National Science Olympiad Forum By SOF Olympiad Trainer - Page 624
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sanjana from NARAYANA E TECHNO , Chennai
Subject :NSO    Class : Class 3

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
The answer key is wrong

Ans 2:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 8
very easy

Ans 3:

Arpit Sahoo from Oxford Angel Public School, DELHI
Class : Class 7

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Ujan Anam from Don Bosco Senior Secondary School, Nerul , Navi Mumbai
Subject :NSO    Class : Class 6

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Harsh shrivastava from Carmel convent high school, Ambernath
Subject :NSO    Class : Class 9

Ans 1:

Aman Rahman Mondal from Dav public school , Haldia
Class : Class 10

Ans 2:

from , Nanded
Class : Class 10
D is the correct answer as common carp is an omnivore. But over here the answer is given as A. please remove such glitches.

Ans 3:

SHIRIN BHATTACHARYYA from St. Joseph's Convent School, KHANDWA
Class : Class 10
D

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Yashasvika from Euro World School, Sri Ganganagar
Subject :NSO    Class : Class 5

Ans 1:

Kavin from ISG , Muscat, Muscat
Class : Class 5
D

Ans 2:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Class : Class 7
Seriously? The answer is D. It's a "RAP" not a "WRAP" and it is NATIONAL SCIENCE OLYMPIAD not "French, Spanish or Japanese Shing Shong" science Olympiad.

Ans 3:

Agnish Chakraborty from The Heritage School, Kolkata
Class : Class 7
It is D. And it is SOF not JSS.

Ans 4:

darsh gupta from S R D A V Public School, delhi
Class : Class 5
ans is d

Ans 5:

Raksheet Shah from Swami Vivekanad International School, Mumbai
Class : Class 8
it is d

Ans 6:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
It is D

Ans 7:

Yashasvika from Euro World School, Sri Ganganagar
Class : Class 5
how???

Ans 8: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 9:

Praket Tejas from Delhi Public School Indira Nagar Lucknow, Lucknow
Class : Class 4
l

Ans 10:

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

Ans 11:

Adyanshu Panigrahi from Montfort School, Dhenkanal
Class : Class 6

Ans 12:

Rishita Verma from Suncity School, Gurgaon
Class : Class 5
D

Ans 13:

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

Ans 14:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
its a

Ans 15:

Syeda Aleeza Zaidi from Somerville school Noida , Noida
Class : Class 5
How can it be A??i did DD

Ans 16:

Yajat Manoj from Vibgyor, Bengaluru
Class : Class 5
it surely is d :(

Ans 17:

ARCHISHA SIKDAR from CHOITHRAM MANIKBAG, INDORE
Class : Class 8
BUOYANT FORCE IS PROPORTIONAL TO VOLUME DISPLACED NOT WEIGHT

Ans 18:

Kavin Karthick M from DPS bangalore east, Bengaluru
Class : Class 6

Ans 19:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
Seriously option c are tongs or tweezers

Ans 20:

Athiya Mahapatra from ITL Public School, NewDelhi
Class : Class 5
From Athiya Mahapatra: Option)a As force Q and Z is Gravitational Force.

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Ansh Meshram from Fr agnel School, New Delhi
Subject :NSO    Class : Class 8

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Shaurya from Modern Public School, Bhiwadi
Subject :NSO    Class : Class 4

Ans 1:

Student from School, City
Class : Class 8
llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Ans 2:

Prakriti Singh from Ryan International School, Pune
Class : Class 4
B is the answer

Ans 3:

Pradhyumna from J S S Public School, Bengaluru
Class : Class 4
C is correct

Ans 4:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
how is B correct??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Ans 5:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
b is correct shivan dpga

Ans 6:

Utsavi Priya from DPS RUBY PARK, KOLKATA
Class : Class 8

Ans 7:

Student from School, City
Class : Class 8
lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllkkkkkkkkk

Ans 8:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8

Ans 9:

Manan thorat from Podar powai, Mumbai
Class : Class 4
B is the answer because bubbles are melting inside a pack cointanier so that procces is called as condenstation.

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Shaurya from Modern Public School, Bhiwadi
Subject :NSO    Class : Class 4

Ans 1:

Pradhyumna from J S S Public School, Bengaluru
Class : Class 4
B

Ans 2:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
thanks Jaya Shree

Ans 3:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2

Ans 4:

k tagore from montessori school, KURNOOL
Class : Class 3
The answer is b

Ans 5:

Sanaya Singh from Hiranandani Foundation, Mumbai
Class : Class 2
its b

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Mrinaal nandini from Kendriya Vidhyalaya Rohini sector 8, Delhi
Subject :NSO    Class : Class 4

Ans 1:

Kriti Bhonsale from Delhi Public School, Bengaluru
Class : Class 5
D IS THE ANSWER

Ans 2:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 3:

