National Science Olympiad Forum By SOF Olympiad Trainer - Page 885
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from ,
Subject :NSO    Class : Class 4

Ans 1:

from ,
Class :
thank u kind sir

Ans 2:

Admin from Revisewise, Noida
Class : Class 3
Answer: B

II and IV

Solution:
As per the equation of photosynthesis -X is carbon dioxide, Y is chlorophyll and Z is oxygen.
I is incorrect because carbon dioxide constitutes only 0.04% of atmosphere and III is incorrect because oxygen gas does not turn lime water milky.

Ans 3:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6
Thanx sir

Ans 4:

PRANSHU AGRAWAL from The Jain International School, Bilaspur
Class : Class 6
thanks sir

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from ,
Subject :NSO    Class : Class 7

Ans 1:

from ,
Class :

Ans 2:

from ,
Class :

Ans 3:

from ,
Class :
Its "b" as in parachutes all the angles formed by ropes are equal and mid rope is connected to the center of it. So here is no center and angle is not equal

Ans 4:

from ,
Class :
B MUST BE THE ANSWER

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Aarush from Podar, Mumbai
Subject :NSO    Class : Class 4

Ans 1:

from ,
Class :
option B

Ans 2:

from ,
Class :
option D

Ans 3:

suresh kumar reddy Guddili from ,
Class : Class 4
A

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Aarush from Podar, Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Pratham Jain from SERI International School, Pune
Class : Class 6
c

Ans 2:

from ,
Class :
Option (D) because land cools faster than the sea.

Ans 3:

from ,
Class :
option D

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Aarush from Podar, Mumbai
Subject :NSO    Class : Class 4

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Subpotent Ermine from Sharada Mandir School, Goa
Subject :NSO    Class : Class 6

Ans 1:

Arav Gupta from St Stephens School, Chandigarh
Class : Class 4
yes

Ans 2:

Shweta Garg from Vibgyor high, Vadodara
Class : Class 8
this is a wrong question (approved by NASA)

Ans 3:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8
i think this is wrong

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Mohamed Raahil from NMEIS, Riyadh
Subject :NSO    Class : Class 3

Ans 1:

Devang Sharma from Modern school, Kota
Class : Class 8
flowers turn into fruit

Ans 2:

Sreenath from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 5

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Aditya Pradhan from SAI INTERNATIONAL SCHOOL, Bhubaneswar
Subject :NSO    Class : Class 5

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Ammu from kkm, Trivandrum
Subject :NSO    Class : Class 3

Ans 1:

Admin from Revisewise, Noida
Class : Class 3
The hardest substance found in our body is Enamel so X is Enamel. The pulp in our teeth is soft and bears blood vessels and nerves so Y is Pulp.

Ans 2:

Admin from Revisewise, Noida
Class : Class 3
The hardest substance in our body is Enamel, so X is Enamel. The Pulp in our teethis soft and bears blood vessels and nerves, so Y is Pulp. Hence the answer is B.

Ans 3:

Dr Indu V Raj from Nirmala Matha Central School Eastfort, Thrissur, Thrissur
Class : Class 3
Pulp cavity

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Ammu from kkm, Trivandrum
Subject :NSO    Class : Class 3

Ans 1:

Admin from Revisewise, Noida
Class : Class 3
Answer: B

there was a mistake in the answer, it has been corrected.

Solution:
Natural environment encompasses all living and non living things occurring naturally.

Ans 2:

Baban from dps, kolkata
Class : Class 4

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