National Science Olympiad Forum By SOF Olympiad Trainer - Page 644
  1. Home
  2. /  Forum

User Forum

Ask Your Question
rishi karthik from Bvm Global, chennai
Subject :NSO    Class : Class 5

Ans 1:

Diva wahgmare from Podar learn school, Pusad
Class : Class 5
B

Ans 2:

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

Ans 3:

Pratham Dave from GNS, Bangalore
Class : Class 7

Ans 4:

Arnav kaul from Chirec, Hyderabad
Class : Class 2

Ans 5:

Jinisha Mahajan from Delhi Public School Jalandhar , Jalandhar
Class : Class 5
Answer will be option C as the dots are dust particles only

Ans 6:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
I by mistake marked D the correct option is c

Post Your Answer

OISHIK KUNDU from Delhi Public school North kolkata, baranagar
Subject :NSO    Class : Class 4

Ans 1:

Soorya Tej R from Delhi Public School, Hyderabad
Class : Class 6

Ans 2:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
E E E E E

Ans 3:

Bk Tiwari from S.D.A, Surat
Class : Class 9
why c

Ans 4:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
teeth are made of tough material called enamel .

Ans 5:

Kriti Bhonsale from Delhi Public School, Bengaluru
Class : Class 5
i do not understand it

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
I agree with the solution given. Anand is right as a tooth also includes dentine as well as enamel. If it would have been,'The covering of a tooth is dentine.',it was wrong. Bhavya Jain check the solution.

Ans 7:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
all are wrong

Ans 8:

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

Ans 9:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 10:

Amrit Priyadarshi from kanakia International School , Mumbai
Class : Class 6
Everyone's statements look wrong but the option is not there . Correct answer- {E} all are wrong

Ans 11:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
Answer: option C

Ans 12:

PARTH PANCHAL from NEW HORIZON SCHOLARS SCHOOL, THANE
Class : Class 7
lllllllllllllllllllllllllllllllllllllllll

Ans 13:

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

Ans 14:

Punyatoya from Harvest, Bengaluru
Class : Class 8
All the teeth have root,crown,neck but their SHAPE is different so Anand is correct.

Ans 15:

Kishore Kadiyala from NPS, BANGALORE
Class : Class 5
the correct answer is c because premolars and molars are a set of permanent teeth only.

Ans 16:

Daksh Chanani from Sri Sri academy, Kolkata
Class : Class 7
Digestion of food takes place in small intestine whereas absorption of water from remaining undigested food takes place in large intestine. Premolars and few molars are not present in milk teeth set.

Ans 17: (Master Answer)

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

Ans 18:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
I think the question is wronghow can digestion occur if there is no small intestine? so ans is D

Ans 19:

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

Ans 20:

Amrit Priyadarshi from kanakia International School , Mumbai
Class : Class 6
the answer is not A nor B,C or D

Ans 21:

Anahita Saxena from Ryan International School Pune, Pune
Class : Class 3
Look here there is some problem. The correct answer is not there. Amrit is right. but all are not wrong. Anand and Rajesh are wrong. So, the correct answer will be E (which is not there actually. I made it myself because the correct answer was not there.) Rajesh and Anand.

Ans 22:

Tashvika from JHS, Bangalore
Class : Class 4
All are wrong

Ans 23:

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

Ans 24:

PARTH PANCHAL from NEW HORIZON SCHOLARS SCHOOL, THANE
Class : Class 7
nknnnk

Ans 25:

Kishore Kadiyala from NPS, BANGALORE
Class : Class 5
the correct answer is c

Ans 26:

Navvi Maya KPR from Sacred Heart Matriculation Higher Secondary School, Chennai
Class : Class 8
C is the correct answer because the solution is like that. So i think it is the correct one !

Ans 27:

Shivangi Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 8

Ans 28:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7
Rajesh and Anand are wrong I emphasis more about Anand because the tough material in the teeth is it's enamel not the dentine.

Post Your Answer

Subhra from Zps, Tamluk
Subject :NSO    Class : Class 3

Ans 1:

SS from meridian, hyderabad
Class : Class 5
ohh

Ans 2:

Shruti from ,
Class : Class 1
d not a

Ans 3:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
oops (D)

Ans 4:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
wronggggggggggggggggggggggggg

Ans 5:

SONAM BARAI from DAV PUBLIC SCHOOL, sambalpur
Class : Class 5
D

Ans 6:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 4
Answer is D

Ans 7:

Havi Jain from GEMS modern academy, Gurgaon
Class : Class 8
the answer is (A)

Ans 8:

SAI KRISHNA from SHISHYA BEML PUBLIC SCHOOL, BANGALORE
Class : Class 3
The answer should be A

Ans 9:

Anagh Agrawal from Billabong high, JABALPUR
Class : Class 3

Post Your Answer

Riddhiman Bose from Don Bosco School, Kolkata
Subject :NSO    Class : Class 3

Ans 1:

SONAM BARAI from DAV PUBLIC SCHOOL, sambalpur
Class : Class 5
C

Ans 2:

S Malhotra from SFS , New Delhi
Class : Class 5

Ans 3:

Nivedha from Greenwood High, Bengaluru
Class : Class 3
What about frosted glass? That doesn’t cast a shadow!!! It casts a light kind of thing!!!!

