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JEE Main 202120 JulyMorning Shift

Exam: JEE Main
Year: 2021
Date: 20 July
Shift: Morning Shift
Subject: Chemistry
Chapter: Classification of Elements and Periodicity in Properties

JEE Main 2021 · 20 July · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties

The set in which compounds have different nature is:

The set in which compounds have different nature is:

Options

A $B ( OH{)}_{3}$ and ${H}_{3}{PO}_{3}$
B $B ( OH{)}_{3}$ and $Al ( OH{)}_{3}$
C $NaOH$ and $Ca ( OH{)}_{2}$
D $Be ( OH{)}_{2}$ and $Al ( OH{)}_{3}$

Correct answer

B. $B ( OH{)}_{3}$ and $Al ( OH{)}_{3}$

Step-by-step solution

1)

B ( OH{)}_{3}

acidic and

{H}_{3}{PO}_{3}

acidic
2)

B ( OH{)}_{3}

acidic and

Al ( OH{)}_{3}

amphoteric
3)

NaOH

basic and

Ca ( OH{)}_{2}

basic
4)

Be ( OH{)}_{2}

amphoteric and

Al ( OH{)}_{3}

amphoteric

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