Which of the following combination is used for metal welding? i. Oxygen and Ethyne ii. Hydrogen and Ethyne iii. Hydrogen and Oxygen iv. Ethyne, Hydrogen and Oxygen

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Which of the following combination is used for metal welding? i. Oxygen and Ethyne ...

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Which of the following combination is used for metal welding?
i. Oxygen and Ethyne
ii. Hydrogen and Ethyne
iii. Hydrogen and Oxygen
iv. Ethyne, Hydrogen and Oxygen

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A I and ii
B Iii and iv
C I and iii
D Ii and iv

Correct Answer: Option D

Explanation:

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Which of the following combination is used for metal welding? i. Oxygen and Ethyne ...

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