National Science Olympiad Forum By SOF Olympiad Trainer - Page 736
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Ayush Kumar from Maria Assupta Sr. Sec. Convent School, KASHIPUR
Subject :NSO    Class : Class 5

Ans 1:

Rishika Budhiraja from TSMS Noida, Noida
Class : Class 4
so difficult

Ans 2:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
a

Ans 3:

Archit srivastava from Rbk school, Mumbai
Class : Class 4

Ans 4:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5

Ans 5:

D Murari from Indian School of Excellence, Bangalore
Class : Class 9

Ans 6:

Kyraa Singh from dpsnoida, Noida
Class : Class 5
All apart from c are correct

Ans 7:

Rishika Budhiraja from TSMS Noida, Noida
Class : Class 4

Ans 8:

VAIBHAVH RAMESH from NARAYANA ETECHNO WHITEFIELD, BANGALORE
Class : Class 5

Ans 9:

Vedanth S from Kumarans Childrens Academy, Bangalore
Class : Class 6
correct answer:D

Ans 10:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 11:

Sunita from Dps, Greater Noida
Class : Class 9
haha

Ans 12:

Krithi Manasvini from Alwin Memorial Public School, Chennai
Class : Class 7
As there are 2 magnets and 2 non magnet rings, only one space can be obtained between the 2 magnets with similar poles repelling each other. Option A shows two spaces between rings. This configuration is not possible.

Ans 13:

MANAS.KUMAR from Dehli Public School Noida, NOIDA
Class : Class 5
can anyone tell me

Ans 14:

Anant Saxena from Delhi public school Gandhinagar , Gandhinagar
Class : Class 9
the simplest solution is there there are two magnets so only 1 or 0 gaps should be there... in a: there are two gaps so a is the answer .. on the other hand look at the textures

Ans 15:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
How

Ans 16:

Adyanshu Panigrahi from Montfort School, Dhenkanal
Class : Class 6

Ans 17:

Avighna Shastri from doha modern indian school, doha
Class : Class 2

Ans 18:

Vivaan Patra from PODAR INTERNATIONAL SCHOOL, mumbai
Class : Class 1

Ans 19:

Vihaan from K R Mangalam World School Vaishali, Ghaziabad
Class : Class 9
hjkhkrywiury4uyiyyrryeurdfieuuiufiuiukhjhwaste hamnmhj mangfeme nt lieowuioelbiruuwilruy3r73673 b7647li 764u3ilq 8oo47b ,l3iy4rbc iluryb ejkty4uqib4ucyri4k7r q4ktry srbuyeurv cyuikray4rv, kvyrbv4 yr34uq6 ivee4uiyrbueywruy4uyiuyyuyuiyiuy

Ans 20:

Nayanika Sadhish from CL Metha Sishya OMR, Chennai
Class : Class 9
I do not understand this qustion

Ans 21:

RC from Vibgyor, Navi Mumbai
Class : Class 6

Ans 22:

BHUVANESH2010 from MAYOOR PRIVATE SCHOOL, ABU DHABI
Class : Class 5

Ans 23:

Jeronee from Christwood School, PERUMBAKKAM
Class : Class 5
FUCKU

Ans 24:

Akshara from NPS, Bengaluru
Class : Class 8

Ans 25:

SANVI ROHILLA from The little shri, Rohtak
Class : Class 5

Ans 26:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
The correct answer is A. I wrote it wrong as D

Ans 27:

