National Science Olympiad Forum By SOF Olympiad Trainer - Page 145
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Ishan Shankar from Delhi Public School, Dhanbad
Subject :NSO    Class : Class 7

Ans 1:

Antareep Mukherjee from New Horizon Public School, Bangalore
Class : Class 8

Ans 2:

arnav raj sharma from gulibulium school, new york
Class : Class 8
THAT DOESN'T MAKE SENSE. the diagram has no relation to the questions or the options because the figure of the concentration of oxygen in blood of something but the options and the questions are related to plants. the labels in the diagram are P,Q,R,S meanwhile the labels in the questions areX,Y,Z. There are a lot of errors like this that I am facing nowadays so I would kindly request S O F to please correct these issues ,specially in chapterwise

Ans 3:

Aanvi Singhal from OWIS INTERNATIONAL SCHOOL , Sarjapur Road
Class : Class 7

Ans 4:

A Mohammed Yusuf from national acadamy central school , ramnathapuram
Class : Class 7
wth is this question the diagram or the question has no relaiton to the option

Ans 5:

Arun from SOT, chennai
Class : Class 6
Exactly right!

Ans 6:

RIYA D MARGHADE from TVS VELAMMAL VIDYALAYA PONNERI, CHENNAI, CHENNAI
Class : Class 2
wrong questionno relation between the diagram and optionno sense

Ans 7:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
With due respect, I'd like to bring in SOF's notice that the diagram in the above question is incorrect. The diagram given above is of the concentration of blood in four men, whereas here, we have asked about the functions of some marked plant parts. I ask SOF to rectify this error,

Ans 8:

Anadya Singh from The Modern School, Faridabad
Class : Class 7
wrong diagram according to the question!!

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Pranav Sharma from Pacific World School, Greater Noida
Subject :NSO    Class : Class 7

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Ayushman Garg from N.K Bagrodia Public school, Delhi rohini
Subject :NSO    Class : Class 6

Ans 1:

Eksha from JBM GLOBAL SCHOOL, Noida
Class : Class 6
shall be BBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 2:

Anish Kumar from Dehli Public School, Bopal, Ahmedabad
Class : Class 7
The earth's north pole acts like a south pole to the magnet as it attracts the north pole of a magnet (The earth's north pole attracts the north pole of a magnet). This means that the needle of a compass is always the north pole. So, the needle will point to the south pole of the other magnet. In simple words, the North pole of the earth is actually the south pole for a magnet.

Ans 3:

tyt from saltlake school, kolkata
Class : Class 6

Ans 4:

georgy mathew from St thomas residential school, Trivandrum
Class : Class 6
But a compass always points to the magnetic north pole, not geographic north pole right?

Ans 5:

Einya Prasad Mhatre from Thakur School Of Global Education , Mumbai
Class : Class 6
Shouldn't the correct answer be (A), since a compass needle ALWAYS points in the North Direction? Pls Help.

Ans 6:

Sumita Kundu from Vels Global School , Kolkata
Class : Class 6

Ans 7:

hari teja from st andrews high school,, secunderabad
Class : Class 6
it should be ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 8:

Ayaansh Gaur from Neerja Modi school, Jaipur
Class : Class 6
The needle should point towards South pole because the Earth's North Pole is actually the South pole of a bar magnet. Compass needle always points to the geographical North pole.

Ans 9:

Sahanaa from Sancta Maria International School, Hyderabad
Class : Class 8

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Advika Singh from The Tribhuvan School, Patna
Subject :NSO    Class : Class 8

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Aman singh from Service convent sr. sec school, Narmadapuram
Subject :NSO    Class : Class 6

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geethasree from Carmel School, Banglore
Subject :NSO    Class : Class 6

Ans 1:

Rachita Gupta from New Era Higher Secondary School, Vadodara
Class : Class 7
answer should be 9

Ans 2:

Aditi Kanhucharan Nayak from Heritage international School, Kalyan
Class : Class 6
How 11cm

Ans 3:

Vedang Shridhar Sasturkar from Vasant Valley School, New Delhi
Class : Class 7

Ans 4:

geethasree from Carmel School, Banglore
Class : Class 8
Can anyone please explain?

Ans 5:

Aarav Gupta from Mondrian House, DEHRADUN
Class : Class 7
Kindly explain.......

Ans 6:

Arush Singh from DPS Kashi, Varanasi
Class : Class 6
explain

Ans 7:

Shivani from DPS North school , Bangalore
Class : Class 7
@Rachita Gupta- They are asking how far away boy-y would appear to be from BOY-X not the mirror so I'm guessing it should be 9m.

