ABC26OR0089 · alpha -Pinene on reaction with dilute alkaline KMnO4 produces a diol, which on further oxidation with chromium trioxide gives product A… · JUNE 2013
ABC26OR0090 · The major product formed in the reaction of guanosine with one equivalent of methyl iodide is · JUNE 2013
ABC26OR0094 · The major product B formed in the following reaction sequence, and overall yield of its formation are A B · DEC 2013
ABC26OR0098 · The biosynthetic precursor of abietic acid is · DEC 2014
ABC26OR0100 · Biogenetic precursors for the natural product umbelliferone among the following are umbelliferone · JUNE 2015
ABC26OR0101 · Antitubercular drug(s) among the following is (are) · JUNE 2015
ABC26OR0102 · D-Mannose upon refluxing in acetone with CuSO4 and H2 SO4 gives · DEC 2015self-practice
ABC26OR0103 · The correct match for the compounds in column A with the description in column B is Column A Column B (P) (X) Oil of Wintergreen (Q) (Y)… · DEC 2015
ABC26OR0105 · At pH 10, tryptophan exists as · JUNE 2016
ABC26OR1104 · At pH 10, tryptophan exists as · JUNE 2016
ABC26OR0106 · Correct characteristics of the functional groups of adenine in DNA base pair are · DEC 2016
ABC26OR0108 · The correct match of natural products in Column-I with their biosynthetic precursors in Column-II is Column-I A. B. Column-II I. L-Lysine… · JUNE 2017
ABC26OR0112 · The structure of ribonucleoside uridine is · DEC 2017
ABC26OR0113 · Correct sequence of reagents (i)-(iii) required for the conversion of A to B is A. Thionyl chloride, B. 4-Chloropyridine, C. Piperidine · DEC 2017
ABC26OR0116 · The keto-hexose among the following is · DEC 2018
ABC26OR0117 · Reaction of deoxymonosaccharide A with 2 equivalents of HIO4 affords propanedial, formic acid and formaldehyde. The structure of A is · JUNE 2019
ABC26OR1106 · Reaction of deoxymonosaccharide A with 2 equivalents of HIO4 affords propanedial, formic acid and formaldehyde. The structure of A is · JUNE 2019
ABC26OR0119 · The natural product that gives signal at delta 218 ppm in its 13 C NMR spectrum · DEC 2019
ABC26OR0120 · the major product formed in the following reaction is · DEC 2019self-practice
ABC26OR1107 · the major product formed in the following reaction is · DEC 2019self-practice
Steroids
ABC26OR0085 · Match the following drugs with their medicinal activity · JUNE 2013
ABC26OR0086 · The biosynthetic precursor for the steroids is · JUNE 2013
ABC26OR0092 · For estrone, among the statements A-C, the correct ones are · DEC 2013
ABC26OR0097 · Atorvastatin (structure given below) is a · JUNE 2014
ABC26OR0107 · The correct match for the following is · DEC 2016
Terpenoids
ABC26OR0087 · Number of isoprene units present in lupeol is · JUNE 2013
ABC26OR0088 · In the UV-visible is spectrum, a diterpenoid exhibited at 275 nm . The compound, among the choices given below is · JUNE 2013
ABC26OR0095 · The major product formed in the sulfuric acid mediated rearrangement of the sesquiterpene saritonin A is · DEC 2013