Sunita from Dps, Greater Noida
Class : Class 9
HOME Test ReviewForce Work and Energy0 : 5 : 9 / 0 : 40Time Taken20 / 20Marks ObtainedAll Correct Wrong Unattemted1.Your Answer B Correct Answer B View this question on ForumSolutionReport Error Marks: 12.Your Answer D Correct Answer D View this question on ForumReport Error Marks: 13.Your Answer C Correct Answer C View this question on ForumSolutionReport Error Marks: 14.Your Answer D Correct Answer D View this question on ForumSolutionReport Error Marks: 15.Your Answer B Correct Answer B View this question on ForumSolutionReport Error Marks: 16.Your Answer D Correct Answer D View this question on ForumSolutionReport Error Marks: 17.Your Answer C Correct Answer C View this question on ForumSolutionReport Error Marks: 18.Your Answer C Correct Answer C View this question on ForumReport Error Marks: 19.Your Answer B Correct Answer B View this question on ForumSolutionReport Error Marks: 110.Your Answer C Correct Answer C View this question on ForumSolutionReport Error Marks: 111.Your Answer B Correct Answer B View this question on ForumSolutionReport Error Marks: 112.Your Answer A Correct Answer A View this question on ForumSolutionReport Error Marks: 113.Your Answer A Correct Answer A View this question on ForumSolutionReport Error Marks: 114.Your Answer B Correct Answer B View this question on ForumReport Error Marks: 115.Your Answer A Correct Answer A View this question on ForumSolutionReport Error Marks: 116.Your Answer B Correct Answer B View this question on ForumSolutionReport Error Marks: 117.Your Answer D Correct Answer D View this question on ForumSolutionReport Error Marks: 118.Your Answer D Correct Answer D View this question on ForumReport Error Marks: 119.Your Answer A Correct Answer A View this question on ForumReport Error Marks: 120.Your Answer A Correct Answer A View this question on ForumSolutionReport Error Marks: 1

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arijit paul from New Town School, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Neevedita Singh from Auxilium Convent School Dum Dum, Kolkata
Class : Class 7
A

Ans 2:

Khwahish Sharma from Oakfield Public School , Jaipur
Class : Class 7
The answer should be C because during the last 10 seconds [ 40 second ] the distance is 10 meter not 5 meter.

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 3

Ans 1:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
what????

Ans 2:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7
Tailor Bird 's Nest Is Made Of 2 Leaves Not Like This One Gotcha!

Ans 3:

Sreenath from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 5
Tailor bird that is A

Ans 4:

Ashwak from Cambridge, Jalandhar
Class : Class 9
They are right it should be [B] .

Ans 5:

Diya Jasmina from Samsidh MLZS, Bengaluru
Class : Class 4
WHAT!!!!!! IT SHOULD BE (A).

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 9

Ans 7:

SS from meridian, hyderabad
Class : Class 5
yes the answer is tailor bird

Ans 8:

Aditi Mahanti from DPS North Kolkata, Kolkata
Class : Class 3
It should be a tailorbird

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Shreesh Panigrahi from St. Xavier's High School, Kedargouri Bhubaneswar
Subject :NSO    Class : Class 8

Ans 1:

Subash kandoth from New horizon public school , Navi Mumbai
Class : Class 10
TBH2VI http://www.LnAJ7K8QSpfMO2wQ8gO.com

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Ankit Nandy from Lawrence High School, Bangalore
Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Alpha, Beta, Gamma in ascending order.

Alpha particles leaves the nucleus of an unstable atom at a speed of 16,000 kilometres per second, around a tenth the speed of light.
Beta particles travel at a speed of 270,000 kilometres per second, around 98% of speed of light.
Gamma particles travel at the speed of light.

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Agnimitra Gupta from south point school, Kolkata
Subject :NSO    Class : Class 4

Ans 1:

Vidhya M from Vibgyor High Bannerghatta, Bangalore
Class : Class 7
When a substance is cooled the molecules come closer. But there is no picture showing that the molecules are coming closer there is no correct answer. Also option B and C are the same. Can you please change it?

Ans 2:

Arpit Pratap Singh from Delhi Public School Bangalore North , Bengaluru
Class : Class 7
you are right vaibhav all are wrong

Ans 3:

Prashanth from Gems Modern Academy, Dubai
Class : Class 5
THE ANSWER IS WRONG.

Ans 4:

Kaashvi Sharma from Bal Bharati Public School, GRHM, New Delhi
Class : Class 8
if an object is cooled down the molecule structure changes from loosely packed to tightly packed. therefore none of the options is correct

Ans 5:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4

Ans 6:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
I also think that.Questions ,options, colums and answers didn't mentioned.

Ans 7:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8
all options are wrong

Ans 8:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
b and c are all the same

Ans 9:

Deepayan Das from South Point High School, Kolkata
Class : Class 6
There is no specific details about which one is X or Y.So by common sense I think that it would be D.But B

Ans 10:

sundus from salwan public school, Gurgaon
Class : Class 4
All options are WRONG

Ans 11:

Chiranjib kar from MOUNT LITERA ZEE SCHOOL, JAJPUR
Class : Class 6
Options are wrong. Molecular distance should be less.

