Q23 / 160 · TS EAMCET 2005 · Chemistry

Which of the following is not correct?

  • A
    Chlorophyll is responsible for the synthesis of carbohydrates in plants
  • B
    The compound formed in the addition of oxygen to haemoglobin is called oxyhaemoglobin
  • C
    Acetyl salicylic acid is known as aspirin
  • Correct answer
    D
    The metal ion present in vitamin $\mathrm{B}_{12}$ is $\mathrm{Mg}^{2+}$

Solution

Vitamin $B_{12}$ or cyanocobalamine contains cobalt and not magnesium.

Hence, the correct answer is option: 'D'.

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