Multiple choice

Amongst chlorophyll-a (C55H72O5N4Mg) and chlorophyll-b (C55H70O6N4Mg), which one has –CHO group and which has –CH3 group at C-3 position, respectively?

  1. CHO in Chl-a and CH3 in Chl-b

  2. Chl-a has both CHO and CH3 groups

  3. CH3 in Chl-a and CHO in Chl-b

  4. No CHO in Chl-b and CH3 in Chl-a
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both the chlorophylls have similar structures but they do differ in their compositions, which cause the adaptability in different scenarios. From the given formula, it can be estimated that Chl-a has two more H and an O less than Chl-b. Therefore, CHO is present in Chl-b.

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