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JEE Main 202116 MarchMorning Shift
Exam
JEE Main
Year
2021
Date
16 March
Shift
Morning Shift
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2021 · 16 March · Morning Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Match List-I with List-II List-I List-II Name of oxo acid Oxidation...

Match List-I with List-II

List-I List-II
Name of oxo acid Oxidation state of 'PP
(a) Hypophosphorous acid (i) +5+ 5
(b) Orthophosphoric acid (ii) +4+ 4
(c) Hypophosphoric acid (iii) +3+ 3
(d) Orthophosphorous acid (iv) +2+ 2
(v) +1+ 1

Choose the correct answer from the options given below :

Options

  1. A(a)−(v),(b)−(i),(c)−(ii),(d)−(iii)( a ) - ( v ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii )
  2. B(a)−(iv),(b)−(i),(c)−(ii),(d)−(iii)( a ) - ( iv ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii )
  3. C(a)−(iv),(b)−(v),(c)−(ii),(d)−(iii)( a ) - ( iv ) , ( b ) - ( v ) , ( c ) - ( ii ) , ( d ) - ( iii )
  4. D(a)−(v),(b)−(iv),(c)−(ii),(d)−(iii)( a ) - ( v ) , ( b ) - ( iv ) , ( c ) - ( ii ) , ( d ) - ( iii )

Correct answer

A. (a)−(v),(b)−(i),(c)−(ii),(d)−(iii)( a ) - ( v ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii )

Step-by-step solution

(a) Hypophosphorus acid : H3PO2{H}_{3} P {O}_{2}

\left(+ 1\right)3 + x + \left(- 2\right)2 = 0</p><p></p><p>x = + 1</p><p>(b)Orthophosphoricacid:</p><p>(b) Orthophosphoric acid :{H}_{3} P {O}_{4}</p><p>(+1)3+x+(−2)4=0</p><p>\left(+ 1\right)3 + x + \left(- 2\right)4 = 0

x=+5x = + 5

(c) Hypophosphoric acid : H4P2O6{H}_{4}{P}_{2}{O}_{6}

\left(+ 1\right)4 + 2x + \left(- 2\right)6 = 0</p><p></p><p>x = + 4</p><p>(d)Orthophosphorousacid:</p><p>(d) Orthophosphorous acid :{H}_{3} P {O}_{3}</p><p>(+1)3+x+(−2)3=0</p><p>\left(+ 1\right)3 + x + \left(- 2\right)3 = 0

x=+3x = + 3

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