Verified Solution • 2025–26 Session moderate

QJEEM21Ch2091: JEE Main 2021 Chemistry - Class 11 JEEM21Ch2091 Solution: The set in which compounds have different nature is :

The set in which compounds have different nature is :

Multiple Choice Options

  • A B(OH)3 and H3PO3
  • B B(OH)3 and Al(OH)3
  • C NaOH and Ca(OH)2
  • D Be(OH)2 and Al(OH)3

Step-by-Step Verified Solution

(A) Both are acidic in nature.
B(OH)3 is orthoboric acid. It can accept a pair of electrons from Lewis bases and hence, act as Lewis acid.

H3PO3 is (phosphorus acid) diprotic acid as it readily ionises two protons.

(B) B(OH)3 is acidic and Al(OH)3 is amphoteric in nature.

(C) Both NaOH and Ca(OH)2 are basic hydroxides.

(D) Both Be(OH)2 and Al(OH)3 are amphoteric hydroxides.

Hence, only B(OH)3 and Al(OH)3 have different nature.

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