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The gas used in the manufacture of vanaspati from vegetable oil is

Answer» <html><body><p> hydrogen</p><br/><br/><p>Hydrogenation - to treat with hydrogen - is a chemical <a href="https://interviewquestions.tuteehub.com/tag/reaction-22747" style="font-weight:bold;" target="_blank" title="Click to know more about REACTION">REACTION</a> between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. The <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> is <a href="https://interviewquestions.tuteehub.com/tag/commonly-2530443" style="font-weight:bold;" target="_blank" title="Click to know more about COMMONLY">COMMONLY</a> employed to reduce or saturate organic compounds. The largest scale application of hydrogenation is for the <a href="https://interviewquestions.tuteehub.com/tag/processing-25579" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESSING">PROCESSING</a> of vegetable oils (fats to give margarine and related spreads and shortenings). Typical vegetable oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds). Their partial hydrogenation <a href="https://interviewquestions.tuteehub.com/tag/reduces-621012" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCES">REDUCES</a> most but not all, of these carbon-carbon double bonds. Hydrogenation converts liquid vegetable oils into solid or semi-solid fats, such as those present in margarine.</p></body></html>


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