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Shweta Basu from Amity international School, Gurgaon
Subject :NSO    Class : Class 8
Sound cannot travel through__.

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

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

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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 11:

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

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