National Science Olympiad Forum By SOF Olympiad Trainer - Page 790
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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
Sublimation

Ans 2:

UVAIS ZUFAR from DON BOSCO SCHOOL OF EXCELLENCE, Chennai
Class : Class 8
Deposition is a thermodynamic process, a phase transition in which gas transforms into solid. The reverse of deposition is sublimation. One example of deposition is the process by which, in sub-freezing air, water vapor changes directly to ice without first becoming a liquid.

Ans 3:

Soundharya from ISWK, Muscat
Class : Class 8
Sublimation

Ans 4:

Anu Sharma from DPS Noida, Noida
Class : Class 2
A change of state from Solid to gas without changing to liquid state is called Sub Limation.

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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 5:

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

Ans 6:

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 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:

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

Ans 9:

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

Ans 10:

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

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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
Sodium Carbonate

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
hydrogen and oxygen

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

Ans 1:

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

Ans 2:

Soundharya from ISWK, Muscat
Class : Class 8
Barometer

Ans 3:

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

Ans 4:

Soundharya from ISWK, Muscat
Class : Class 8
microscope

Ans 5:

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

Ans 6:

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

Ans 7:

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 8:

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

Ans 9:

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

Ans 10:

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.

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

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:

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 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

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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:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

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