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from ,
Subject :NSO    Class : Class 8

Ans 1:

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

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Class :
compound microscope

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

Ans 4:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Microscope

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

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from ,
Class :
barometer

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Class :
Electron Microscope

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

Ans 9:

Anu Sharma from DPS Noida, Noida
Class : Class 2
A Barometer

Ans 10:

ashhad from sri chaitanya techno school, Bengaluru
Class : Class 8
barrometer

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from ,
Subject :NSO    Class : Class 7

Ans 1:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Sodium Carbonate

Ans 2:

Anu Sharma from DPS Noida, Noida
Class : Class 2
hydrogen and oxygen

Ans 3:

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

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from ,
Subject :NSO    Class : Class 5

Ans 1:

Ujjwal Upadhyay from Navy Children school, Vasco
Class : Class 6
Guys! Are you crazy? microscope is used to see microorganisms.barometer is used to measure the amount of rain.

Ans 2:

Soundharya from ISWK, Muscat
Class : Class 8
Barometer

Ans 3:

UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Class : Class 8
dipleidoscope

Ans 4:

Ujjwal Upadhyay from Navy Children school, Vasco
Class : Class 6
Guys! Are you crazy? microscope is used to see microorganisms. The answer is weather camera.

Ans 5:

mitra from dav model school, Durgapur
Class : Class 5
Microscope or barameter!? Who knows??!! I think it is microscope

Ans 6:

Soundharya from ISWK, Muscat
Class : Class 8
microscope

Ans 7:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Microscope

Ans 8:

Anu Sharma from DPS Noida, Noida
Class : Class 2
A Barometer

Ans 9:

RITAJA MISHRA from DPS NORTH KOLKATA, Kolkata
Class : Class 8
A barometer.

Ans 10:

Seenu Vasan from chinmaya vidyalaya, nagapattinam
Class : Class 5
microscope

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from ,
Subject :NSO    Class : Class 8

Ans 1:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Water

Ans 2:

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

Ans 3:

Tejan Gandhi from Chanderbala Modi Academy, Ankleshwar
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 :
Vaccum

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from ,
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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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from ,
Class :
VACCUM BUT LIGHT CAN

Ans 7:

Khavya from Sindhi Model School, Chennai
Class : Class 8
vacuum

Ans 8:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Vacuum

Ans 9:

vikram Aditya from new era high school , patna
Class : Class 8
Vacuum

Ans 10:

vikram Aditya from new era high school , patna
Class : Class 8
Air

Ans 11:

from ,
Class :
vaccum

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from ,
Subject :NSO    Class : Class 9

Ans 1:

from ,
Class :
HYDROGEN AND OXYGEN

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from ,
Class :
Sodium carbonate probably

Ans 3:

Namanjain5589@Gmail.com from Yugantar Public School , Rajnandgaon
Class : Class 9
Hydrogen and Oxygen H2O

Ans 4:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Sodium Carbonate

Ans 5:

Wyesvatha.J from Geethaanjali All India Senior Secondary School, Erode
Class : Class 10
sodium carbonate

Ans 6:

Nimesh from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 10
Hydrogen & Oxygen

Ans 7:

from ,
Class :
Hydrogen,oxygen

Ans 8:

Anu Sharma from DPS Noida, Noida
Class : Class 2
hydrogen and oxygen

Ans 9:

Sarthak Praveen Modhe from St. Thomas Convent Sr. Sec. School, Bhopal
Class : Class 9
yes it is hydrogen and oxygen

Ans 10:

from ,
Class :
hydrogen and oxygen.

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from ,
Subject :NSO    Class : Class 10

Ans 1:

Manasi Gupta from Delhi Public School,Durg, Durg
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 2:

anjali1508in@gmail.com from little angels school pilibhit, pilibhit
Class : Class 8
Larynx

Ans 3:

Manasi Gupta from Delhi Public School,Durg, Durg
Class : Class 10

Ans 4:

Anu Sharma from DPS Noida, Noida
Class : Class 2
Larynx

Ans 5:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 10
Larynx

Ans 6:

from ,
Class :
larnyx

Ans 7:

from ,
Class :
LARYNX

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