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

User Forum

Ask Your Question
Kushagra Gupta from Primus Public School, Bengaluru
Subject :NSO    Class : Class 5

Mr. Gupta was walking along a street at night. He stood at point D and observed that his shadow was cast behind him. He then noticed that the length of his shadow changed as he walked towards the street lamp.

Which one of the following graphs shows the correct changes in the length of the shadow as Mr. Gupta walked from Point D to Point F?

A
B
C
D


B is the wrong answer. Shouldn't the actual answer be A, as the closer the object is to the light source, more area is blocked and the shadow is bigger?

Ans 1:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 6
Can you please explain

Ans 2:

Omar Faruq Molla from ITL Public School, Delhi
Class : Class 4

Ans 3:

Sarthak yadav from RPS, mahendergarh
Class : Class 6

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 5
the question which of the following CANNOT spread through the mode ................................ given figure

Ans 2:

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

Ans 3:

Adyanika Satpathy from DPS International School, Singapore
Class : Class 5
B is the ANSWER!!!!!!!!

Ans 4:

NEHA JAIN from K.R manglam world school, ghaziabad
Class : Class 5
B SHOULD BE THE ANSWER

Ans 5:

Adyanika Satpathy from DPS International School, Singapore
Class : Class 5
Thanks for supporting B everyone Ummm..... Whoever u guys are : ) !!

Ans 6:

Adyanika Satpathy from DPS International School, Singapore
Class : Class 5
B is the ANSWER!!!!!!!!! 😡 🤬

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :NSO    Class : Class 5

Ans 1:

Nihaar from Kendriya Vidyalaya Malleshwaram , Bengaluru
Class : Class 7
can any one explane this

Ans 2:

from Yuvabharathi International School, Singapore
Class : Class 7

Ans 3:

Anita from DPS, Xxx
Class : Class 7

Ans 4:

from Yuvabharathi International School, Singapore
Class : Class 7

Ans 5:

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

Ans 6:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 5

Ans 7:

from Yuvabharathi International School, Singapore
Class : Class 7

Ans 8:

from Yuvabharathi International School, Singapore
Class : Class 7

Ans 9:

from Yuvabharathi International School, Singapore
Class : Class 7

Ans 10:

KOUSTUV JENA from RYAN INTERNATIONAL SCHOOL, RAIPUR
Class : Class 6

Ans 11:

Srinik Mandal from Delhi Public School Ruby Park, Kolkata
Class : Class 5
Ans is c

Post Your Answer

naman from dpsnoida, Noida
Subject :NSO    Class : Class 4

Ans 1:

DHEER PANDEY from Cornerstone School, Hyderabad
Class : Class 6
maybe the answer is d

Ans 2:

Aarnav Grover from Calorx olive international school, Ahmedabad
Class : Class 4

Ans 3:

Riya from Bhavan Vidyalaya, Chandigarh
Class : Class 4
the correct answer should be C

Ans 4:

Aarnav Grover from Calorx olive international school, Ahmedabad
Class : Class 4
answer should be c and d the engine is wrong

Ans 5:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
My answer is c. In position 3 northern hemisphere is exposed to the sun.

Ans 6:

Samyaraj Chowdhury from Indus Valley World School, Kolkata
Class : Class 5

Ans 7:

Daksha Neill from Somerville school, Delhi
Class : Class 4

Ans 8:

Bidyashree Panda from Royal Concord International School Begur, Bangalore
Class : Class 4
the answer should be c.

Ans 9:

Daksha Neill from Somerville school, Delhi
Class : Class 4
Answer c is correct.

Ans 10:

BV Karthikeya from Sentia, Hyderabad
Class : Class 5
ans should be c

Ans 11:

purnendu from national centre for excellence jbn, bangalore
Class : Class 6
can someone explain this question

Ans 12:

Ishita from vivekanand school, New Delhi
Class : Class 4
the answer is b

Ans 13:

Manya Pujar from EuroSchool, Davangere
Class : Class 6
can some one explain

Ans 14:

Shweta Garg from apeejay school noida, Ghaziabad
Class : Class 3
the correct answer should be both c and d

Post Your Answer

Srikrish Subramanian from Hindu SSS, Chennai
Subject :NSO    Class : Class 6

Two bar magnets suspended by string, are separated by a piece of metal. Which of the following statements best explain the outcome shown in the diagram?


A Only like poles attract.
B The magnets have lost their magnetic forces.
C The metal exerts a magnetic field which attracts the magnets.
D The magnetic field of the magnets cannot pass through the metal.


If the magnetic field can't pass through the metal why are the magnets attached to the metal

Ans 1:

Priyam Bhattacharya from cambridge court high school, jaipur
Class : Class 6
mukli

Ans 2:

Tamrashi Pani from SOF Olympiad Trainer international school , Bangalore is a good city
Class : Class 6

Ans 3:

tanay Nasikkar from bgs nps, bangalore
Class : Class 7

Ans 4:

Anmol kathar from deogiri global academy, aurangabad
Class : Class 7
magnetic field can pass through metal. but her is such condition where metal is magnetic so it attract both magnet

Ans 5:

from ,
Class : Class 8
The metal is a magnetic material and like poles repel each other, so there is no conclusion about magnetic field passing through the metal

Ans 6:

MUKIL from SRDF VIVEKANANDA VIDYALAYA, CHENNAI
Class : Class 6
correct answer=c

Post Your Answer

Vania Aravindan from Unicent School , Miyapur Hyderabad
Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

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

Post Your Answer

KISHORE KUMAR E from MAHARISHI INTERNATIONAL RESIDENTIAL SCHOOL, SUNGUVARCHATHIRAM
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

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

Ans 2:

Sarthak Gupta from Delhi Public School Sector 12 R K PURAM, NewDelhi
Class : Class 8
It should be A

Ans 3:

geet_adi from SSRVM, Bengaluru
Class : Class 5
How it should be option a

Post Your Answer

Subash kandoth from New horizon public school , Navi Mumbai
Subject :NSO    Class : Class 8

Ans 1:

ketaki kul from sanskriti school, Pune
Class : Class 10
ans is C. in first row the head count (from right to left ) is 1+1=2, in second row the head count (from right to left ) is 2+1=3,hence in the third row the head count will be 0+2=2, hence the answer is C.

Ans 2:

Subash kandoth from New horizon public school , Navi Mumbai
Class : Class 10
Please explain it

Post Your Answer

RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad
Subject :NSO    Class : Class 9

Ans 1:

Shalin Jain from NKDAV Sidheegram, Sidheegram
Class : Class 9
Option D because Kinetic energy means work done. Therefore, it can be said that work is done on body or can be said mass. W = F*D(Force * Displacement). Therefore it is independent of mass.

Post Your Answer

ANANYA.KUMAR from DPS Noida, Noida
Subject :NSO    Class : Class 5

Ans 1:

Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara
Class : Class 7
Sun 's surface is about 6000 degrees celcius and blue star is 28000 degrees celcius so to find the answer 28000 -6000 which equals to 22000degrees celcius is blue star hotter than Sun .

Post Your Answer