Ans 8:

Soham Thalpati from Podar International School, Ambegaon, Pune
Class : Class 6
please explain

Ans 9:

JULFIKAR CHOWDHURY from Apeejay Nerul, mumbai
Class : Class 8
Please explain

Ans 10:

Arihant Medhi from Dps Barasat, Kolkata
Class : Class 8
Yes austin

Ans 11:

AUSTIN from Viswajyothi CMI Public School, Chowara
Class : Class 7
it is 9m as 12m - 5m = 7m , 7m 2m = 9m , kindly the correct answer is 9m .

Ans 12:

Avighna Shastri from doha modern indian school, doha
Class : Class 2
12-5 =7 7 2=9answer is 9

Ans 13:

Eksha from JBM GLOBAL SCHOOL, Noida
Class : Class 6
Should be ( as 12 2

Ans 14:

Abhijit kumar from Xavier school, Jamshedpur
Class : Class 6
9 should be the answer

Ans 15:

AUSTIN from Viswajyothi CMI Public School, Chowara
Class : Class 7

Ans 16:

Eksha from JBM GLOBAL SCHOOL, Noida
Class : Class 6

Ans 17:

Vedang Shridhar Sasturkar from Vasant Valley School, New Delhi
Class : Class 7
Tis is not in synopsis

Ans 18:

Harsha Godithi from B V M GLOBAL, Chennai
Class : Class 6

Ans 19:

Kaushik shekhar patra from St. arnold's school, Rourkela
Class : Class 7
The answer should be 9

Ans 20:

from ,
Class :
Please give more questions like this

Ans 21:

Avighna Shastri from doha modern indian school, doha
Class : Class 2
12-5=77*2=14that should be the answer

Ans 22:

Sahanaa from Sancta Maria International School, Hyderabad
Class : Class 8
Does anyone understand this?

Ans 23:

Saharay Megha Shirsendu from Sabari Vidyalaya, Vadodara
Class : Class 8
Correct answer is 9m. Already explained in olympaid prep-guide book.

Ans 24:

Shivani from DPS North school , Bangalore
Class : Class 7
It's nine.

Ans 25:

Srijato Bhattacharya from The Global Edge School, Kokapet Branch, Hyderabad
Class : Class 6
Here it is asking how far away boy Y would APPEAR to be in the mirror to boy X, as in, from boy X's perspective. Y is 12 m away from the MIRROR. He moves 5 m closer12-5=7This is where confusion may set in. A lot of people have added X's distance from the mirror(2 m)7 2=9Here, we are getting the total as 9 m.. However, it is also necessary to add 2 m for the reflected ray to travel to X so that he can see the image.9 2=11Hence, the answer is 11 m.

Ans 26:

JULFIKAR CHOWDHURY from Apeejay Nerul, mumbai
Class : Class 8

Ans 27:

muhammad bilal s from indian public school, banglore
Class : Class 6
answer is 9

Ans 28:

Agniv Sengupta from PaathShala Amstelveen, Netherlands
Class : Class 6
The answer should be 9m as 12 2=14-5=9

Ans 29:

Arjun from S.P.M PUBLIC ENGLISH MEDIUM SCHOOL, PUNE
Class : Class 6

Ans 30:

hari teja from st andrews high school,, secunderabad
Class : Class 6

Ans 31:

Shivani from DPS North school , Bangalore
Class : Class 7
@ Rachita Gupta-I don't know I'm confused now.

Ans 32:

Rachita Gupta from New Era Higher Secondary School, Vadodara
Class : Class 7
the distance in the mirror of boy y would be 9m but distance from mirror to boy x would be 9 plus 2= 11

Ans 33:

Vriksh Roy Meharia from DPS Bangalore East, bangalore
Class : Class 6

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HARDIK JANA from BIRLA HIGH SCHOOL MUKUNDAPUR, Kolkata
Subject :NSO    Class : Class 2

Ans 1:

Reyansh Sharma from National public school, hsr layout, bangalore
Class : Class 7
It is so easy

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Apoorv Raut from Podar International School Jalna, Jalna
Subject :NSO    Class : Class 10

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Abhishek kumar from Delhi public school, Gaya
Subject :NSO    Class : Class 8

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Sreyas from Don Bosco, Park Circus, Kolkata
Subject :NSO    Class : Class 4

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