To weld metals together, high temperature required such a high temperature is obtained by burning
A. acetylene in oxygen
B. LPG in oxygen
C. methane in oxygen
D. acetylene in nitrogen
Answer: Option A
A. acetylene in oxygen
B. LPG in oxygen
C. methane in oxygen
D. acetylene in nitrogen
Answer: Option A
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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