Carbohydrates MCQ basic level

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Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th..

Q1. Glucose when heated with in presence of dry HCl gas gives α and β-methyl glucosides because it contains:
  •  An aldehyde group
  •  A-CH2OH group
  •  A ring structure
  •  Five hydroxyl groups
Five hydroxyl groups

Q2. Hydrolysis of sucrose is called:
  •  Esterification
  •  Saponification
  •  Inversion
  •  Hydration

Q3.   Sugar can be tested in urine by:
  •   Molish test
  •  Dunstan's test
  •  Benedict's test
  •  Legal's test
Legal's test

Q4. Malt sugar on hydrolysis yields:
  •  Glucose and maltose
  •  Glucose and fructose
  •  Glucose and lactose
  •  Glucose only
Glucose only

Q5. Which of the following statements about ribose is incorrect ?
  •  It is a polyhydroxy compound
  •  It is an aldehyde sugar
  •  It has six carbon atoms
  •  It exhibits optical activity
It is a polyhydroxy compound 

Q6. On complete hydrolysis of starch, we finally get:
  •  Glucose
  •  Fructose
  • Glucose and fructose
  •  Sucrose

Q7. Maltose contains how many oxygen atoms:
  •  6
  •  10
  •  11
  •  22

Q8. The correct name of ‘sucrose' is:
  •  α-D-glucopyranosyl-β-D-fructofuranoside
  •  Tβ-D-glucopyranosyl-β-D-fructofuranoside
  •  α-D-glucopyranosyl-α-D-fructofuranoside
  •  β-D-glucopyranosyl-α-L-fructofuranoside

Q9.Sucrose is:
  •  Laevorotatory
  •  Dextrorotatory
  •  Racemic mixture
  •  Optically inactive
Optically inactive

Q10. The hydrolysis of sucrose produces a mixture which is:
  •  Laevorotatory
  •  Dextrorotatory
  •  Equally both (+) and (–) rotatory
  • Optically inactive

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