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JIPMER2004Chemistryp Block Elements (Group 15, 16, 17 & 18)

Which of the following acids is monobasic?

Options

  1. AH ₃ PO ₃
  2. BH ₃ PO ₂
  3. CH ₂ SO ₃
  4. DH ₃ PO ₄

Correct answer

B. H ₃ PO ₂

Step-by-step solution

H ₃ PO ₂ (hypophosphorus acid) is a monobasic acid. It gives only one type of salt e.g., NaH ₂ PO ₂ .

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