Biomolecules MCQs Mock Test of Class 12th Chemistry

Welcome to your Biomolecules MCQs Mock Test of Class 12th Chemistry

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Question 1. Which compound can exist in a dipolar (zwitter ion) structure?
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Question 2. Which of the following is an acidic amino acid?
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Question 3. The melting points of amino acids are higher than the corresponding hal-acids because
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Question 4. Most common types of secondary structures of proteins are
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Question 5. Mark the incorrect example
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Question 6. During acetylation of glucose it needs ,v moles of.acetic anhydride. The value of x would be
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Question 7. On oxidation with a mild oxidising agent like Br2/H20, the glucose is oxidized to
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Question 8. Invert sugar is
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Question 9. Which of the following compounds is found abundatly in nature?
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Question 10. Glycosidic linkage is an
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Question 11. Starch is composed of two polysaccharides which arc
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Question 12. Which reagent is used to convert glucose into saccharic acid?
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Question 13. Maltose is made up of
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Question 14. What is the basic formulae for starch?
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Question 15. Whicn of the following is an example of an aldopentose?
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Question 16. Which of the following treatment will convert starch directly into glucose?
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Question 17. The general formula of carbohydrates is
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Question 18. The a-and p-forms of glucose are
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Question 19. The conversion of maltose into glucose is possible by the enzyme
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Question 20. Which of the following is a non-reducing sugar?
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Question 21. Which one of the following is not correct?
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Question 22. In cellulose, D-glucose units are joined by
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Question 23. The anomeric carbon in D (+) glucose is
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Question 24. How many C-atoms are there is a pyranose ring?
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Question 25. Cellulose is a
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Question 26. Amino acids generally exist in the form of Z witter ions. This means they contain
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Question 27. Globular proteins are present in
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Question 28. The letter ‘D’ in carbohydrates signifies
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Question 29. A diabetic person carries a packet of glucose with him always, because
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Question 30. Among the naturally occurring carbohydrates, furanose ring is found in the
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Question 31. Which one of the amino acids can be synthesised in the body?
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Question 32. Which of the following is not true about amino acids?
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Question 33. A compound which contains both ………… and ………… is called amino acid. The amino acids is polypeptide chain are joined by ………/ bonds.
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Question 34. Denaturation of protein leads to loss of its biological activity by
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Question 35. Proteins are condensation polymers of
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Question 36. Mark the wrong statement about denaturation of proteins
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Question 37. In fibrous proteins, polypeptide chains are held together
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Question 38. Which type of interactions are responsible for making the a-helix structure stable?
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Question 39. Secondary structure of protein refers to
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Question 40. What are the hydrolysis products of sucrose?
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Question 41. Carbohydrates are stored in human body as the polysaccharide
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Question 42. The glycosidic linkage involved in linking the glucose units in amylose part of starch is
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Question 43. Which of the following B group vitamins can be stored in our body?
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Question 44. Which of the following bases is not present in DNA?
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Question 45. Which of the following reactions of glucose can be explained only by its cyclic structure?
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Question 46. Glycogen is a branched chain polymer of α-D-glucose units in which chain is formed by C1—C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to _____________________ .
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Question 47. Which of the following polymer is stored in the liver of animals?
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Question 48. Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives
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Question 49. Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by:
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Question 50. Which of the following acids is a vitamin?

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