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JEE Advanced 2019Paper 1
Exam
JEE Advanced
Year
2019
Paper
Paper 1
Subject
Chemistry
Chapter
Biomolecules

JEE Advanced 2019 · Paper 1 · Chemistry · Biomolecules

Which of the following statement(s) is(are) true?

Which of the following statement(s) is(are) true?

Options

  1. AOxidation of glucose with bromine water gives glutamic acid
  2. BThe two six-membered cyclic hemiacetal forms of D−(+)−D - \left(+\right) - glucose are called anomers
  3. CHydrolysis of sucrose gives dextrorotatory glucose and levorotatory fructose
  4. DMonosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones

Correct answer

B. The two six-membered cyclic hemiacetal forms of D−(+)−D - \left(+\right) - glucose are called anomers

Step-by-step solution

→\to Glucose →[0]Br2-H2O\overset{{\text{Br}}_{\text{2}}{\text{-H}}_{\text{2}}\text{O}}{\mathop{\to}_{[ \text{0} ]}} Glycolic acid
→∝−Δ−\to ∝ - \Delta - Glucose and \beta−D\text{\beta} - \text{D} Glucose
→\to Hydrolysis of sucrose given dextrorotatory glucose and levorotatory fructose,
→\to Monosaccharide cannot be hydrolyzed to give polyhydroxy aldehyde and ketones.
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