National Science Olympiad Forum By SOF Olympiad Trainer - Page 130
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Pournami from Lexicon International School Wagholi, Pune
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

from ,
Class :
The correct answer is D.

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from ,
Subject :NSO    Class : Class 4

Ans 1:

from ,
Class :
option C

Ans 2:

Parmanyu from Learning paths school, Mohali
Class : Class 5
i found this answer effective.

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Nikhil Kocherry from Ryan International School, Mumbai
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

from ,
Class :
The correct answer is D.

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from ,
Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

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

Ans 3:

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 4:

from ,
Class :
thank u kind sir

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

Ans 1:

from ,
Class :
option D

Ans 2:

suresh kumar reddy Guddili from ,
Class : Class 4
A

Ans 3:

from ,
Class :
option B

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

Ans 1:

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

Ans 2:

from ,
Class :
option D

Ans 3:

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

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

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from ,
Subject :NSO    Class : Class 4

Ans 1:

Sherlock Holmes from Baker Street, London
Class : Class 9
My name is Dark Raider (a big surprise who I am. I can't reveal who I am) and all of you are wrong. Actually limestone and soda are melted in a furnace which is then cooled to make solid glass. And as for the number of states of matter, there are actually 4 states of matter.

Ans 2:

SRAVAN SHANKER from Bhavans Varuna Vidyalaya , Ernakulam
Class : Class 6
solid

Ans 3:

from ,
Class :
Liquid. Actually glass is not a solid but a super-cooled liquid. It is made by mixing limestone and soda ash.

Ans 4:

from ,
Class :
Harshkant You are right. Glass is a super cool liquid. there are actually 4 states of matter.

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Aritra Porey from DPS Bangalore North, Bengaluru
Subject :NSO    Class : Class 4

Ans 1:

Arka Chakraborty from St. Patrick's Academy, Bengaluru, Bengaluru
Class : Class 4
titanic

Ans 2:

Aritra Porey from DPS Bangalore North, Bengaluru
Class : Class 10
THE OASIS OF THE SEAS

Ans 3:

from ,
Class :
The Titanic is the biggest ship in the world.

Ans 4:

from ,
Class :
Titanic

Ans 5:

from ,
Class :
titanic

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from ,
Subject :NSO    Class : Class 4

Ans 1:

from ,
Class :
Hummingbird

Ans 2:

from ,
Class :
Hummingbird

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Nandana from St Thomas Residential School, Trivandrum
Class : Class 10
Hummingbird

Ans 4:

SRAVAN SHANKER from Bhavans Varuna Vidyalaya , Ernakulam
Class : Class 6
HUMMING BIRD IS THE ONLY BIRD WHICH CAN FLY BACKWARDS

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