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Q57) Polyanion formation is maximum in ... [ CBSE PMT 1994]




SOLUTION

Due to greater tendency for catenation, sulphur shows property of poly-ionation to greater extent.
Answer: (c)


Q58) SO3 can be obtained by ... [ CBSE PMT 1994]




SOLUTION

Fe(SO4)3 → Fe2O3 + 3SO3
Answer: (d)


Q59) Sodium thiosulphate is prepared by ... [ IIT 1996]



SOLUTION

In alkaline medium it can be obtained by boiling sodium hydroxide solution with sulphure powder
12NaOH + S8 → 2Na2S2O3 + 4Na2S
Answer:(d)



Q60) What is the oxidation number of sulphur in Na2S4O6 ? [ AIIMS 1998]



SOLUTION


Answer: (d)


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