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 Multiple Choice QuestionsMultiple Choice Questions

281.

The absolute configuration of

is:

  • (2S, 3R)

  • (2S, 3S)

  • (2R, 3R)

  • (2R, 3R)

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282.

Which of the vitamins given below is water soluble?

  • Vitamin C

  • Vitamin D

  • Vitamin E

  • Vitamin E

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283.

Which one of the following bases is not present in DNA?

  • Quinoline

  • Adenine

  • Cytosine

  • Cytosine

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284.

Synthesis of each molecule of glucose in photosynthesis involves

  • 18 molecules of ATP

  • 10 molecules of ATP

  • 8 molecules of ATP

  • 8 molecules of ATP

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285.

Which of the following compounds can be detected by Molisch’s test?

  • Nitro compounds

  • Sugars

  • Amines

  • Amines

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286.

The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA.

  • 1st

  • 2nd

  • 3rd

  • 3rd

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287.

Biuret test is not given by 

  • proteins

  • carbohydrates

  • polypeptides

  • polypeptides


B.

carbohydrates

Biuret test is given by the compounds having peptide bond which is not present in carbohydrate.  Biuret Test produces violet colour on addition of dilute  CuSO4 to an alkaline solution of a compound containing peptide linkage.

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288.

Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution?

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289.

The two functional groups present in a typical carbohydrate are

  • -OH and -COOH

  • -CHO and -COOH

  • >C = O and - OH

  • >C = O and - OH

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290.

α-D-(+)-glucose and β-D-(+)-glucose are

  • conformers

  • epimers

  • anomers

  • anomers

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