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A flame which is used for welding consists of two components X and Y which can produce a temperature about $2800 ° C$ . Whereas when component Y is replaced with Z, that flame can produce a temperature about $3300 ° C$ . Then identify X, Y and Z respectively.

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Hydrogen, Oxygen, Acetylene

Acetylene, Oxygen, Hydrogen

Oxygen, Hydrogen, Acetylene

Oxygen, Acetylene, Hydrogen

answer is B.

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Detailed Solution

X & Y gives the 2800°C temperature.

X is Acetylene, Y is Oxygen. If Y is replaced with Hydrogen gives the 3300°C because hydrogen gas has more calorific value.

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