Main 20 · Advanced 25
Named reactions
- Advanced 2018ChemistrySingle correct
The compound Z is
- Advanced 2018ChemistryNumerical
In the following reaction sequence, the amount of D (in g) formed from 10 moles of acetophenone is ____.
(Atomic weights in g mol: H = 1, C = 12, N = 14, O = 16, Br = 80. The yield (%) corresponding to the product in each step is given in the parenthesis)
Acetophenone → [NaOBr; HO] → A (60%) → [NH, Δ] → B (50%) → [Br/KOH] → C (50%) → [Br (3 equiv), AcOH] → D (100%)
- Advanced 2018ChemistryList match
The desired product X can be prepared by reacting the major product of the reactions in LIST-I with one or more appropriate reagents in LIST-II.
(given, order of migratory aptitude: aryl > alkyl > hydrogen)
The correct option is
- Advanced 2017ChemistrySingle correct
For the synthesis of benzoic acid, the only CORRECT combination is
- Advanced 2017ChemistryMultiple correct
Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is . Q undergoes Cannizzaro reaction but not haloform reaction, whereas S undergoes haloform reaction but not Cannizzaro reaction.
(i) P Q ()
(ii) R S ()
The option(s) with suitable combination of P and R, respectively, is(are)
- Main 2017ChemistrySingle correct
A compound of molecular formula reacts with acetophenone to form a single cross-aldol product in the presence of base. The same compound on reaction with conc. NaOH forms benzyl alcohol as one of the products. The structure of the compound is :
- Advanced 2016ChemistryMultiple correct
The correct statement(s) about the following reaction sequence is(are)
- Advanced 2016ChemistrySingle correct
The major product of the following reaction sequence is
Isobutyrophenone
- Main 2016ChemistrySingle correct
The correct statement about the synthesis of erythritol () used in the preparation of PETN is :
- Advanced 2015ChemistryInteger
Among the following, the number of reaction(s) that produce(s) benzaldehyde is
- Main 2015ChemistrySingle correct
In the following sequence of reactions :
the product C is : - Main 2014ChemistrySingle correct
Which one of the following reactions will not result in the formation of carbon-carbon bond ?
- Main 2014ChemistrySingle correct
The major product of the reaction
is : - Main 2014ChemistrySingle correct
Which is the major product formed when acetone is heated with iodine and potassium hydroxide ?
- Main 2014ChemistrySingle correct
The following reaction
is known as : - Main 2014ChemistrySingle correct
Tischenko reaction is a modification of :
- Advanced 2013ChemistryMultiple correct
In the following reaction, the product(s) formed is(are)
- Advanced 2013ChemistryMultiple correct
After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are)
- Advanced 2012ChemistrySingle correct
The number of aldol reaction(s) that occurs in the given transformation is
- Advanced 2012ChemistrySingle correct
The compound I is