National Science Olympiad Forum By SOF Olympiad Trainer - Page 499
  1. Home
  2. /  Forum

User Forum

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

Ans 1:

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 2:

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

Ans 3:

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 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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 9:

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

Ans 10:

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

Ans 11:

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 12:

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

Ans 13:

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

Post Your Answer

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

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 5
Aayansh from mundamarai

Ans 6:

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 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

Avigyan from DPS Numaligarh, Golaghat
Class : Class 5
tg4tg

Ans 12:

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

Post Your Answer

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

Post Your Answer

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

Ans 1:

Arnav Basu from faps, Bengaluru
Class : Class 6
b

Ans 2:

Kashika Goel from DPS Noida, Noida
Class : Class 7

Ans 3:

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

Post Your Answer

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.

Post Your Answer

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Post Your Answer

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

Ans 1:

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 2:

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

Ans 3:

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 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 11:

vighneshwar from study hall, Lucknow
Class : Class 5
A

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

Ans 17:

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.

Post Your Answer

Navya Ojal from Mpv Mysore, Mysore
Subject :NSO    Class : Class 4

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
D

Ans 2:

vivaan sethi from GD goenka public school, Delhi
Class : Class 4
the correct ans is D

Post Your Answer

Asmita Bhowmick from Delhi Public School Vadodara, Vadodara
Subject :NSO    Class : Class 8

Ans 1:

Ritoma gupta from BDMI, Kolkata
Class : Class 8

Ans 2:

Chandan Gupta from Naihati Narendra Vidya Niketan, Naihati
Class : Class 8
Can you explain how it is working

Ans 3:

Satvik Mehta from St Andrews school Bowenpally, Secunderabad
Class : Class 4
It should be a

Ans 4:

keosha jain from saint francis convent intercollege , jhansi
Class : Class 8
please explain

Ans 5:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
answer should be a

Ans 6:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8

Ans 7:

Shailja from The Pentecostal assembly school, Bokaro
Class : Class 8

Post Your Answer

Anushka Srivastava from Cjm, Dehradun
Subject :NSO    Class : Class 6

Ans 1:

malhar thorve from city internqtional school, satara road, pune
Class : Class 7

Ans 2:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10
The correct answer is option B . Clearly , the ligaments hold the bones together at joints and cartilage acts as a cushion that acts as a shock absorbent .

Ans 3:

Punya Paras Sundrani from Anand Niketan , Ahmedabad
Class : Class 7
it is nonsense

Ans 4:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10

Post Your Answer