The gases used in different types of welding would include

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The gases used in different types of welding would include



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1) Who suggested that most of the mass of the atom is located in the nucleus?

2) The two elements that are frequently used for making transistors are

3) Among the various allotropes of carbon,

4) The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

5) Which of the following is used as a moderator in nuclear reactor?

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