National Science Olympiad Forum By SOF Olympiad Trainer - Page 700
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Rama Panda from tathva, tokyo
Subject :NSO    Class : Class 3

Ans 1:

rahul from euroschool, Mumbai
Class : Class 8
tttttttttttttttttttttttttt5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt555555555555555555555555555555555555555ttttttttttttttttttttttttttttttttttttttttttttttttttttttttt555555555555555555555555555555555555555

Ans 2:

Kanishk bhati from G D goenka school gzb, ghaziabad
Class : Class 3
i think it is SOLID

Ans 3:

Karthik from TMS, Dubai
Class : Class 3
The correct answer is D

Ans 4:

smithy from ybis, singapore
Class : Class 3
the correct ansswer is vacum

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

Ans 6:

SHAUNAK from St Xaviers School, HAZARIBAG
Class : Class 3
D [vacuum] is the correct answer.

Ans 7:

akshitha from Euroschool, Bengaluru
Class : Class 3
vacuum is not the correct answer the correct answer is solid

Ans 8:

Angeline from Dmis, Doha
Class : Class 3
Yes, The correct is vacum

Ans 9:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
We cannot hear through vacuum.

Ans 10:

Ivan Tyagi from Chirec International School , Hyderabad
Class : Class 8
wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww

Post Your Answer

Metla Sai Siri from NHVPS, Bangalore
Subject :NSO    Class : Class 2

Ans 1:

Devansh Agrawal from GEMS Modern Academy, Dubai
Class : Class 4
class:

Ans 2:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8

Ans 3:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7

Ans 4:

Ishayu Poddar from NPS Whitefield, Bangalore
Class : Class 8
It should be Noon since there is no shadow

Ans 5:

Sreyas from Don Bosco, Park Circus, Kolkata
Class : Class 5
bad

Ans 6:

Niranjhan Rajeshkumar from Deens Academy, Whitefield, Bengaluru
Class : Class 8
Can you please help me understand this question before this Tuesday.

Ans 7:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7
It is morning.

Post Your Answer

Kushagra Shukla from Presidium dwarka, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

RIDDHIMA KHERA from APEEJAY SCHOOL NOIDA, NOIDA
Class : Class 5
how

Ans 2:

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

Ans 3:

Haroon T K from Silver Hills public school , Calicut
Class : Class 5

Post Your Answer

shweta kulkarni from Greenwood High Bannerghatta, Bangalore
Subject :NSO    Class : Class 2

Ans 1:

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

Ans 2:

Diksha Pattnaik from Vibgyor High, Bangalore
Class : Class 6
no, its b

Post Your Answer

Himani Patil from Merry Immaculate, Borivali
Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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 7:

kpks14 from RIMT World School, Chandigarh
Class : Class 7
The red portion on the compass always signifies the north direction. So the answer given is wrong.

Ans 8:

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

Ans 9:

ADRIJA BANERJEE from KANAURIA GANGABAUX BHARTIYA VIDYA BHAVAN, KOLKATA
Class : Class 6
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 10:

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

Ans 11:

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 12:

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 13:

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

Ans 14:

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 15:

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

Ans 16:

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

Ans 17:

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

Ans 18:

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

Ans 19:

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 20:

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!!!!!!!

Post Your Answer

Himani Patil from Merry Immaculate, Borivali
Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

Riddhima Das from GIIS, Singapore
Class : Class 8

Post Your Answer

Kushagra Shukla from Presidium dwarka, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Aarohi Tiwari from St Mary ICSE School, NAVI MUMBAI
Class : Class 6
Please explain

Ans 2:

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

Post Your Answer

FALAAH.QIDWAI from DPSN, NOIDA
Subject :NSO    Class : Class 1

Ans 1:

Bhagya Kulkarni from Birla School Kalyan, Kalyan
Class : Class 5
8

Ans 2:

Thomas K John from iss, Sohar
Class : Class 2
ans is 8

Ans 3:

Akshaj from SPM English school, Pune
Class : Class 1

Ans 4:

anu from Haralur, Bengaluru
Class : Class 5
a

Post Your Answer

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

Ans 1:

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 2:

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 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

r sub from Da, Mumbai
Class : Class 7

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 8

Ans 15:

Aishee Sarkar from St. Stephens School , Kolkata , West Bengal, Kolkata
Class : Class 4
MELTING OF ICE IS THE ONLY PHYSICAL CHANGE IN THE GIVEN OPTIONS. OTERS ARE CHEMICAL CHANGE.

Post Your Answer

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

Ans 1:

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

Ans 2:

Nilarka Pahari from Young Horizons School, Kolkata
Class : Class 4
d won't be the correct answer. the answer is c as air can be compressed.

Ans 3:

Tapan from San Academy, Chennai
Class : Class 8

Ans 4:

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

Ans 5:

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

Ans 6:

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 7:

XXX from SVM, Bangalore
Class : Class 5
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Ans 8:

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

Ans 9:

Prajjwal Dey from MLZS Wakad, PUNE
Class : Class 6

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

Saipriya from Sankara, Chennai
Class : Class 8
yes all please understand sorry if i am wrong it compress the air dear children it wont increase t decreases

Ans 14:

Mystic Girl from NPS, Bnagalore
Class : Class 6
C

Ans 15:

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 16:

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 17:

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 18:

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

Ans 19:

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

Ans 20:

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

Ans 21:

Dibyajyoti Das from DAV PUBLIC SCHOOL, Bhubaneswar
Class : Class 5
D

Ans 22:

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 23:

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

Ans 24:

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

Ans 25:

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 26:

Keshav Taneja from Wisdom world school, Kurukshetra
Class : Class 5
I thought it would be C but after profound thinking I realised that the answer would be D

Ans 27:

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

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:

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

Ans 30:

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

Ans 31:

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 32:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
Sof pls give us a GOOD explanation. Ans is d.

Ans 33:

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

Post Your Answer