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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
IF IT IS SMALL THEN WE USE MICROSCOPE .WHEN IT IS VERY SMALL ORGANISM THEN WE USE ELECTRON MICROSCPOE

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Class : Class 8
barrometer

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Class : Class 9
Electron Microscope

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Class : Class 8
If it is small to see , we can use magnifying glass but if it is micro organism , we can see only through a microscope.

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Class : Class 2
Microscope

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Class : Class 8
compound microscope

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Class : Class 8
barometer

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Class : Class 2
A Barometer

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Class : Class 8
It is a microscope as microorganisms can be seen only through it.

Ans 10:

Class : Class 10
Microscope for cell/microorganism observation and magnifying glass for bigger objects

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
As you see the chemical formula for water is H20, it contains molecules of hydrogen and oxygen

Ans 2:

Class : Class 2
Sodium Carbonate

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Class : Class 2
hydrogen and oxygen

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 2
Microscope

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Class : Class 6
Guys! Are you crazy? microscope is used to see microorganisms. The answer is weather camera.

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Class : Class 8
Barometer

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Class : Class 6
Guys! Are you crazy? microscope is used to see microorganisms.barometer is used to measure the amount of rain.

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Class : Class 5
Microscope or barameter!? Who knows??!! I think it is microscope

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Class : Class 8
A barometer.

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Class : Class 2
A Barometer

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Class : Class 8
microscope

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Class : Class 8
dipleidoscope

Ans 10:

Class : Class 5
microscope

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
In solids, especially when atoms are closely packed, metals.. Sound does travel in water and air with slow speed 1000, 300 m/s respectively whereas in metals with 3000 m/s.. And sound doesn't travel in vaccum at all..

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Class : Class 8
vacuum

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Class : Class 2
Water

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Class : Class 9
Vaccum

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Class : Class 8
vaccum

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Class : Class 2
Vacuum

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Class : Class 8
Vacuum

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Class : Class 8
VACCUM BUT LIGHT CAN

Ans 9:

Class : Class 9
Through solids since the atoms are closely packed in them.

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Class : Class 8
Air

Ans 11:

Class : Class 8
First of all , many have answered it vaccum but it is absolutely wrong because sound can not travel in vaccum and most probably the correct answer will be solid.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
hydrogen and oxygen.

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Class : Class 10
Hydrogen & Oxygen

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Class : Class 10
HYDROGEN AND OXYGEN

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Class : Class 2
hydrogen and oxygen

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Class : Class 2
Sodium Carbonate

Ans 6:

Class : Class 9
yes it is hydrogen and oxygen

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Class : Class 9
Hydrogen and Oxygen H2O

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Class : Class 9
Hydrogen,oxygen

Ans 9:

Class : Class 10
Sodium carbonate probably

Ans 10:

Class : Class 10
sodium carbonate

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10

Ans 2:

Class : Class 10
LARYNX

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Class : Class 8
Larynx

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Class : Class 4
larnyx

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Class : Class 2
Larynx

Ans 6:

Class : Class 10
Larynx. It is a tube about 2 inches (5cm) long in adults. It sits above the windpipe (trachea) in the neck and in front of the food pipe. The food pipe in the upper part of the neck is called the pharynx.

Ans 7:

Class : Class 8
Larynx

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