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Biomolecules Chemistry - Biomolecules

Bihar Board (BSEB) - STD 12 Science - Chemistry (BSEB - English Medium). 64 questions in this chapter.

Question types

Biomolecules question types

64 questions across 6 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

64
Questions
6
Question groups
5
Question types
Sample Questions

Biomolecules questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 3M.C.Q [1M]1 Mark
A vitamin which plays a vital role in the coagulating property of blood is :
  • A
    Vitamin A
  • B
    Vitamin D
  • C
    Vitamin E
  • ✓
    Vitamin K

Answer: D.

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Q 4M.C.Q [1M]1 Mark
The helical structure of protein is stabilized by which of the following?
  • A
    Ionic bond
  • B
    Covalent bond
  • C
    Vander Waals forces
  • ✓
    Hydrogen bond

Answer: D.

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Q 5M.C.Q [1M]1 Mark
In reaction $OHCH _2-( CHOH )_4- CHO \xrightarrow{ HI , \Delta} $ .........
  • A
    Fructose
  • ✓
    n-hexane
  • C
    Gluconic acid
  • D
    None of these

Answer: B.

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Q 61 Marks Question1 Mark
(i) Write one reaction of D-glucose which cannot be explained by its open chain structure.
(ii) What type of linkage is present in nucleic acids?
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Q 163 Marks Question3 Marks
Give the plausible explanation for the following :
(a) Glucose does not give 2,4-DNP test.
(b) The two strands in DNA are not identical but are complementary.
(c) Starch and cellulose both contain glucose unit as monomer, yet they are structurally different.
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Q 173 Marks Question3 Marks
(a) Write the product when D-glucose reacts with conc. $HNO_3$.
(b) Amino acids show amphoteric behaviour. Why?
(c) Write one difference between $\alpha$-helix and $\beta$-pleated structures of proteins.
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