National Science Olympiad Forum By SOF Olympiad Trainer - Page 571
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Simarasees kaur from VENKATESHWAR GLOBAL SCHOOL, New Delhi
Subject :NSO    Class : Class 10

Ans 1:

Bitan Chakraborty from Adamas international school, Kolkata
Class : Class 10
yes it happens but i have no solution

Ans 2:

Bitan Chakraborty from Adamas international school, Kolkata
Class : Class 10
you check in YouTube

Ans 3:

Bitan Chakraborty from Adamas international school, Kolkata
Class : Class 10
or in google

Ans 4:

Bitan Chakraborty from Adamas international school, Kolkata
Class : Class 10
or in google

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kalra Shaleen from Jalandhar, Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

kalra Shaleen from Jalandhar, Jalandhar
Class : Class 5
The answer is D

Ans 2:

Aneesh Balaji from BVBARR school, Hyderabad
Class : Class 9
d

Ans 3:

Santina Suzanne from owis, bangalore
Class : Class 3
I but a but it tells I put b

Ans 4:

kalra Shaleen from Jalandhar, Jalandhar
Class : Class 5

Ans 5:

Karthik from TMS, Dubai
Class : Class 3
Ans:A...But I put D

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kalra Shaleen from Jalandhar, Jalandhar
Subject :NSO    Class : Class 3

Ans 1:

kalra Shaleen from Jalandhar, Jalandhar
Class : Class 5

Ans 2:

Prathyush from Greenwood High Bannerghatta, Bangalore
Class : Class 7
the answer is c}

Ans 3:

kalra Shaleen from Jalandhar, Jalandhar
Class : Class 5
The answer is C

Ans 4:

Senaraj Chintagumpala from Delhi Public School East, Bangalore
Class : Class 3
c

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

Shreya Mahesh from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 8
It is polyester and not polythene. Therefore B is the right answer. Rayon IS regenerated from wood pulp.

Ans 2:

Anvi Jain from School, City
Class : Class 10

Ans 3:

Sampurna Mandal from DAV Public School Jagganath Talcher, Angul
Class : Class 8
Thanks for the answer

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Rehan Agrawal from Indian School Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

Student from School, City
Class : Class 8
B is the Wrong Answer. Protons do not move as they are fixed to their nuclei.

Ans 2:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
B should be the correct answer

Ans 3:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
B is the correct answer, as the protons might be a part of the nucleus, but the nucleus as a whole is a positively charged particle as well, therefore, it moves to right

Ans 4:

Tarun from Narayana school, Chennai
Class : Class 8

Ans 5:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7

Ans 6:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
B is wrong, as protons cannot move from their positions in an atom.

Ans 7:

ATANU DAS from ALLEN CAREER INSTITUTE , KOTA
Class : Class 9
Option (D), electrons move from left to right & the protons are stable in the nucleus and they never move.

Ans 8:

Amrit Biswas from INDUSVALLEY PUBLIC SCHOOL, Noida
Class : Class 10
B is correct answer because,as we know protons are heavy and dont move but due to the movement of electrons protons are pushed towards the opposite direction

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Anshita Bardoloi from Delhi Public School Guwahati, GUWAHATI
Subject :NSO    Class : Class 5

Ans 1:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is A because of this relationship: Sedimentary : Metamorphic : Igneous

Ans 2:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is A because of this relationship: Sedimentary : Metamorphic : Igneous

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Rehan Agrawal from Indian School Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1:

Shreya Mahesh from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 8
Option A

Ans 2:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Solution States that "correct" answer is wrong!

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Atul Sanjeev from Indian School Al Ghubra, Muscat
Subject :NSO    Class : Class 5

Ans 1:

Alay Shah from Euro School, Thane
Class : Class 5
Explanation in the solution is not matching any options. According to explanation option one and three are correct.

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yana from VIDYA VIKASINI HIGH SCHOOL, VASAI
Subject :NSO    Class : Class 4

Ans 1:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
coffee powder

Ans 2:

Shaurya Suryawanshi from The Orbis school, Pune
Class : Class 7
It's chalk powder

Ans 3:

Saarang roy from Indian school ghubra, Muscat
Class : Class 6
The correct answer is d chalk powder because it is insoluble in water while the rest are not.

