JEE Mains Model Paper 22

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Question : 44 of 90

Marks: +1, -0

Concentrated H2SO4 cannot be used to prepare HBr or HI from KBr or Kl because it:

Reacts too slowly with KBr or Kl
Reduces HBr or HI
Oxidises HBr or HI
Oxidises KBr to KBrO3 or Kl to KlO3

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