Basics Of Organic Reaction Mechanism — Part 2 MCQs with Explanations

I and III is the correct answer to “Among the carboxylic acid shown below, the ones that exhibit stereoisomerism and also form, cyclic anhydrides on heating are I. HOOCCH(CH 3 )CH 2 CH 2 COOH II. HOOCCH(C 3 H 7 )COOH III. HOOCCH(C 2 H 5 )CH 2 COOH IV. HOOCC(CH 3 )(C 2 H 5 )COOH”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

I:terpenoid; II:steroid; III:alkaloid; IV:DNA base is the correct answer to “Match the following compounds with their respective classes”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

5'-UCGAUGUGA-3' is the correct answer to “The sequence of an mRNA molecule produced from a DNA template strand with the composition 5'-AGCTACACT-3' is”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

3, 2, 6, 7 is the correct answer to “Pyrrole + PhMgBr → E + F E + MeCl → G + H F + MeCl → no reaction without a catalyst The structure of products E - H respectively are”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

position 4 or 5 is the correct answer to “The mono protonation of adenine (X) in acidic solution mainly occurs at”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

both K and L is the correct answer to “The molecules(s) that exist as meso structure (s) is/are”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

P at pH 1; Q at pH 12; R at pH 7 is the correct answer to “Three molecular ionic states, P-R are possible for the amino acid histidine. Identify the correct choice of pH values, respectively for the observation of the ionic states P-R.”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

sp and sp2 is the correct answer to “In allene, hybridization of the central and terminal carbons respectively, are”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

$$\left[ {{I^ + }} \right]$$ is the correct answer to “Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO 3 , iodination is possible. The electrophiles formed in the case is”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

decreases electron density at ortho and para-positions is the correct answer to “In electrophilic aromatic substitution reactions, nitro group is meta-directing because the nitro group”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

1-methoxycyclohexa-1, 4-diene is the correct answer to “The major product formed in the reaction of anisole with lithium, liquid ammonia and t-butanol is”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

3, 4 and 2 is the correct answer to “The number of signals that appear in the broad-band decoupled 13 C NMR spectrum of ortho, meta and para-dichlorobenzene, respectively are”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

1S, 6S is the correct answer to “The configurations at the two asymmetric centres (C-1 and C-6) in the bicyclo [4.4.0] decane, given below are”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

double is the correct answer to “In the reaction, if the concentration of both the reagents is doubled then the rate of the reaction will”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

cyclohexane and toluene is the correct answer to “Cyclohexyl benzyl ether when reacted with hydrogen in the presence of 10% palladium on charcoal generates a mixture of”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

base is the correct answer to “Optically active 2-octanol rapidly loses its optical activity when exposed to”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

ethyl chloroformate is the correct answer to “Benzaldehyde can be prepared by reacting phenyl magnesium bromide with”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

Y < X < Z is the correct answer to “The increasing order of basicity among the following is”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.

DMSO reacts with (COCl)2 initially to give which reacts with the alcohol is the correct answer to “Which of the statements is correct about the mechanism of the following reaction”. This question is standard in competitive examination syllabi for Basics Of Organic Reaction Mechanism.