Q.(i) Syn gas is a mixture of
(A) CO + H2 (B) CO2 + H2
(C) CO + N2 (D) CO2 + N2
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Start your 14-day free trial to unlock the full solution →Three quick recall facts from the Hydrogen chapter: the composition of syn gas, the hard-vs-soft water distinction, and why hydrogen peroxide needs special storage.
(i) Syn gas (synthesis gas), used industrially (e.g., in the water-gas shift process and for methanol/Fischer-Tropsch synthesis), is a mixture of carbon monoxide and hydrogen, CO + H2. So the correct option is (A).
(ii) Hard water contains appreciable amounts of dissolved calcium and magnesium salts (bicarbonates, chlorides, sulphates). These react with soap (sodium/potassium salts of fatty acids) to form insoluble calcium/magnesium soap precipitates (scum) instead of lather, so hard water does not lather easily/needs more soap. Soft water is largely free of these dissolved Ca2+/Mg2+ salts, so soap dissolves in it easily and produces lather readily.
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