Verified Solution • 2025–26 Session
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QJEEM23Che4b6: JEE Main 2023 Chemistry - Class 12 JEEM23Che4b6 Solution: The mismatched combinations are A. Chlorophyll - Co B. Water…
The mismatched combinations are
A. Chlorophyll - Co
B. Water hardness - EDTA
C. Photography
D. Wilkinson catalyst
E. Chelating ligand - D-Penicillamine
Choose the correct answer from the options given below :
Multiple Choice Options
- A A and E Only
- B D and E Only
- C A and C Only
- D A, C, and E Only
Step-by-Step Verified Solution
Let's analyze each combination :
A. Chlorophyll - Co : Mismatched. Chlorophyll has a magnesium (Mg) ion at its center, not cobalt (Co).
B. Water hardness - EDTA : Correct match. EDTA (ethylenediaminetetraacetic acid) is used to treat water hardness by chelating metal ions like Ca²⁺ and Mg²⁺.
C. Photography - [Ag(CN)₂]⁻ : Mismatched. Silver halides (AgX, where X = Cl, Br, I) are used in photography, not [Ag(CN)₂]⁻.
D. Wilkinson catalyst - [(Ph₃P)₃RhCl] : Correct match. Wilkinson's catalyst is a homogeneous hydrogenation catalyst with the formula [(Ph₃P)₃RhCl].
E. Chelating ligand - D-Penicillamine : Correct match. D-Penicillamine is a chelating agent that can bind to metal ions through multiple coordination sites.
The mismatched combinations are A and C. So, the correct answer is :
A and C Only.
A. Chlorophyll - Co : Mismatched. Chlorophyll has a magnesium (Mg) ion at its center, not cobalt (Co).
B. Water hardness - EDTA : Correct match. EDTA (ethylenediaminetetraacetic acid) is used to treat water hardness by chelating metal ions like Ca²⁺ and Mg²⁺.
C. Photography - [Ag(CN)₂]⁻ : Mismatched. Silver halides (AgX, where X = Cl, Br, I) are used in photography, not [Ag(CN)₂]⁻.
D. Wilkinson catalyst - [(Ph₃P)₃RhCl] : Correct match. Wilkinson's catalyst is a homogeneous hydrogenation catalyst with the formula [(Ph₃P)₃RhCl].
E. Chelating ligand - D-Penicillamine : Correct match. D-Penicillamine is a chelating agent that can bind to metal ions through multiple coordination sites.
The mismatched combinations are A and C. So, the correct answer is :
A and C Only.