Ans 12:

Mahati p from cornerstone the public school, deepthi sreenagar colony hyderabad
Class : Class 6

Ans 13:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
ALL OPTIONS ARE WRONG

Ans 14:

Deepak Vijayaragavan from Greenwood High, Bengaluru
Class : Class 4
Please change it. It is correct in NSO book like Harish Divakar said

Ans 15:

Pratibha from Vaels billabong international, Chennai
Class : Class 5
Can somebody pls answer this question with explanation

Ans 16:

Shailaja Divakar from Chennai public school global school, London
Class : Class 6
All the answer is wrong. In the NSO book, it is right.

Ans 17:

Shailaja Divakar from Chennai public school global school, London
Class : Class 6

Ans 18:

monisha garg from carmel convent school sector 9 chandigarh, panchkula
Class : Class 4
all options are wrong

Ans 19:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
PLS. CORRECT

Ans 20:

Archit Borkar from SSVM World School, Coimbatore
Class : Class 9
wrong options

Ans 21:

Samika Ranjan from The Shri Ram School Aravali, Gurgaon
Class : Class 7
please change the question.

Ans 22:

Ridhan from SFS janakpuri, New Delhi
Class : Class 5
HARRY CAN YOU PLEASE EXPLAIN ME

Ans 23:

Vrishank Sai Anand from GEMS Modern Academy, Dubai
Class : Class 9
SOF IS MAD

Ans 24:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer is C

Ans 25:

Utkarsh Chakravarty from Pinnacle High International School, Mumbai
Class : Class 6
None of the options are correct according to my doubt.

Ans 26:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
question, answer and solution is wrongall the options are showing the difference on heating

Ans 27:

Ainesh das from Chrysalis, Bangalore
Class : Class 4
all are wrong

Ans 28:

Kanav Dhingra from DPS sec45, Gurgaon
Class : Class 10
ALL ARE WRONG

Ans 29:

IAMLOST from ABC, Pune
Class : Class 8

Ans 30:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
all Q are wrong

Ans 31:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
Please please please please please please please please change the question

Ans 32:

Isra Fathima from sophia high school, Bengaluru
Class : Class 7
The options given are wrong / confusing. Please clarify.

Ans 33:

Yaduveer Rathore from MSMS School, Jaipur
Class : Class 5
wrong wrong wrong wrong wrong wrong

Ans 34:

Bhavya Jain from K R Mangalam World Scholl, GHAZIABAD
Class : Class 4
how can liquid turn into gas by freezing ? Option A does the same thing so the correct option should be D

Ans 35:

Aparna praveen from Rajagiri, Ernakulam
Class : Class 4
is there a correction in the options given?if not please clarify with explanation

Ans 36:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 7
I think al options are wrong . Please tell the correct answer

Ans 37:

Ainesh das from Chrysalis, Bangalore
Class : Class 4
ansAll answers oposite

Ans 38:

Aarush Thakur from DPS, Gurgaon
Class : Class 6
option d maybe

Ans 39:

from ,
Class : Class 5
Options are wrong. Molecular distance should be less. first fix which column is X and Y.

Ans 40:

Sandipta Bhattacharjee from Sri Ram Narayan Singh Memorial High School, Kolkata
Class : Class 5
I have by mistake typed it Co sorry it will be C. I have a solution we can report error.

Ans 41:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
Qtn. agreed but main point is which is column X and which is column is Y??????

Ans 42:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The question , answer and the solution are all correct … Vrishank don't say that the SOF is mad ( I think you are mad ) you are a FOOL

Ans 43:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
I agree with Harry , 1 B AND C ARE NOT THE SAME. 2 When liquid is cooled down it forms solid, SO THE ONLY ANSWER IS CCCC

Ans 44:

Angshu from Dehli Public School Bangalore East, Bangalore
Class : Class 9
it is wrong

Ans 45:

ArhamAnay Jain 4G from MDPS, Faridabad
Class : Class 4
all options are wrong

Ans 46:

Prashanth from Gems Modern Academy, Dubai
Class : Class 5
SHOULD HAVE BEEN SPECIFIC WITH RESPECT TO X AND Y MARKING

Ans 47:

BISWADITYA TRIPATHY from Delhi public school Bangalore east, Bangalore
Class : Class 4
Please explain the answer. I also support Baibhab that the choices given are wrong.

