Organic Reactions & Conversions — JEE Main Previous Year Questions · PaperYodha

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Organic Reactions & Conversions · JEE Main previous year questions

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2025 17 questions

Q672025 · 8 Apr 2025 · Shift 2
1. A. $C l_{2} / anhy. AlC l_{3}; B r_{2} /Fe; alc. KOH$
2. B. $C l_{2} /Fe; B r_{2} / anhy. AlC l_{3}; aq. KOH$
3. C. $B r_{2} /Fe; C l_{2}, Δ; alc. KOH$
4. D. $B r_{2} / anhy. AlC l_{3}; C l_{2}, Δ; aq. KOH$
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Answer: C
Q522025 · 4 Apr 2025 · Shift 1
1. A.
2. B.
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4. D.
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Answer: B
Q622025 · 4 Apr 2025 · Shift 1
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4. D.
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Answer: B
Q662025 · 4 Apr 2025 · Shift 2
1. A.
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4. D.
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Answer: A
Q572025 · 3 Apr 2025 · Shift 1
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Answer: C
Q722025 · 3 Apr 2025 · Shift 1· Numerical answer
Consider the following reactions $A + Little amount NaCl + H_{2} SO_{4} \to CrO_{2} Cl_{2} + Side Products$ $CrO_{2} Cl_{2 (Vapour)} + NaOH \to B + NaCl + H_{2} O$ $B + H^{+} \to C + H_{2} O$ The number of terminal ' $O$ ' present in the compound ' $C$ ' is_________
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Answer: 6
Q652025 · 3 Apr 2025 · Shift 2
1. A.
2. B.
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4. D.
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Answer: C
Q642025 · 2 Apr 2025 · Shift 2
1. A.A, B and E only
2. B.A and D only
3. C.B, C and E only
4. D.B and E only
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Answer: D
Q572025 · 28 Jan 2025 · Shift 1
The products A and B in the following reactions, respectively are $A ⟵ Ag - N O_{2} C H_{3} - C H_{2} - C H_{2} - Br AgCN B$
1. A. $C H_{3} - C H_{2} - C H_{2} - ONO, C H_{3} - C H_{2} - C H_{2} - CN$
2. B. $C H_{3} - C H_{2} - C H_{2} - N O_{2}, C H_{3} - C H_{2} - C H_{2} - CN$
3. C. $C H_{3} - C H_{2} - C H_{2} - ONO, C H_{3} - C H_{2} - C H_{2} - NC$
4. D. $C H_{3} - C H_{2} - C H_{2} - N O_{2}, C H_{3} - C H_{2} - C H_{2} - NC$
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Answer: D
Q582025 · 24 Jan 2025 · Shift 1
The product (A) formed in the following reaction sequence is $C H_{3} - C \equiv CH i) H g^{2 +} . H_{2} S O_{4} ii) HCN iii) H_{2} /Ni Product (A)$
1. A. $C H_{3} - C H_{2} - OH ∣ CH - C H_{2} - N H_{2}$
2. B. $C H_{3} - C H_{2} - N H_{2} ∣ CH - C H_{2} - N H_{2}$
3. C. $C H_{3} - C H_{3} ∣ C ∣ OH - C H_{2} - N H_{2}$
4. D. $C H_{3} - C H_{3} ∣ C ∣ N H_{2} - C H_{2} - OH$
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Answer: C
Q532025 · 24 Jan 2025 · Shift 2
Find the compound 'A' from the following reaction sequences. $A aqua-regia B (1) KN O_{2} ∣N H_{4} OH (2) AcOH yellow ppt$
1. A. $NiS$
2. B. $MnS$
3. C. $ZnS$
4. D. $CoS$
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Answer: D
Q552025 · 24 Jan 2025 · Shift 2
1. A.
2. B.
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Answer: B
Q602025 · 23 Jan 2025 · Shift 2
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Answer: B
Q692025 · 23 Jan 2025 · Shift 2
Consider the following reactions $K_{2} C r_{2} O_{7} KOH - H_{2} O [A] H_{2} S O_{4} - H_{2} O [B] + K_{2} S O_{4}$ The products $[A]$ and $[B]$ , respectively are :
1. A. $K_{2} Cr (OH)_{6}$ and $C r_{2} O_{3}$
2. B. $K_{2} Cr O_{4}$ and $C r_{2} O_{3}$
3. C. $K_{2} Cr O_{4}$ and $K_{2} C r_{2} O_{7}$
4. D. $K_{2} Cr O_{4}$ and $CrO$
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Answer: C
Q742025 · 23 Jan 2025 · Shift 2· Numerical answer
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Answer: 4
Q532025 · 22 Jan 2025 · Shift 1
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Answer: D
Q712025 · 22 Jan 2025 · Shift 1· Numerical answer
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Answer: 154