National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
NaOH

Ans 2:

Class : Class 10
NaOH

Ans 3:

Class : Class 7
NAOH is the answer.

Ans 4:

Class : Class 9
NaOh

Ans 5:

Class : Class 8
NaOH

Ans 6:

Class : Class 8
The molecular formula for sodium hydroxide is NaOH

Ans 7:

Class : Class 7
NaOh

Ans 8:

Class : Class 8
NaOH

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
The full form of IAU is International Association of Universities

Ans 2:

Class : Class 4
The full of IAU is International Astronomical Union.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
a relationship in which two organism live together and take benefit of each other

Ans 2:

Class : Class 8
Symbiotic relationship is the process where organism help each other.They cannot live without each other

Ans 3:

Class : Class 7
A relationship in which two plants help each other to survive.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Tigers are becoming extinct due to poaching and disturbing their natural habitat

Ans 2:

Class : Class 5
Because they are hunted by hunters for food and other purposes

Ans 3:

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 4:

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 5:

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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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Butterflies have the taste sensor on their feet.Thus they suck nectar through their feet.

Ans 2:

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:

Class : Class 5
Butterflies suck nectar using their tube like mouth.

Ans 4:

Class : Class 6
butterflies suck nectar with the help of proboscis

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Subject :NSO    Class : Class 5

Ans 1:

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.

Ans 2:

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.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
NOMADS ARE THOSE PEOPLE WHO MOVE FROM ONE PLACE TO ANOTHER AND DO NOT HAVE A PERMANENT HOUSE

Ans 2:

Class : Class 6
early man are called nomads i.e move from one place to another.

Ans 3:

Class : Class 8
Nomads are people who live in hilly and mountain regions.

Ans 4:

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:

Class : Class 5
People who do not have houses, they roam around on place and another.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Aluminium

Ans 2:

Class : Class 9
Aluminium i.e. 6420m/s

Ans 3:

Class : Class 9
Steel is an alloy....and he asked metal. I guess the answer is Aluminium.

Ans 4:

Class : Class 9
in diamond

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Class : Class 8
iron or steel

Ans 6:

Class : Class 8
in the hardest metal Chromium

Ans 7:

Class : Class 8
STEEL

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
thermal conduction was originally called as diffusion

Ans 2:

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

Ans 3:

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.

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 6
Because varnish paints are immixable with water but it is mixable with turpentine oil.

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