National Science Olympiad Forum By SOF Olympiad Trainer - Page 764
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Kohil from Kendriya Vidyalaya, Patna
Subject :NSO    Class : Class 8

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DIBYA PRASANNA RANA from DAV Public School, Haldia
Subject :NSO    Class : Class 7

Ans 1:

Saniya Wasnik from Chanda Public School, Chandrapur
Class : Class 8
Its answer is D.It is very simple we have to use 'BODMAS RULE' :)

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Anchita from Euroschool Wakad, Pune
Subject :NSO    Class : Class 4

Read the following statements made by two students.
Shuchi : There are three stages in its life cycle. The young one is very similar to its parent. It is P.
Ritu : There are four stages in its life cycle. The young one is very different from its parent. It is Q.
Identify the correct option with regard to P and Q.

----------P-------------------Q
A Housefly --------Cockroach
B Butterfly --------Grasshopper
C Cockroach ------Housefly
D Cockroach ------Grasshopper


please explain

Ans 1:

Parth from St Stephens School, Chandigarh
Class : Class 5
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)

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

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Dhruv from na, Udaipur
Subject :NSO    Class : Class 6

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Dhruv from na, Udaipur
Subject :NSO    Class : Class 6

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sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
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:

ABHAY AGARWAL from ,
Class : Class 3
thank u kind sir

Ans 4:

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.

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dhruv nigam from ckc jhansi, Jhansi
Subject :NSO    Class : Class 7

Ans 1:

from , Mumbai
Class : Class 7

Ans 2:

Archi Mangla from Mohters Global School, Dehi
Class : Class 7
B MUST BE THE ANSWER

Ans 3:

Aditya kumar from Sapphire International School, Noida
Class : Class 8
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:

Reetam Dan from Delhi Public School Sector 19 Faridabad Haryana india, Faridabad
Class : Class 9

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

Ans 1:

sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Class : Class 5
option B

Ans 2:

suresh kumar reddy Guddili from ,
Class : Class 4
A

Ans 3:

Parth from St Stephens School, Chandigarh
Class : Class 5
option D

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

Ans 1:

sai ramakrishna GUDIMETLA  from AMM MATRICULATION HIGHER SECONDARY SCHOOL, Chennai
Class : Class 5
option D

Ans 2:

Prisha from Podar International School Thane, Thane
Class : Class 5
Option (D) because land cools faster than the sea.

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