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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

RiptideMel from Modern Vidya Niketan Senior Secondary School Sec 17, Faridabad
Class : Class 10
Microscope for cell/microorganism observation and magnifying glass for bigger objects

Ans 3:

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

Ans 4:

Chitu Protim Boruah from Indus Academy, Jagiroad
Class : Class 8
barometer

Ans 5:

Sumit from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 9
Electron Microscope

Ans 6:

binayak mohanta from st.paul's school,rourkela, Rourkela
Class : Class 8
compound microscope

Ans 7:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
IF IT IS SMALL THEN WE USE MICROSCOPE .WHEN IT IS VERY SMALL ORGANISM THEN WE USE ELECTRON MICROSCPOE

Ans 8:

Ronit Deshmukhya from U.P. Public School, Suri
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.

Ans 9:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
It is a microscope as microorganisms can be seen only through it.

Ans 10:

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

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

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

Ans 2:

Ananya from Delhi Public School, Meerut
Class : Class 7
As you see the chemical formula for water is H20, it contains molecules of hydrogen and oxygen

Ans 3:

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

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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 3:

Soundharya from ISWK, Muscat
Class : Class 8
Barometer

Ans 4:

Soundharya from ISWK, Muscat
Class : Class 8
microscope

Ans 5:

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 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 8

Ans 1:

Sumit from Dhanbad public school Hirak Branch, Dhanbad
Class : Class 9
Vaccum

Ans 2:

Aditya Prasad from Notre Dame , Gumla
Class : Class 9
Through solids since the atoms are closely packed in them.

Ans 3:

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

Ans 4:

binayak mohanta from st.paul's school,rourkela, Rourkela
Class : Class 8
vaccum

Ans 5:

Ronit Deshmukhya from U.P. Public School, Suri
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.

Ans 6:

Mayank Patel from Maharaja Agarsen Public School , Ghaziabad
Class : Class 8
VACCUM BUT LIGHT CAN

Ans 7:

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..

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 9

Ans 1:

keerthana from kakatiya high school, suryapet
Class : Class 9
Hydrogen,oxygen

Ans 2:

Vipup Sharma from HAPPY HOME PUBLIC SCHOOL SECTOR 11 ROHINI, New Delhi
Class : Class 10
HYDROGEN AND OXYGEN

Ans 3:

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

Ans 4:

Gh from Mahatma, Ghaziabad
Class : Class 10
Sodium carbonate probably

Ans 5:

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

Ans 6:

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

Ans 7:

abhinav from st. mary's school, dwarka, New Delhi
Class : Class 9
hydrogen and oxygen.

Ans 8:

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

Ans 9:

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

Ans 10:

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

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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 10

Ans 1:

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

Ans 2:

Aryan Sirohi from mount litera zee school, Bengaluru
Class : Class 4
larnyx

Ans 3:

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

Ans 4:

Nandana from St Thomas Residential School, Trivandrum
Class : Class 8
Larynx

Ans 5:

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 6:

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

Ans 7:

Vaidehi from Agragami Convent School.Wardha., wardha
Class : Class 10
LARYNX

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