Multi-concept numerical problems and analytical reasoning typical of NSEC question style.
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Q1 · Olympiad-style Problem Solving · HARD
A compound X with molecular formula C₅H₁₀O₂ gives a positive iodoform test and does not react with Fehling's solution. Upon heating with concentrated H₂SO₄, it forms a cyclic compound. What is the most likely structure of X?
Q2 · Olympiad-style Problem Solving · HARD
A gaseous mixture contains N₂O₄ and NO₂ in equilibrium at 350 K. The total pressure is 2.0 atm and the degree of dissociation of N₂O₄ is 0.4. What is the value of Kₚ for the reaction N₂O₄(g) ⇌ 2NO₂(g)?
Q3 · Olympiad-style Problem Solving · MEDIUM
An organic compound A (C₄H₈O) reacts with hydroxylamine to form an oxime and with Grignard reagent followed by hydrolysis to give a tertiary alcohol. Compound A does not show geometrical isomerism. Which of the following is compound A?