Aldehydes, Ketones & Acids · JEE Main previous year questions

2025 10 questions

1. Q662025 · 8 Apr 2025 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

2. Q572025 · 4 Apr 2025 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

3. Q612025 · 2 Apr 2025 · Shift 1
   
   1. A.Statement I is correct but Statement II is incorrect
   2. B.Both Statement I and Statement II are correct
   3. C.Both Statement I and Statement II are incorrect
   4. D.Statement I is incorrect but Statement II is correct
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   Answer: A

4. Q742025 · 29 Jan 2025 · Shift 2· Numerical answer

   In the Claisen-Schmidt reaction to prepare dibenzalacetone from 5.3 g of benzaldehyde, a total of 3.51 g of product was obtained. The percentage yield in this reaction was _______ %.

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   Answer: 60

5. Q612025 · 28 Jan 2025 · Shift 1

   Both acetaldehyde and acetone (individually) undergo which of the following reactions? A. Iodoform Reaction B. Cannizzaro Reaction C. Aldol Condensation D. Tollen's Test E. Clemmensen Reduction Choose the correct answer from the options given below:

   1. A.C and E Only
   2. B.A, B and D Only
   3. C.A, C and E Only
   4. D.B, C and D Only
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   Answer: C

6. Q742025 · 24 Jan 2025 · Shift 1· Numerical answer

   $\mathrm{Xg}$ of benzoic acid on reaction with aq $\mathrm{NaHC}{\mathrm{O}}_3$ released $\mathrm{C}{\mathrm{O}}_2$ that occupied $11.2\mathrm{L}$ volume at STP. $\mathrm{X}$ is ____ $\mathrm{g}$.

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   Answer: 61

7. Q672025 · 24 Jan 2025 · Shift 2
   
   1. A.(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
   2. B.(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
   3. C.(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
   4. D.(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
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   Answer: B

8. Q632025 · 23 Jan 2025 · Shift 2
   
   1. A.$\mathrm{PbC}{\mathrm{l}}_2$, $\mathrm{PbS}{\mathrm{O}}_4$, $\mathrm{PbCr}{\mathrm{O}}_4$
   2. B.$\mathrm{PbS}$, $\mathrm{PbS}{\mathrm{O}}_4$, $\mathrm{Pb}(\mathrm{C}{\mathrm{H}}_3\mathrm{COO}{)}_2$
   3. C.$\mathrm{PbS}$, $\mathrm{PbS}{\mathrm{O}}_4$, $\mathrm{PbCr}{\mathrm{O}}_4$
   4. D.$\mathrm{PbC}{\mathrm{l}}_2$, $\mathrm{Pb}(\mathrm{S}{\mathrm{O}}_4{)}_2$, $\mathrm{PbCr}{\mathrm{O}}_4$
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   Answer: C

9. Q702025 · 23 Jan 2025 · Shift 2
   
   1. A.Statement I is true but Statement II is false
   2. B.Both Statement I and Statement II are true
   3. C.Statement I is false but Statement II is true
   4. D.Both Statement I and Statement II are false
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   Answer: B

10. Q552025 · 22 Jan 2025 · Shift 1
    
    1. A.(A), (C) and (D) Only
    2. B.(A), (B) and (C) Only
    3. C.(A), (D) and (E) Only
    4. D.(C), (D) and (E) Only
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    Answer: D