MCQ
Which of the following statements about ribose is incorrect
  • A
    It is a polyhydroxy compound
  • B
    It is an aldehyde sugar
  • It has six carbon atoms
  • D
    It exhibits optical activity

Answer

Correct option: C.
It has six carbon atoms
c
$Hint:$ A carbohydrate is a polyhydroxy aldehyde or ketone.

$Explanation- $Ribose is a monosaccharide having five carbons, thus called pentose sugar. Ribose is the most important pentose present in living organisms. It is an aldose sugar, having an aldehydic functional group. Its molecular formula is represented as $C_5​ H_{10}​ O_5$ . The structural formula of ribose is as follow:

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