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

User Forum

Ask Your Question
SAUGATA SAHA from ,
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
The pencil looks bent because of the phenomenon called Refraction. When light enters water it cannot move as fast as it does in the air. As the light enters the water on an angle it does not follow its original path, and this makes the image look bend.

Post Your Answer

kaithabjeetsingh@gmail.com from the shri ram school aravali, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

Taksh from St John High School, Mumbai
Class : Class 8
Ans a

Ans 2:

thechampiondaksh from K R Mangalam World School, New Delhi
Class : Class 8
the answer is c according to me as convex mirror always forms diminished , erect and virtual image

Post Your Answer

TEJAS SHENDE from kendriya Vidyalaya IIT Mumbai, Mumbai
Subject :NSO    Class : Class 7

Ans 1:

parijatsomani from The Global Edge School, Hyderabad
Class : Class 7
they are asking what is incorrect

Ans 2:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
as u are correct that pumule form the shoot of plant but in some cases it is future root like in some plants radicle decay due to some disease so pumule grows as root . So here right option will be "c"

Post Your Answer

Chandan NS from DPS NORTH, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
Answer is option C. Both Radio and Television can be used to get updates because they support audio.

Ans 2:

Praveen Tiwari from St Joseph high school, Maharajganj
Class : Class 9
Maharajganj

Post Your Answer

Chandan NS from DPS NORTH, Bengaluru
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
Tailor bird. It makes its nest with the leaves sewn to gether.

Post Your Answer

Apurv Yadnopavit from Hutchings high school talegaon pune, Pune
Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : To maintain soil fertility, it is essential to prevent overgrazing and deforestation.
Statement 2 : Roots of plants grasp soil well and prevent removal of top soil by air, water, etc.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


Please see to it that you may have typed the word "fertility" instead on the word "erosion". Soil grasping has nothing to do with soil fertility.

Ans 1:

Shriram dindore from KVS 9BRD AFS PUNE, PUNE
Class : Class 8

Ans 2:

Shriram dindore from KVS 9BRD AFS PUNE, PUNE
Class : Class 8

Post Your Answer

gourinandana from delhi public school gbn, Noida
Subject :NSO    Class : Class 8

Ans 1:

Dr Anupa Ghosh from ,
Class : Class 8
The correct answer is crop rotation(C).

Post Your Answer

OM KANADE from Euro School, Bengaluru
Subject :NSO    Class : Class 8

Ans 1:

Aakarshak Swaraj from Podar international school , Surat , Surat
Class : Class 7
please explain the answer of this question

Post Your Answer

Soham De from DPS, Nerul, Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Madhurya Ahuja from The Modern School , NCR
Class : Class 4
Tricky

Ans 2:

sri from meridian, kalyan
Class : Class 4
K.V.S. Srivanshitha from meridian school class:class 4tricy ans- C

Ans 3:

nitin loya from prabhat kids, Akola
Class : Class 4
very hard -ans A

Ans 4:

nitin loya from prabhat kids, Akola
Class : Class 4
tricky

Post Your Answer

Rajani Prabhakaran from ,
Subject :NSO    Class : Class 6

Ans 1:

Neehar D.S.V from Sri Chaitanya Techno School, Bengaluru
Class : Class 7
1 and 4 are correct

Post Your Answer