National Science Olympiad Forum By SOF Olympiad Trainer - Page 33
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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B


Ans 2:

suhana priyadarsini nayak from VELS GLOBAL SCHOOL, Bengaluru
Class : Class 5
Answer b will be the correct answer as mosquito is not a social insect while others are termite is not useful insect and honey bee is a useful insect

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ISHAN DAS from DELHI PUBLIC SCHOOL , ANGUL
Subject :NSO    Class : Class 4

Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
THE ANSWER C

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SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Subject :NSO    Class : Class 4

Ans 1:

Bushra aslam from uttam, Ghaziabad
Class : Class 8
Admin is correct.I know that!

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Q is an animal that lays eggs and has 4-stages in its life-cycle. Q could be butterfly or mosquito. They lay eggs, and their life-cycle has 4-stages – egg, larva, pupa and adult. The pupa stage is the non-feeding stage.


Ans 3:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Ans 1:

AARNAV SINGH from Prudence school Ashok vihar Delhi, Delhi
Class : Class 3
WHY OPTION A NOT?

Ans 2:

Aaryav Misra from Vibgyor High, Bengaluru
Class : Class 4
Why not C?

Ans 3:

Aaryav Misra from Vibgyor High, Bengaluru
Class : Class 4
Sorry, meant why not A

Ans 4:

Overtaker from Blore, Blore
Class : Class 4
B

Ans 5: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Biodegradable household wastes increase soil fertility.


Ans 6:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Ans 1:

AAGNEY GOYAL from VENKATESHWAR INTERNATIONAL SCHOOL, Delhi
Class : Class 4

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Surface Y is shiny, so it may act like a mirror.


Ans 3:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

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Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Subject :NSO    Class : Class 4

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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Length of the day depends on the speed of rotation of a planet on its axis. The more is the speed the shorter is the length of the day.


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Naavya Kapoor from St Gregorios High school , Mumbai
Subject :NSO    Class : Class 4

A factory was set up in an area which used to discharge its untreated waste down the pipe into nearby water body. After few years the factory was shut down due to some legal action. The given graph shows the changes in the populations of two organisms X and Y over time, before the setting of factory and after it was shut down. Identify X and Y and select the correct option.


A X could be bacteria and Y could be fish.
B X could be prawn and Y and could be a submerged aquatic plant.
C X could be a water bird and Y could be algae.
D X could be algae and Y could be bacteria.


Ans 1:

SAPTARSHI SAHA from Hemsheela Model School, Durgapur
Class : Class 8

Ans 2:

Hamzah Inamdar from SHARDA ENGLISH SCHOOL KAIJ DIST BEED, KAIJ
Class : Class 4

Ans 3:

Kanishka malik from Uttam school for girls, Ghaziabad
Class : Class 4
Please explain

Ans 4:

Shreshta from Presidium, Ghaziabad
Class : Class 3
A

Ans 5:

Shreshta from Presidium, Ghaziabad
Class : Class 3
A

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 8
The correct answer is A

Ans 7:

Sargun Maini from The Khaitan School, NOIDA
Class : Class 6

Ans 8: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


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SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Subject :NSO    Class : Class 4

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SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Subject :NSO    Class : Class 4

Ans 1:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
they have not given the diagram only

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