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Q. The structure of the carbonyl compound P is
[IIT 2009]

Q. The structure of the products Q and R, respectively, are
[IIT 2009]


Q. The structure of the product S is
[IIT 2009]

Paragraph for Questions Nos. 4 to 5An acyclic hydrocarbon P, having molecular formula $\mathrm{C}_{6} \mathrm{H}_{10}$, gave acetone as the only organic product through the following sequence of reactions, in the which Q is an intermediate organic compound.

Q. The structure of compound P is –
[IIT 2011]

Q. The structure of the compound Q is –
[IIT 2011]

Q. The number of aldol reaction(s) that occurs in the given transformation is
[IIT 2012]

Q. Among P, Q, R and S, the aromatic compound(s) is / are :
[IIT 2013]

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Sol. (A,B,C,D)





Q. After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are)
(A) Reaction I : P and Reaction II : P(B) Reaction I : U, acetone and Reaction II : Q acetone(C) Reaction I : T, U, acetone and Reaction II : P(D) Reaction I : R, acetone and Reaction II : S acetone [IIT 2013]

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Sol. (C)




Q. The major product in the following reaction is
[IIT 2014]

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Sol. (D)



Q. The major product of the following reaction is –
[IIT 2015]

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Sol. (A)


Q. In the following reactions, the product S is –
[IIT 2015]

Q. The reaction(s) leading to the formation of 1,3,5-trimethylbenzene is (are)
[JEE Adv. 2018]

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Sol. (A,B,D)




Q. In the following reaction sequence, the amount of D (in g) formed from 10 moles of acetophenone is____.(Atomic weight in g mol–1: H = 1, C = 12, N = 14, O = 16, Br = 80. The yield (%) corresponding to the product in each step is given in the parenthesis)
[JEE Adv. 2018]

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2nd paragraph options are wrong.
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