National Science Olympiad Forum By SOF Olympiad Trainer - Page 449
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mystic bro7pro from arbor school, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Akshansh Sharma from St Kabir Public School, Chandigarh
Class : Class 5
good

Ans 2:

Cheshika batra from Our lady of Fatima convent school, Patiala
Class : Class 5
B

Ans 3:

Vaibhav Elisetti from sri chaitanya techno school Nallagandla, Hyderabad
Class : Class 7
the ans is B

Ans 4:

Mukta Pundir from ,
Class : Class 7
Guys plz don’t confuse co2 with o2. Also it is c as nitrogen isn’t there. Also d is not ordered correctly

Ans 5:

Ramya Bn from Ryan International school, Bangalore
Class : Class 6

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Arpan A Shettihalli from APS Public School, BENGALURU
Subject :NSO    Class : Class 7

Ans 1:

Mayank Mili from Delhi Public School, Golaghat
Class : Class 9
answer is D

Ans 2:

Midhuna from ABCD, Banglore
Class : Class 3
not clear plz explain.aNYbODY hOMe

Ans 3:

Mayank Mili from Delhi Public School, Golaghat
Class : Class 9

Ans 4:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
IT IS NOT CLEAR CAN SOMEONE EXPLAIN???

Ans 5:

dhairya mittal from vidyashram international school jodhpur, Jodhpur
Class : Class 5
Not clear

Ans 6:

Arpan A Shettihalli from APS Public School, BENGALURU
Class : Class 7

Ans 7:

Tanushree from Asian International School, Colombo
Class : Class 7
Can someone explain why??🤔

Ans 8:

Sourasis kundu from St.agnes higher secondary School, Kharagpur
Class : Class 6
study more books

Ans 9:

Shreyanka ghosh from Don Bosco Park Circus, Kolkata
Class : Class 9
not clear

Ans 10:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
I cannot understand it

Ans 11:

Akshat Ghosh from HXLS, Gurgaon
Class : Class 5

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indranil batabyal from st michael school, bankura
Subject :NSO    Class : Class 7

Ans 1:

Viraj Chauhan from Air Force Bal Bharati School, New Delhi
Class : Class 7
Here, we can see that there are 4 beakers of same length but different widths. So, we can conclude that the widest beaker (beaker-2) has the most water as it will have biggest volume, and the least wide beaker (beaker-3) has the least water as it will have lower volume. Now, when 100 gm of ice is added to all the beakers, ofcourse the beaker with the least volume will cool down first as heat exchange will be least. Now let's see the statements: A- No, beaker-2 has the most water making bigger heat exchange hence it would take most time to cool down. B- No, there is very less water for heat exchange hence ice will melt very late in beaker-2. C- No, there are different amounts of water in all beakers so this is incorrect. D- Yes, it has the least water hence it will cool down fast and more. Correct answer- D.

Ans 2:

chaitanya gupta from KANHA MAKHAN MILLENIUM SCHOOL, MATHURA
Class : Class 7

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jamuna pandian from TVS matriculation , MADURAI
Subject :NSO    Class : Class 3

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Tejas Kapoor from Vissanji Academy, Mumbai
Subject :NSO    Class : Class 5

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Chandreyee from BGKV, Kolkata
Subject :NSO    Class : Class 10

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Sarisha Agarwala from dhirubhai ambani international school, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

soumil srivastava from dps, paradip
Class : Class 9
your answer is wrong baking soda neutralize forming acid

Ans 2:

Dhruva from VSSIPS, Bangalore
Class : Class 7
The answer has to be option A

Ans 3:

Amogh from Sindhi High School, Bangalore
Class : Class 7
yes

Ans 4:

Bhargavi from bvb, Pune
Class : Class 7
yes

Ans 5:

from Podar International School,Dhule, Dhule
Class : Class 8
answer should be option a . Baking Soda is used to neutralize forming acid

Ans 6:

Aditi Anurag from RBK Kanakia School, Thane
Class : Class 8
The answer is option A as baking soda neutralizes the effect of the formic acid

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divanshi from sacred heart convent school, barnala
Subject :NSO    Class : Class 9

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Alvin Anto Ambooken from Stfrancisicse, Bangalore
Subject :NSO    Class : Class 3

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Shreetej from Pearson public school, Pune
Subject :NSO    Class : Class 5

Ans 1:

Cheshika batra from Our lady of Fatima convent school, Patiala
Class : Class 5
H

Ans 2:

Pracheta Satapathy from Cygnet Public school, Pune
Class : Class 6
answer option(d)ie H

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