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प्रश्न
In oxy-acetylene flame for welding and cutting of metals, a mixture of ____________ is used.
विकल्प
hydrogen and acetylene
oxygen and ethene
oxygen and acetylene
hydrogen and ethene
MCQ
रिक्त स्थान भरें
उत्तर
In oxy-acetylene flame for welding and cutting of metals, a mixture of oxygen and acetylene is used.
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Alkynes
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