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Bennedict’s reagent test is conducted to confirm the presence of
Options
(a) polysachharides like starch
(b) lipids
(c) reducing sugars
(d) proteins
Correct Answer:
reducing sugars
Explanation:
All those sugars which have free aldehyde or ketone group are called reducing sugars. These are able to reduce cupric ions (Cu⁺²) into cuprous ions (Cu⁺). The two common test are Benedict’s test and Fehling’s test. Both tests employ alkaline solution of copper sulphate which is blue in colour with reducing sugar it gives orange to brick red precipitation. Galactose is a reducing sugar. It gives brownish red precipitate wiht Fehling reagent and wiht Benedict’s reagent it gives yellow, red or green precipitate confirming the presence of sugar. Sucrose, starch are non-reducing sugars.
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Topics: Cell Structure and Functions
(413)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Aphrodite,commonly called as sea mouse belongs to phylum
- Gonorrhoea is caused by
- Who discovered the cell (actually the cell wall) in section of cork?
- Secretions of ductless glands are known as
- The ovule curvature is more pronounced and embryo sac become horse shoe shaped
Topics: Cell Structure and Functions (413)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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