National Science Olympiad Forum By SOF Olympiad Trainer - Page 837
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Roma singh from RBK Global School, Maharashtra
Subject :NSO    Class : Class 7

Ans 1:

Ananya from Delhi Public School, Meerut
Class : Class 7
A relationship in which two plants help each other to survive.

Ans 2:

Manas Malla from Visakha Valley School, Visakhapatnam
Class : Class 8
Symbiotic relationship is the process where organism help each other.They cannot live without each other

Ans 3:

gaurang gupta from mount litra zee school, uttar pradesh
Class : Class 8
a relationship in which two organism live together and take benefit of each other

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UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Amitesh from Delhi Public School Greater Noida, Noida
Class : Class 7
Tigers are becoming extinct due to poaching and we are disturbing their natural habitat.Tigers are also a very endangered species of animal.They are commonly found in India,China and Bhutan.

Ans 2:

Daksh Rajesh Lolienkar from Doha Modern Indian School, Doah Qatar
Class : Class 5
Tigers are becoming extinct due to poaching and disturbing their natural habitat

Ans 3:

Soundharya from ISWK, Muscat
Class : Class 8
We humans destroy the habitat of tiger and poachers hunt them for their skin,nail and teeth.This is the reason for tiger becoming extinct.

Ans 4:

monishajv2006@gmail.com from manan vidya, Ranchi
Class : Class 5
Because they are hunted by hunters for food and other purposes

Ans 5:

Amitesh from Delhi Public School Greater Noida, Noida
Class : Class 7
Tigers are becoming extinct as poachers are hunting them and when we cut down forests their natural habitat are also becoming less.They need a vast area to hunt.

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UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Tanvi Ritisha Dash from delhi public school bangalore east, Bengaluru
Class : Class 6
butterflies suck nectar with the help of proboscis

Ans 2:

praveen prabhu from private international english school, abudhabi
Class : Class 5
It is called a proboscis and is a long flexible tube like straw that is the butterfly's tongue. The butterfly uses the proboscis to drink nectar and when it is not in use it curls back into a spiral.

Ans 3:

monishajv2006@gmail.com from manan vidya, Ranchi
Class : Class 5
Butterflies suck nectar using their tube like mouth.

Ans 4:

Soundharya from ISWK, Muscat
Class : Class 8
Butterflies have the taste sensor on their feet.Thus they suck nectar through their feet.

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UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Jairaj Singh Basur from Vivek High School, Chandigarh
Class : Class 8
Echolocation is to use the echo( vibrations of sound bounced off by objects ) to locate certain items. Bats use echolocation to travel.

Ans 2:

ratankrmandal@yahoo.com from Vivekananda Mission School, Haldia
Class : Class 7
Echolocation is the using of echo to locate object or find a prey.Animals like Bat sends vibrations that bounce off from the body of their prey.Then they with the help the vibrations they can locate food easily.

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UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Subject :NSO    Class : Class 5

Ans 1:

Meowness from Why should I tell?, Wow
Class : Class 5
People who do not have houses, they roam around on place and another.

Ans 2:

Ananya from Vibgyor High, Bengaluru
Class : Class 6
early man are called nomads i.e move from one place to another.

Ans 3:

Tanvi Ritisha Dash from delhi public school bangalore east, Bengaluru
Class : Class 6
NOMADS ARE THOSE PEOPLE WHO MOVE FROM ONE PLACE TO ANOTHER AND DO NOT HAVE A PERMANENT HOUSE

Ans 4:

RITAJA MISHRA from DPS NORTH KOLKATA, Kolkata
Class : Class 8
When early human beings noticed that they are not getting sufficient amount of food to survive, they started moving from one place to another in search of food and shelter and they were called nomads.

Ans 5:

Soundharya from ISWK, Muscat
Class : Class 8
Nomads are people who live in hilly and mountain regions.

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Mohit from Carmel High school Gadchiroli , Gadchiroli
Subject :NSO    Class : Class 8

Ans 1:

swayam agrawal from Udgam school for children, Ahmedabad
Class : Class 8
iron or steel

Ans 2:

Avi from Delhi Public School Vadodara, Vadodara
Class : Class 9
in diamond

Ans 3:

Nirdesh Prajapati from K V No. 3, Jaipur
Class : Class 8
in the hardest metal Chromium

Ans 4:

Aishwarya Dwivedi from St. John's School, Marhauli, Varanasi
Class : Class 9
Steel is an alloy....and he asked metal. I guess the answer is Aluminium.

Ans 5:

Sumit from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 9
Aluminium i.e. 6420m/s

Ans 6:

Anidroid ,Aniruddha from Modern DPS, Faridabad
Class : Class 8
Aluminium

Ans 7:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
STEEL

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Daksh Rajesh Lolienkar from Doha Modern Indian School, Doah Qatar
Subject :NSO    Class : Class 5

Ans 1:

Ananya from Vibgyor High, Bengaluru
Class : Class 6
thermal conduction was originally called as diffusion

Ans 2:

UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Class : Class 8
conduction -the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts. diffusion -a reflection or refraction of light or other electromagnetic radiation from an irregular surface or an erratic dispersion through a surface; scattering.

Ans 3:

Soundharya from ISWK, Muscat
Class : Class 8
The transfer of heat from one substance to another by direct contact is called conduction or diffusion.

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from ,
Subject :NSO    Class : Class 5

Ans 1:

yadav1972namita@gmail.com from MANAV RACHNA INTERNATIONAL SCHOOL CHARMWOOD FARIDABAD HARYANA, New Delhi
Class : Class 6
Because varnish paints are immixable with water but it is mixable with turpentine oil.

Ans 2:

UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Class : Class 8
Turpentine is used by the painter for thinning oil colors and for making ... irritations on their hands after contact with even small amounts of turpentine. ... use of turpentine to remove oil paint

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Amitesh from Delhi Public School Greater Noida, Noida
Subject :NSO    Class : Class 5

Ans 1:

UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Class : Class 8
The American astronomer Edwin Hubble made the observations in 1925 and was the first to prove that the universe is expanding. He proved that there is a direct relationship between the speeds of distant galaxies and their distances from Earth. This is now known as Hubble's Law.

Ans 2:

Anshuman pathak from DPS NOIDA, Noida
Class : Class 5
Humble law

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PUSHKAR from DAV PUBLIC SCHOOL, Gaya
Subject :NSO    Class : Class 3

Ans 1:

Anish Chawla from Cambridge Co-ed School, Jalandhar
Class : Class 3
Rhopalocera or Lepidoptera

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