National Science Olympiad Forum By SOF Olympiad Trainer - Page 492
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Gauri Singh from St Johns School Marhauli, Varanasi
Subject :NSO    Class : Class 6

Ans 1:

Syed Mukhtar Ahmed from Mayoor Private School, Abu Dhabi
Class : Class 6

Ans 2:

rocker harshil from TImpany senior secondary school, Visakhapatnam
Class : Class 6
as only the option (D) will be magnetic and the SOFT IRON will act as a keepers

Ans 3:

arjun from the bishops school camp , pune
Class : Class 8

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Agastya Tripathi from dps gurgaon, Gurgaon
Subject :NSO    Class : Class 5

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is B

Ans 2:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans should be A because tuemeric powder is solid and solids are incompressible. Liquids are also incompressible but the some of the liquid has gone above the end of the piston, which is inside the syringe. Gases are compressible, so the piston easily moves.

Ans 3:

Ujjwal Upadhyay from Navy Children school, Vasco
Class : Class 6
Well... I think the answer is B

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student from school, city
Subject :NSO    Class : Class 6

Ans 1:

NISHTHA GUPTA from DPS R K Puram, newdelhi
Class : Class 10
solution?

Ans 2:

BHAVYA from iswk, Oman
Class : Class 6
can I have an explanation please....... plz...plz...plz...

Ans 3:

Neil Mathew from National Public school, bengaluru
Class : Class 8
How is it C!?

Ans 4:

Anushka Srivastava from Cjm, Dehradun
Class : Class 7
its C acording to me

Ans 5:

Shreyas from Phoenix greens, Hyderabad
Class : Class 9

Ans 6:

Lakshmi from FPS, Bangalore
Class : Class 10
c is the answer

Ans 7:

Saikrishna Nandakumar from Shishya BEML Public School, BANGALORE
Class : Class 6
c

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Shreenath Rajesh Nair from J H A S V Surat, Surat
Subject :NSO    Class : Class 8

Ans 1:

arav agrawal from kaanger valley academy, Raipur
Class : Class 9

Ans 2:

Pranavi Nayakwadi from JSS Shri Manjunatheshwara Central School, Dharwad
Class : Class 8
I too think the correct ans is C rather than A

Ans 3:

Ami Buch from DPS Gandhinagar, Gandhinagar
Class : Class 6
After checking the Snell's law, I found the answer to be C...But it says the correct answer is A

Ans 4:

Madhav from Aggarsain Public School, Kurukshetra
Class : Class 9
correct answer is C

Ans 5:

Shreyam Tripathy from Ann Mary School, Dehradun
Class : Class 10
answer is C

Ans 6:

Abhinav from nesss, vadodara
Class : Class 10
I too think correct option is C

Ans 7:

Pujan Rajyaguru from Allen, Ahemdabad
Class : Class 8
yes i think that opt C is correct

Ans 8:

Prisha Hemchandra Lokhande from NPS Whitefield, Bangalore, Bangalore
Class : Class 8
The answer is C because the ray would refract and be parallel to incident ray. also the emergent ray cant appear behind the incident ray

Ans 9:

Kaavyy boolani from Cambridge Court World School, Jaipur
Class : Class 6
It is Option C only, as when light travels from denser to rarer medium, it bends away from normal

Ans 10:

Ved Pandhare from Lilavatibai Podar High School, Mumbai
Class : Class 8
correct answer is C as the ray would refract if its passing from a rarer to denser medium.

Ans 11:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
It's A.When light travels from a denser to rarer medium,it bends TOWARDS the normal(Check normal in solution).Hence,answer is A.

Ans 12:

arav agrawal from kaanger valley academy, Raipur
Class : Class 9

Ans 13:

Triguna from Kendriya Vidyalaya No.1 Salt Lake, Kolkata
Class : Class 8
Me too... I also think that the correct option will be C

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 4

Ans 1:

Gunnit Kant from DPS, Nerul, Navi Mumbai
Class : Class 5
C

Ans 2:

Sanjeev Kumar Singh from S N B P INTERNATIONAL SCHOOL PUNE, RAHATANI
Class : Class 4

Ans 3:

Sushree snehasikta behera from Mother's public school , Bhubaneswar
Class : Class 2
Sushree Snehasikta Bhera from Mother's Public school, Odishaclass 4Answer is c as cockroach has three stages in its life cycle and also the young one of the cockroach resembles the adult. The housefly also has three stages in its life cycle and also does not resemble its adult.