Ans 4:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
my actual answer is salt

Ans 5:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
Ans-d

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Coffee Coffee Coffee Coffee Calls out Calls out the answer is C in the answer it is me it is me it is me

Ans 7:

NARAYANAN VENKITASUBRAMANI from THE PSBB MILLENNIUM SCHOOL, Coimbatore
Class : Class 8

Ans 8:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
why is chalk powder the correct answer?

Ans 9:

yajur from dps vk, delhi
Class : Class 3

Ans 10:

ANAY GUPTA from CMS KANPUR ROAD LUCKNOW, LUCKNOW
Class : Class 8
salt for the way

Ans 11:

Ashwak from Cambridge, Jalandhar
Class : Class 9
chalk powder is insoluble in water while others are soluble, chalk powder can be separated from water by sedimentation and decantation or filtration but others need evaporation...… Now I think Harsh you understood why the answer is D!!

Ans 12:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9
The correct answer is C . It will be coffee power.

Ans 13:

Shaurya Suryawanshi from The Orbis school, Pune
Class : Class 7
It's chalk powder

Ans 14:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7
Coffee powder

Ans 15:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
coffee powder

Ans 16:

Aryan Bomanwar from Chirec international School, HYDERABAD
Class : Class 6
It's C coffee powder.

Ans 17:

Student from School, City
Class : Class 8

Ans 18:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is D because D cant desolve in water while others can.So the answer is D.

Ans 19:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
salt

Ans 20:

Naitik Banerjee from DPS Ruby Park Kolkata, Kolkata
Class : Class 5
The correct answer is d

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yajur from dps vk, delhi
Subject :NSO    Class : Class 4

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
How 5? answer is 4The shapes are:circle,triangle,rectangle and square

Ans 2:

Shaurya Shrivastava from Amanora school, Pune
Class : Class 6

Ans 3:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
55555555555555555555555555555555555555555 is the ans

Ans 4:

ayurda prasad from Delhi Public School, Faridabad
Class : Class 3
ayurda 4 d 4

Ans 5:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
There is no semicircle.Answer is 4.

Ans 6:

Atharva Batra from Modern Delhi Public School, Faridabad
Class : Class 4
5

Ans 7:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is D) 4

Ans 8:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
5

Ans 9:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
semicircle is there but made by square so the answer is 4

Ans 10:

Shaurya Shrivastava from Amanora school, Pune
Class : Class 6
all listen it should be 5 as i think because the rectangle is dividing the circle into two halves which is forminig a semi circle and if sof has to 4 which means that it should be a whole shape like circle triangle etc.so if it is wholes shape SOF is right or elseNiteen Jit Sahu and all others who say semi circle are right

Ans 11:

Aalia Nair from Bombay Scottish School Mahim, Mumbai
Class : Class 4
4 IS THE CORRECT ANSWER

Ans 12:

Niteen Jit Sahu from Diya Academy of Learning, Bengaluru
Class : Class 7
5 is the answer because there is even semi circle there with rectangle,square and triangle.

Ans 13:

PARTH PANCHAL from NEW HORIZON SCHOLARS SCHOOL, THANE
Class : Class 7
the answer can even be 'B' as semi-circle is there ,made by square

Ans 14:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
Can you tell the answer of this question

Ans 15:

Sahanaa from Sancta Maria International School, Hyderabad
Class : Class 8
How are we supposed to know it’s a rectangle when hidden by the circle ,bonne nuit

Ans 16:

Aarav sugla from Niraj International School , Secunderabad
Class : Class 5

Ans 17:

Gunnit Kant from DPS, Nerul, Navi Mumbai
Class : Class 5
its d

Ans 18:

MIERA SHARMA from DPS AGRA, AGRA
Class : Class 8
IT SHOULD BE 5 AS THERE IS SQUARE TRIANGLE SEMECIRCLE RECTANGLE AND DIAMOND

Ans 19:

Mayukh chatterjee from Somerville School Noida, Noida
Class : Class 5
why semicircle not be counted

Ans 20:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 7
SEMICIRCLE5B

Ans 21:

Avya Pandey from NPS International, Singapore
Class : Class 8
b as there is a semi-circle

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