Ans 4:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5
In my exam I made the same mistake!!!!

Ans 5:

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

Ans 6:

Nivedha from Greenwood High, Bengaluru
Class : Class 3
Oh thank you so much!!!!!!

Post Your Answer

Riddhiman Bose from Don Bosco School, Kolkata
Subject :NSO    Class : Class 3

Ans 1:

Rishit Garg from Bhavan s B P Vidya Mandir , Nagpur
Class : Class 9
answer should option c as moons between earth and sun so it means z is between x and y

Ans 2:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
Nnnnnjnjnjnnjkjnknbhbjnnbnbnb

Ans 3:

Vihaan kohli from MVN Aravali, Faridabad
Class : Class 3
b

Ans 4:

Shrihan Raul from GIIS SINGAPORE, Singapore
Class : Class 6
its b because the earth or the sun can be x or y and moon is z

Ans 5:

samarth kshatriya from delhi public school,bhilai, bhilai
Class : Class 3
the correct answer is B

Ans 6:

Samik Praveen from Euro School Airoli, Mumbai
Class : Class 6
I caould not even see the full question

Ans 7:

samarth kshatriya from delhi public school,bhilai, bhilai
Class : Class 3
class-3

Ans 8:

Ritwika Biswas from KV no 1 , Goa
Class : Class 7
vvvvdtryvvdfsdt,

Ans 9:

SONAM BARAI from DAV PUBLIC SCHOOL, sambalpur
Class : Class 5
B

Post Your Answer

Riddhiman Bose from Don Bosco School, Kolkata
Subject :NSO    Class : Class 3

Ans 1:

Senaraj Chintagumpala from Delhi Public School East, Bangalore
Class : Class 3
ursa major means the great hunter

Ans 2:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5
rteweewwwwwwwwwwwww

Ans 3:

Dyanesh from Lakshmi School, Madurai
Class : Class 5

Ans 4:

Anargha Nandi from Bishop Morrow School, Krishnagar
Class : Class 6
Ans: Orion is a constellation that resembles a hunter.

Ans 5:

Santina Suzanne from owis, bangalore
Class : Class 4
b

Ans 6:

Vartika kumar from D P S Newtown, Kolkata
Class : Class 9

Ans 7:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Yes , Ursa Major resembles the Great Bear , Leo ; lion ,Orion ; hunter and Scorpius; scorpion .

Post Your Answer

KRITHIGHA SHRI M P from KAMALA NIKETAN MONTESSORI SCHOOL, TRICHIRAPPALLI
Subject :NSO    Class : Class 6

Ans 1:

NORA SUSAN RIBU from PSBB, SIRUSERI
Class : Class 6

Ans 2:

Ayush Yadav from Salwan Public School, Gurgaon
Class : Class 6

Ans 3:

Sof Team from Sof Olympiad Trainer Helpdesk, Bangalore
Class : Class 7
i am inveitable

Ans 4:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
b

Ans 5:

arvin from KC INTERNATIONAL SCHOOL JAMMU, Jammu
Class : Class 7
C is correct

Ans 6:

Yashraj from pps, pune
Class : Class 6
the solution says c

Ans 7:

Piyush M from Somerville School, Delhi, Delhi
Class : Class 7

Ans 8:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 9:

malhar thorve from city internqtional school, satara road, pune
Class : Class 7
the observer cannot see S because Q is blocking the view and the observer cannot see R because of the opaque wall hence B is the correct answer

Ans 10:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 10

Ans 11:

Sucheta from Podar, Pune
Class : Class 8

Ans 12:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 7

Ans 13:

amogh from DELHI PUBLIC SCHOOL NOIDA, Ghaziabad
Class : Class 6
ANSWER IS B

Ans 14:

Yashraj Namdev Deshmukh from Sahyadri English School, Loha, Nanded
Class : Class 7
b

Ans 15:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8

Post Your Answer

Arnav Chavan from NHPS, Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Agrim Bhanote from Sacred Heart Sr. Sec. School , Ludhiana
Class : Class 4
D

Ans 2:

Agrim Bhanote from Sacred Heart Sr. Sec. School , Ludhiana
Class : Class 4
D

Ans 3:

RHETAMA DAS from Usha Martin school,Malda, MALDA
Class : Class 3

Ans 4:

Aviral Shukla from Apeejay School Sheikh Sarai, New Delhi
Class : Class 10
It is not a duck and his beak help him to catch fishes(fishes are first stored in its beak)

Post Your Answer

Archi Mangla from Mohters Global School, Dehi
Subject :NSO    Class : Class 7

Ans 1:

Medha Bhutani from Christ Academy, Bengaluru
Class : Class 9
Option A,because it is having the greatest number of bacteria in the shortest time.

Post Your Answer

Tanush Rao from Delhi Public School Vasant Kunj, Delhi
Subject :NSO    Class : Class 6

Post Your Answer