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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Redox Reactions

NTA Abhyas 2020 · Chemistry · Redox Reactions

Match the compounds given in column I with oxidation states of...

Match the compounds given in column I with oxidation states of carbon given in column II and mark the appropriate choice.

Column I Column II
(p) C6H12O6{C}_{6}{H}_{12}{O}_{6} (i) +3
(q) CHCl3CHC{l}_{3} (ii) -3
(r) CH3CH3C{H}_{3}C{H}_{3} (iii) +2
(s) (COOH)2( COOH{)}_{2} (iv) 0

Options

  1. A(p)-(iv), (q)-(iii), (r)-(ii), (s)-(i)
  2. B(p)-(i), (q)-(ii), (r)-(iii), (s)-(iv)
  3. C(p)-(ii), (q)-(iii), (r)-(iv), (s)-(i)
  4. D(p)-(iii), (q)-(ii), (r)-(i), (s)-(iv)

Correct answer

A. (p)-(iv), (q)-(iii), (r)-(ii), (s)-(i)

Step-by-step solution

C6H12O6:6x+12+(−12)=0{C}_{6}{H}_{12}{O}_{6}: 6x + 12 + \left(- 12\right) = 0

x=0x = 0

CHCl3:x+1+(−3)=0CHC{l}_{3}: x + 1 + \left(- 3\right) = 0

x=+2x = + 2

CH3CH3:x+3+x+3=0C{H}_{3}C{H}_{3}: x + 3 + x + 3 = 0

x=−3x = - 3

(COOH)2:x+x+(−4×2)+(+2)=0( COOH{)}_{2}: x + x + \left(- 4 \times 2\right) + \left(+ 2\right) = 0

x=+3x = + 3
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