Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS 2017
Exam
AIIMS
Year
2017
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

AIIMS 2017 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Which of the following oxoacids of phosphorus is a reducing agent...

Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?

Options

  1. AH4P2O5\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_5
  2. BHPO3\mathrm{HPO}_3
  3. CH3PO3\mathrm{H}_3 \mathrm{PO}_3
  4. DH3PO2\mathrm{H}_3 \mathrm{PO}_2

Correct answer

D. H3PO2\mathrm{H}_3 \mathrm{PO}_2

Step-by-step solution

Acids which contain P−H\mathrm{P}-\mathrm{H} bonds have strong reducing properties. Hypophosphorus acid (H3PO2)\left(\mathrm{H}_3 \mathrm{PO}_2\right) is a good reducing agent as it contains two P−H\mathrm{P}-\mathrm{H} bonds. It has one P−OH\mathrm{P}-\mathrm{OH} bond, so it is monobasic. Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?
Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

Identify the incorrect statement from the following : NEET 2026Given below are two statements: Statement-I : Heating NaCl with concentrated H _2 SO _4… NEET 2026Given below are two statements: Statement I : Like nitrogen that can form ammonia… NEET 2025Match List - I with List-II List-I List-II A. XeO_3 I. sp^3 d, linear B. XeF_2 II. sp^3… NEET 2025Among Group 16 elements, which one does NOT show -2 oxidation state? NEET 2024Identify the incorrect statement. NEET 2024The products A and B obtained in the following reactions, respectively, are aligned & 3… NEET 2024Given below are two statements: Statement I: The boiling point of hydrides of Group 16… NEET 2024 Full p Block Elements (Group 15, 16, 17 & 18) list All AIIMS PYQs