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JEE Advanced 2027: High-Weightage Chemistry Questions
JEE Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
For a spontaneous electrochemical cell reaction, E°cell must be:
- A. Zero
- B. Positive
- C. Negative
- D. Equal to 1
Q2
The Nernst equation at 298 K for the cell Zn|Zn²⁺||Cu²⁺|Cu has the form E = E° − (0.0592/2)log([Zn²⁺]/[Cu²⁺]). If [Zn²⁺] = 0.1 M and [Cu²⁺] = 0.01 M, E = E° + ?
- A. + 0.0296 V
- B. − 0.0296 V
- C. + 0.0592 V
- D. 0
Q3
Which of the following dienes undergoes Diels-Alder reaction?
- A. 1,2-butadiene (allene type)
- B. 1,3-butadiene (s-cis conformation)
- C. Isolated dienes
- D. Any alkene
Q4
Equivalent conductance at infinite dilution (Λ∞) for weak electrolytes is determined by:
- A. Measuring at very low concentration
- B. Kohlrausch law of independent migration of ions
- C. Direct extrapolation
- D. Ostwald dilution law
Q5
The IUPAC name of CH₃-CH=CH-CHO is:
- A. But-2-enal
- B. Crotonaldehyde only
- C. But-3-enal
- D. 2-butenal
Q6
Ozonolysis of 2-butene followed by reductive workup gives:
- A. Two molecules of CH₃CHO
- B. CH₃COOH + CH₃COOH
- C. CH₃CHO + HCHO
- D. One molecule of butanedial
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