Ans 48:

Sandipta Bhattacharjee from Sri Ram Narayan Singh Memorial High School, Kolkata
Class : Class 5
B and Co are same. Intermolecular space is not decreasing in any of the situations. It is wrong.

Ans 49:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7

Ans 50:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9
the options are wrong

Ans 51:

shreyash rawat from podar international school, pune
Class : Class 8
4wrong question

Ans 52:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
The question is wrong... and so the answer is also misleading.

Ans 53:

Tulaa Auti from Vidya valley school, pune
Class : Class 4
All are wrong. At least number of atoms should be same. So answer should be D

Ans 54:

Inakshi Dev from Hemsheela, Kolkatta, Kolkatta
Class : Class 4
Are B, C, D correct.

Ans 55:

Saumya Asmriti from CITY MONTESSORY SCHOOL INTER COLLEGE LUCKNOW UTTAR PRADESH, Lucknow
Class : Class 4
All options are wrong.

Ans 56:

Mahati p from cornerstone the public school, deepthi sreenagar colony hyderabad
Class : Class 6
All the options are totally wrong, please change them

Ans 57:

VAIBHAV RAI from Cambridge Court High School, JAIPUR
Class : Class 8
I think all options are wrong

Ans 58:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
Option b, c are the same. Pls give me a proper explanation as to why one option is correct

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Agnimitra Gupta from south point school, Kolkata
Subject :NSO    Class : Class 4

Ans 1:

Shreeraj from ISWK, Muscat, Muscat
Class : Class 4
Very Very Good

Ans 2:

Rajveer Santosh Mulik from Rims International School, Pune
Class : Class 4
YES , C IS CORRECT @RAJVEER

Ans 3:

Shrihan Koley from Radiant International School , Patna
Class : Class 5
Hoooooooooooooooooooooooooooooossssssssssssssssssssssssssssssssssssssssssssssssssss

Ans 4:

Saani from Cambridge School, Mangalore
Class : Class 9
A is correct

Ans 5:

Gurnoor from Chitkara International School, Chandigarh
Class : Class 5
c

Ans 6:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
c

Ans 7:

SIDDHARTH SOMANI from Vibgyor High, Mumbai
Class : Class 5
C is the correct answerEveryone

Ans 8:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5

Ans 9:

Soorya Tej R from Delhi Public School, Hyderabad
Class : Class 6
a

Ans 10:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7
C

Ans 11:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC is correct

Ans 12:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is C .

Ans 13:

Diyaa Wahi from GDGps Vasant Kunj, Delhi
Class : Class 4
C IS THE CORRECT ANS AS BOTH CLEAR PLASTIC SHEET AND TRACING PAPER ARE BOTH TRANSLUCENT AND HENCE ALLOWING EQUAL AMOUNT OF LIGHT TO PASS THROUGH.

Ans 14:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
AAAAAAAAA IS RIGHT

Ans 15:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
C is right and correct ,and if isnt tell me hhhhhhhhhhhhhhhooooooooooooooooooooowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwHOW?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????/

Ans 16:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 7

Ans 17:

Baibhab Tripathy from SAI INTERNATIONAL SCHOOL, BHUBANESWAR
Class : Class 7
I think the ‘A’ is the right answer

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ANANYA.SINGH from dps, noida
Subject :NSO    Class : Class 2

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saesha from sulochanadevi singhania school, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

R K Madhav from Kendriya Vidhyalaya Kottayam, Kottayam
Class : Class 7
4 km

Ans 2:

SRIJITA MURMU from DPS Joka, Kolkata
Class : Class 7
4km

Ans 3:

Reeth Bhasin from Jamnabai Narsee International School, Mumbai
Class : Class 5

Ans 4:

naman from PSBBM, Chennai
Class : Class 1
answer will be d 4 kilo meters

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Ved Parixit Brahmbhatt from Hillwoods School, Gandhinagar
Subject :NSO    Class : Class 9

Ans 1:

Aarthi from Prince matriculation higher secondary school , Chennai
Class : Class 9
SI unit of impluse is Newton

Ans 2:

Shrestha Dutta from Julien Day School, KALYANI
Class : Class 10
force=change in momentum/time interval(del t) impulse=change in momentum=force * time interval(del t) SI unit of impulse is newton second or Ns. CGS unit of impulse is dyne second .

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