Ans 4:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
Aayansh from mundamarai

Ans 5:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Shuchi: P is an organism which has three stages in its life cycle. The young one is very similar to its parent.Ritu: Q is an organism which has four stages in its life cycle. The young one is very different from its parent.Now, let’s see which of the following options gives the right identities of Organisms P and Q:

Ans 6:

AAGNEY GOYAL from VENKATESHWAR INTERNATIONAL SCHOOL, Delhi
Class : Class 4

Ans 7:

Adarsh Kishor from Manav Rachna International Sector46, Gurgaon
Class : Class 4
I GOT 40/40 IN THIS QES. PAPER

Ans 8:

Avigyan Gaurab from DPS Numaligarh, Golaghat
Class : Class 4
tg4tg

Ans 9:

Sanjeev Kumar Singh from S N B P INTERNATIONAL SCHOOL PUNE, RAHATANI
Class : Class 4
c

Ans 10:

Ananya Singh from Chrysalis High School, Bengaluru
Class : Class 4

Ans 11:

AVANTIKA V from Amrita Vidyalayam Puducherry , Puducherry
Class : Class 4
Ans: C

Ans 12:

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

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

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SHAUNAK from St Xaviers School, HAZARIBAG
Subject :NSO    Class : Class 3

Ans 1:

Arnav Basu from faps, Bengaluru
Class : Class 6
b

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
B

Ans 3:

Kashika Goel from DPS Noida, Noida
Class : Class 7

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SHAUNAK from St Xaviers School, HAZARIBAG
Subject :NSO    Class : Class 3

Ans 1:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
The correct answer is B.

Ans 2:

SHAUNAK from St Xaviers School, HAZARIBAG
Class : Class 3
B is the right answer.

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Nishtha Mishra from bal bharti public school, new delhi
Subject :NSO    Class : Class 3

Ans 1:

Aatreyu from vpms, pune
Class : Class 6
B . (2.1cm)

Ans 2:

ARIV GARAI from DPS MEGACITY,KOLKATA, KOLKATA
Class : Class 3

Ans 3:

Aatreyu from vpms, pune
Class : Class 6
B . (2.1cm)

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ishit from EUROSCHOOL THANE, THANE WEST
Subject :NSO    Class : Class 4

Ans 1:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7
A 30

Ans 2:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7
A 30

Ans 3:

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

Ans 4:

vighneshwar from study hall, Lucknow
Class : Class 5
A

Ans 5:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Vighneshwar , Bhavya and Anika can you tell me how the answer is A ??? Why are you telling the wrong answer ???

Ans 6:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 7:

Bhavya Jain from K R Mangalam World Scholl, GHAZIABAD
Class : Class 4
Answer should be A as 6 x 5 =30

Ans 8:

Bhavya Jain from K R Mangalam World Scholl, GHAZIABAD
Class : Class 4

Ans 9:

Sridatri Deb from Euro School Airoli, MUMBAI
Class : Class 4
no repetition of same pairs ( like AB and BA )

Ans 10:

Naavya Kapoor from St Gregorios High school , Mumbai
Class : Class 6

Ans 11:

Suniti Kumar Ghosh from Holy Angels' School, Katwa
Class : Class 8
C 15

Ans 12:

Sridatri Deb from Euro School Airoli, MUMBAI
Class : Class 4
the solution is correct as this is not combination this is just simple paring that is converted to handshakes . answer is C

Ans 13:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
AAAAAAAAAAAAAAAAAAAAAAA = Answer

Ans 14:

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

Ans 15:

Bhavya Jain from K R Mangalam World Scholl, GHAZIABAD
Class : Class 4
Answer is A

Ans 16:

Aryan Swain from Kendriya Vidyalaya, Barimul, Kendrapara
Class : Class 5
As said in the solution no repeating of same pairs (AB and BA) so 15 is correct.

Ans 17:

Arnesh from DPS Mathura Road , New Delhi
Class : Class 7
the correct answer is D

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