Which of the following combination of gases is ... - JAMB Chemistry 1992 Question
Which of the following combination of gases is used for metal welding? i. Oxygen and ethyne, ii. Hydrogen and ethyne, iii. Hydrogen and oxygen, iv. Ethyne, hydrogen and oxygen.
A
i and ii
B
ii and iv
C
i and iii
D
ii and iv
correct option: a
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