Biomolecules · JEE Main previous year questions

2024 16 questions

1. Q822024 · 9 Apr 2024 · Shift 1· Numerical answer

   Total number of essential amino acid among the given list of amino acids is ________. Arginine, Phenylalanine, Aspartic acid, Cysteine, Histidine, Valine, Proline

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   Answer: 4

2. Q772024 · 9 Apr 2024 · Shift 2

   The incorrect statement about Glucose is :

   1. A.Glucose remains in multiple isomeric form in its aqueous solution
   2. B.Glucose is soluble in water because of having aldehyde functional group
   3. C.Glucose is an aldohexose
   4. D.Glucose is one of the monomer unit in sucrose
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   Answer: B

3. Q612024 · 8 Apr 2024 · Shift 1

   Combustion of glucose (${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$) produces ${\text{CO}}_2$ and water. The amount of oxygen (in g) required for the complete combustion of $900\text{ g}$ of glucose is : [Molar mass of glucose in ${\text{g mol}}^{-1}=180$]

   1. A.$32$
   2. B.$480$
   3. C.$800$
   4. D.$960$
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   Answer: D

4. Q812024 · 8 Apr 2024 · Shift 2· Numerical answer

   ${\Delta }_{\text{vap}}{\mathrm{H}}^{\ominus }$ for water is $+40.79{\text{ kJ mol}}^{-1}$ at $1\text{ bar}$ and $100^{\circ }\mathrm{C}$. Change in internal energy for this vapourisation under same condition is ______ ${\text{kJ mol}}^{-1}$. (Integer answer) (Given $\mathrm{R}=8.3{\text{ JK}}^{-1}{\text{ mol}}^{-1}$)

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   Answer: 38

5. Q842024 · 8 Apr 2024 · Shift 2· Numerical answer

   The total number of carbon atoms present in tyrosine, an amino acid, is ________.

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   Answer: 9

6. Q762024 · 6 Apr 2024 · Shift 2

   The incorrect statements regarding enzymes are : (A) Enzymes are biocatalysts. (B) Enzymes are non-specific and can catalyse different kinds of reactions. (C) Most Enzymes are globular proteins. (D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose. Choose the correct answer from the option given below :

   1. A.(B) and (D)
   2. B.(A), (B) and (C)
   3. C.(B) and (C)
   4. D.(B), (C) and (D)
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   Answer: A

7. Q692024 · 4 Apr 2024 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: D

8. Q622024 · 4 Apr 2024 · Shift 2

   Match List I with List II \begin{tabular}{|l|l|l|l|} \hline & \textbf{LIST I} & & \textbf{LIST II} \\ \hline A. & $\alpha$ - Glucose and $\alpha$ - Galactose & I. & Functional isomers \\ B. & $\alpha$ - Glucose and $\beta$ - Glucose & II. & Homologous \\ C. & $\alpha$ - Glucose and $\alpha$ - Fructose & III. & Anomers \\ D. & $\alpha$ - Glucose and $\alpha$ - Ribose & IV. & Epimers \\ \hline \end{tabular} Choose the correct answer from the options given below:

   1. A.A-III, B-IV, C-II, D-I
   2. B.A-IV, B-III, C-I, D-II
   3. C.A-III, B-IV, C-I, D-II
   4. D.A-IV, B-III, C-II, D-I
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   Answer: B

9. Q762024 · 1 Feb 2024 · Shift 1

   If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is :

   1. A.CATTAGCT
   2. B.TACGAAGT
   3. C.ATGCGACT
   4. D.GTACTTAC
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   Answer: B

10. Q812024 · 1 Feb 2024 · Shift 2· Numerical answer

    The number of tripeptides formed by three different amino acids using each amino acid once is ______.

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    Answer: 6

11. Q612024 · 31 Jan 2024 · Shift 1

    Match List I with List II $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ \text{(A)}& \text{Glucose}/\mathrm{NaHC}{\mathrm{O}}_3/\Delta & \text{(I)}& \text{Gluconic acid}\\ \text{(B)}& \text{Glucose}/\mathrm{HN}{\mathrm{O}}_3& \text{(II)}& \text{No reaction}\\ \text{(C)}& \text{Glucose}/\mathrm{HI}/\Delta & \text{(III)}& \text{n-hexane}\\ \text{(D)}& \text{Glucose/Bromine water}& \text{(IV)}& \text{Saccharic acid}\end{array}$$ Choose the correct answer from the options given below:

    1. A.A-II, B-IV, C-III, D-I
    2. B.A-III, B-II, C-I, D-IV
    3. C.A-IV, B-I, C-III, D-II
    4. D.A-I, B-IV, C-III, D-II
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    Answer: A

12. Q812024 · 31 Jan 2024 · Shift 2· Numerical answer

    From the vitamins $\mathrm{A},{\mathrm{B}}_1,{\mathrm{B}}_6,{\mathrm{B}}_{12},\mathrm{C},\mathrm{D},\mathrm{E}$ and $\mathrm{K}$, the number of vitamins that can be stored in our body is ____.

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    Answer: 5

13. Q692024 · 29 Jan 2024 · Shift 1

    Type of amino acids obtained by hydrolysis of proteins is :

    1. A.$\gamma$
    2. B.$\beta$
    3. C.$\alpha$
    4. D.$\delta$
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    Answer: C

14. Q722024 · 29 Jan 2024 · Shift 1

    Match List I with List II | | List - I (Substances) | | List - II (Element Present) | |---|---|---|---| | (A) | Ziegler catalyst | (I) | Rhodium | | (B) | Blood Pigment | (II) | Cobalt | | (C) | Wilkinson catalyst | (III) | Iron | | (D) | Vitamin ${\mathrm{B}}_{12}$ | (IV) | Titanium | Choose the correct answer from the options given below:

    1. A.A-IV, B-III, C-I, D-II
    2. B.A-II, B-IV, C-I, D-III
    3. C.A-III, B-II, C-IV, D-I
    4. D.A-II, B-III, C-IV, D-I
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    Answer: A

15. Q622024 · 29 Jan 2024 · Shift 2

    Match List I with List II | | List - I (Bio Polymer) | | List - II (Monomer) | |---|---|---|---| | (A) | Starch | (I) | nucleotide | | (B) | Cellulose | (II) | $\alpha$-glucose | | (C) | Nucleic acid | (III) | $\beta$-glucose | | (D) | Protein | (IV) | $\alpha$-amino acid | Choose the correct answer from the options given below:

    1. A.A-IV, B-II, C-I, D-III
    2. B.A-I, B-III, C-IV, D-II
    3. C.A-II, B-I, C-III, D-IV
    4. D.A-II, B-III, C-I, D-IV
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    Answer: D

16. Q662024 · 27 Jan 2024 · Shift 2

    Which structure of protein remains intact after coagulation of egg white on boiling?

    1. A.Quaternary
    2. B.Primary
    3. C.Secondary
    4. D.Tertiary
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    Answer: B