Shubh Mertia Jain from JBCN INTERNATIONAL School, Mumbai
Class : Class 4

Ans 4:

shreyash rawat from podar international school, pune
Class : Class 8
its [d] -overgrazing

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 6:

LAVANYA DADHWAL from BLOOM PUBLIC SCHOOL, South West Delhi
Class : Class 8
D is correct as when you will unscramble the other options all of them prevent soil erosion but D will not (A-embankments B-terrace farming C-afforestation D-overgrazing).....😄

Ans 7:

TARA NAUTIYAL from CONVENT OF JESUS AND MARY, DEHRADUN
Class : Class 4
the ans is D overgrazing

Ans 8:

Rahul from Cambridge school, noida
Class : Class 4
why option d that is overgrazing.... why not Terrace farming that is b

Ans 9:

Radhika Jain from Sushila Birla Girls' School, Kolkata
Class : Class 5
No doubt it is D ( A - EmbankmentB- Terrace FarmingC- Afforestation D - Overgrazing )( Others prevent soil erosion )

Ans 10:

Priyanshi from Delhi Public School, Gurugram
Class : Class 4
D is the correct answer

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Diya from DPS, Dubai
Subject :NSO    Class : Class 8

Ans 1:

Dhruvan G from Indian School al Ghubra, Muscat
Class : Class 9
What is the explanation or the solution for A?

Ans 2:

The Address from Somaiya, Mumbai
Class : Class 6
what is the explanation for A

Ans 3:

Prathamesh from DPS bhilai, Bhilai
Class : Class 9
count the lines and toatal horizontally. its 10 for first row, 12 for second and must be 14 for third, making it figure with 4 lines that is A as correct option.

Ans 4:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
What is the explanation for it being A?

Ans 5:

Ayush Gorain from Sarala Birla Public School, Ranchi
Class : Class 8
I would like to know what is the logic behind option (A) being the correct answer too.

Ans 6:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
But what if s the pattern.

Ans 7:

MEGHNA SARKAR from Delhi Public School'Rubypark,Kolkata, Kolkata
Class : Class 6

Ans 8:

anirudh from KV IIT, Madras, CHENNAI
Class : Class 8

Ans 9: (Master Answer)

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

Ans 10:

Student from School, City
Class : Class 8
Mr. Admin from revisewise, Noida, please include an explanation for your answer, A.You have, also, not provided a solution for this.

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Siddhi from Cambridge Court High School, Jaipur
Subject :NSO    Class : Class 5

Ans 1:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9

Ans 2:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7

Ans 3:

Deepika Goyal from Neerja modi school, Jaipur
Class : Class 7
B

Ans 4:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
Bbbbbbb!

Ans 5:

Jayaditya singh from Delhi Public School, gurgaon
Class : Class 9
It is a fact that the highest tides occur when the moon is full or new. In the diagram, the positions F and J are the full moons and new moons, so the correct answer should be B

Ans 6:

Siddhi from Cambridge Court High School, Jaipur
Class : Class 5
d and h are only the answers..

Ans 7:

Pratham Dave from GNS, Bangalore
Class : Class 7
B is the answer to this question

Ans 8:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
just because we can see the whole moon during a full moon dosen't mean that on that day there will be the greatest tides as the moon dosen't cut itself into half on 1st and 3rd quarter. So, the answer must depend on the distance of the moon from the earth as the gravitational pull of the moon will have more effect when it is closer to earth and will raise bigger tides. The moon is closest to earth at phases D and H. So, clearly the answer should be A

Ans 9:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7

Ans 10:

Divyanshi from United international School, Bangalore
Class : Class 6
The answer is (a) because when the full moon and new moon are there then the sun, earth and moon are aligned and the sun is also pulling at the sea forming big tides.

Ans 11:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Answer is B only.

Ans 12:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9
Even I think it is A

Ans 13:

Gayatri Iyer from Sanskriti School, Pune
Class : Class 9
Ohh yeah,, it is A

Ans 14:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 15:

Gauransh Singla from DPS , Navi Mumbai
Class : Class 5
the correct option is b

Ans 16:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Phases D and H are suitable. Or not?😄

Ans 17:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10

Ans 18:

Richeek from RN Podar School Santacruz, Mumbai
Class : Class 5
i have done this question and they are showing b

Ans 19:

Shabd from Hdfc, Gurgoan
Class : Class 6
I do with Harsh Sobti.

Ans 20:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Look at the diagram.........the faces of moon closest to the earth are D and H, hence the suitable solution is A

Ans 21:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
It should be B only .

Ans 22:

Akshaj Gupta from Neerja Modi School, Jaipur
Class : Class 7
Class:It should be A

Ans 23:

aarav shankar from st xaviers high school, gurugram
Class : Class 7
It is B. Don't go on the picture. Full and new moon are always closer to Earth.

Ans 24:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon
Class : Class 8

Ans 25:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
It is (A)

Ans 26:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
how is it b, it should be a

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