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NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Analyzing +4 | -1
Assertion: H3PO2\mathrm{H}_3 \mathrm{PO}_2 can act as strong reducing agent and gives disproportionation reaction on heating.

Reason: Due to presence of one −OH-\mathrm{OH} group and two P−H\mathrm{P}-\mathrm{H} group, H3PO2\mathrm{H}_3 \mathrm{PO}_2 is a monobasic bronsted acid.
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Correct option: B
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
Option B is correct because both the Assertion and Reason are True, but the Reason is not a correct explanation of the Assertion. H3PO2\mathrm{H}_3 \mathrm{PO}_2 is a strong reducing agent and gives disproportionation on heating, and it is a monobasic bronsted acid due to one −OH-\mathrm{OH} group and two P−H\mathrm{P}-\mathrm{H} groups, but the reducing property is not *because* it's monobasic.

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