Choose whether the given statement is true/false:

Oxy-hydrogen flame is used for welding and cutting metals.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- Hydrogen and oxygen gases are combined to form oxy-hydrogen. This concoction is also referred to as "Knall-gas." Either combustion or electrolysis are used to make it.
Since both gases, hydrogen and oxygen, are flammable, combustion increases. Hydrogen gas burns easily in oxygen or air along with the formation of water. The flame produced is neutral and increases the temperature. The flame has a temperature of around 2800 degrees Celsius. At this temperature, the metal tends to melt very easily. Therefore, it is generally used for metal cutting and melting.
Therefore, the given statement is true.
Hence, option 1 correct.

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