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Subject :NSO    Class : Class 8
in which metal sound can travel the fastest?

Ans 1:

Class : Class 8
Aluminium

Ans 2:

Class : Class 9
Steel is an alloy....and he asked metal. I guess the answer is Aluminium.

Ans 3:

Class : Class 9
Aluminium i.e. 6420m/s

Ans 4:

Class : Class 8
STEEL

Ans 5:

Class : Class 8
iron or steel

Ans 6:

Class : Class 8
in the hardest metal Chromium

Ans 7:

Class : Class 9
in diamond

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