Answer

from ,
Subject :NSO    Class : Class 1

Ans 1:

Akshaj from SPM English school, Pune
Class : Class 1

Ans 2:

from ,
Class :
8

Ans 3:

anu from Haralur, Bengaluru
Class : Class 5
a

Ans 4:

from ,
Class :
ans is 8

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
they are mads

Ans 2:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 10

Ans 3:

Rimi from TLISK, pune
Class : Class 9
All of you are correct in one sense but in other sense if we look i think all of these is the answer

Ans 4:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5
Class :Easy

Ans 5:

Hiyansh Jain from Podar International School, Mumbai
Class : Class 7
Only melting of ice cube can be again turned to it's original form

Ans 6:

r sub from Da, Mumbai
Class : Class 7

Ans 7:

Anushka kumar from DPS paradip, odisa
Class : Class 9
melting of ice is a physical change but why not others? they are to!

Ans 8:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
melting of ice

Ans 9:

Vaikhari Sonawane from symbiosis school, Nashik
Class : Class 10
Melting of ice

Ans 10:

from ,
Class :
MELTING OF ICE IS THE ONLY PHYSICAL CHANGE IN THE GIVEN OPTIONS. OTERS ARE CHEMICAL CHANGE.

Ans 11:

Durva Shah from SSRVM, Ahmedabad
Class : Class 6
Melting of ice

Ans 12:

princy gigo from Global Indian International School, Kuala Lumpur
Class : Class 8
Answer D : All of these

Ans 13:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
ans 6 is use less

Ans 14:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
melting of ice

Ans 15:

Pragya Mahajan from BCM Arya Model Sr Sec School, Ludhiana
Class : Class 8

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Hitarthi Shah from Ahmedabad International School, Ahmedabad
Class : Class 7

Ans 2:

XXX from SVM, Bangalore
Class : Class 5
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Ans 3:

Tanishka Laha from Euroschool, Bengaluru
Class : Class 5
The volume of the JAR is 400 cm3 . If we insert air in the jar, the VOLUME OF THE JAR will remain the same as it is mentioned that the JAR IS COMPLETELY MADE OF GLASS, which is not flexible. Therefore, the answer is C .......

Ans 4:

Hari Govind from Delhi Public School Chandigarh , Chandigarh
Class : Class 6
the answer is d

Ans 5:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
ans is D

Ans 6:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
air can be compressed .

Ans 7:

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

Ans 8:

Dhruv from Springdales, Dubai
Class : Class 9
It will be D as it says that the jar contains 400 cm3 air and if a 50 cm3 syring filled with air is put into the jar it will become 450 cm3 400 50 = 450 cm3.

Ans 9:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
Ok c is answer.

Ans 10:

from ,
Class :
d won't be the correct answer. the answer is c as air can be compressed.

Ans 11:

Advait kaushik from Ryan international school, Gurugram
Class : Class 8
It was forced out of the tank so it went out and the thing is 50cm³ so 400-50 50=400So the answer is 400cm³

Ans 12:

Shaina Mukherjee from DPS Sharjah, Dubai
Class : Class 5
D

Ans 13:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Ans 16 is wrong

Ans 14:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6
As air can be compressed and takes up the volume of container, its final volume in the jar will be 400 cm3.

Ans 15:

Tanmay kaushal from ICSE, Mumbai
Class : Class 5
Class : easy

Ans 16:

Gauransh Singla from DPS , Navi Mumbai
Class : Class 5
the correct answer is c because the volume of the jar is 400cm3

Ans 17:

Saipriya from Sankara, Chennai
Class : Class 9
yes all please understand sorry if i am wrong it compress the air dear children it wont increase t decreases

Ans 18:

Advaitt S Koduri from Presidium Noida 31, NOIDA
Class : Class 6

Ans 19:

from ,
Class :
Sof pls give us a GOOD explanation. Ans is d.

Ans 20:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
the question says what is the total volume of AIR in the jar, so as air can be compressed then it should obviously contain 450cm3 and I never heard of glass being flexible in other words the 50cm3 of air in the jar is not going to disappear or fly away so ans is D

Ans 21:

Mystic Girl from NPS, Bnagalore
Class : Class 6
C

Ans 22:

Amey Goyal from Delhi Public School, PANCHKULA
Class : Class 7
hello

Ans 23:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Correct answer is C because air can be compressed. You don't need to add 400 and 50 because air can be compressed

Ans 24:

Prajjwal Dey from MLZS Wakad, PUNE
Class : Class 6

Ans 25:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
Ans is c

Ans 26:

from ,
Class :
I thought it would be C but after profound thinking I realised that the answer would be D

Ans 27:

from ,
Class :
D

Ans 28:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
air can be compressed and it would be 450 cm3 answer is d

Ans 29:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru
Class : Class 8
you all are coreect

Ans 30:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
D

Ans 31:

Tapan from San Academy, Chennai
Class : Class 8

Ans 32:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
plz dont be angry. The volume of the glass jar will not change. it will remain the same as it is not flexible. so if we compress air of 50cm3 the volume will decrease. But air occupies the available space. So, the correct answer is C.

Ans 33:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

SHUBHANI LAKHERA from ANN MARY SCHOOL, Dehradun
Class : Class 5
Both B and C are right so please don’t quarrel

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
x is put in a vase of 30 ml water . then it becomes 50 ml . so , volume of x is 50 - 30 i.e. 20 ml . then after adding y , it becomes 75 ml . then , y is 75 - 50 i.e. 25 ml . both are less than 30 ml . so , the correct answer is C . understood ?

Ans 3:

from ,
Class :
I q

Ans 4:

Yajat Manoj from Vibgyor, Bengaluru
Class : Class 5
ANSWER is c as many people don't see that the container already had 30 ml of water

Ans 5:

Akshaj V from PSBB Senior Secondary School, Chennai
Class : Class 7
When you put R on the surface you will find that it does not weigh more than 30 units.

Ans 6:

shreyash rawat from podar international school, pune
Class : Class 8
option c is wrong only y has 25ml volume and x has 50ml , z also has 50 ml of volume so , option b is correct

Ans 7:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
Yajat is correct because if you read the question carefully , it is written '30 ml of watter' which means that it was already filled with 30 ml of water. now x=50-30=20cm3 and y =75 - 50 = 25 mlSo correct option is c.

Ans 8:

Bhavya Jain from K.R Manglam World School, Ghaziabad
Class : Class 8
B is 25ml which is less than 30 ml ... B is the answer

Ans 9: (Master Answer)

from ,
Class :

Ans 10:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
x=20 and y= 25 read the last line of the question and you will find out

Ans 11:

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

Ans 12:

AARNA Kapse from The swaminarayan school, Nagpur
Class : Class 7
B is the correct answer.

Ans 13:

sauradeep from j v m Shyamali , ranchi
Class : Class 10
DEFINITELY IT IS B

Ans 14:

Saipriya from Sankara, Chennai
Class : Class 9
yes dear B and C are correct SOF is wrong my dear kids please dont fight

Ans 15:

krishneil from Elpro international school, Pune
Class : Class 6
When Y is put it looks like it rose from 50 to 70.

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Rimi from TLISK, pune
Class : Class 9
I like this question

Ans 2:

Adwik Bairagi from DPS Newtown, KOLKATA
Class : Class 5
Well, The question is tricky and it needs critical thinking. I thought B but it was D........surprising!

Post Your Answer