National Science Olympiad Forum By SOF Olympiad Trainer - Page 771
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Dhruv from Springdales, Dubai
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
To allow better ventilation.

Ans 2:

Kaustubh rao from Alpha wisdom vidyashram, Trichy
Class : Class 5
The answer is D

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Prajjit Gon from Basava International School, New Delhi
Subject :NSO    Class : Class 7

Ans 1:

Vedant Pungliya from ,
Class : Class 7
c

Ans 2:

Senthil Kumar from ARB INTERNATIONAL SCHOOL, Coimbatore
Class : Class 7
ANSWER IS C

Ans 3:

amit kumar basistha from anundoram borooah academy, pathsala
Class : Class 7
D

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Amanjeet Singh from ,
Subject :NSO    Class : Class 5

Ans 1:

Gauri Chaturvedi from St. Joseph Convent, Jabalpur
Class : Class 6
Answer is B

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ASHNA JAIN from inventure ACADEMY, Bengaluru
Subject :NSO    Class : Class 6

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Prajjit Gon from Basava International School, New Delhi
Subject :NSO    Class : Class 7

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ASHNA JAIN from inventure ACADEMY, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Anmol kathar from deogiri global academy, aurangabad
Class : Class 10
the correct option is D and i have written D then also they had given me wrong and they had telling the answer B.

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

Ans 1:

Rayhan Khan from Sister Nivedita School, Hyderabad
Class : Class 7
Why is it A?

Ans 2:

tashu gupta from Shanti Asiatic , jaipur
Class : Class 7
WHY NOT A

Ans 3:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10

Ans 4:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 5:

aritroray from Chirec International School, Hyderabad
Class : Class 8
It should be A

Ans 6:

GAUTHAM GOPINATH from BPDAV School, HYDERABAD
Class : Class 10
I think that the answer is A.Could someone explain why it is B?

Ans 7: (Master Answer)

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

Ans 8:

Supratim Biswas from DPS RUBY PARK KOLKATA, kolkata
Class : Class 5

Ans 9:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
How

Ans 10:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Class : Class 10

Ans 11:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
why not A

Ans 12:

Anubhab Maity from Dps ruby park, Kolkata
Class : Class 7

Ans 13:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Class : Class 10

Ans 14:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9
I agree with you Anushree because the same thing is given in our science textbook also

Ans 15:

Sargah Surya from bgsnps, Bengaluru
Class : Class 4
Black radiates and absorbs heat faster. Confirmation is their in almost all science tb and google too. So answer must be A. WHY NOT A

Ans 16:

Rudra Patil from Podar International School, Aurangabad C.B.S.E, Aurangabad
Class : Class 4
Please Explain why is the answer (B)

Ans 17:

Sargah Surya from bgsnps, Bengaluru
Class : Class 4
how is the answerB. according to my science text book ( New science ahead class 7, pg.47), Black not only absorbs heat fast,but also radiates heat fast and cools down faster, accordingto that,answermust be A.

Ans 18:

Archit Santosh Darakh from Podar International School , Aurangabad
Class : Class 9

Ans 19:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9
Why

Ans 20:

Sradha Ratheesh from MGM central Public School, Trivandrum
Class : Class 8
It's A right?

Ans 21:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
B IS GIVEN HERE IN NSO TEST.

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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.

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

Ans 1:

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

Ans 2:

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

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

Ans 1:

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"

Ans 2:

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

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