Structural isomerism: chain, position, functional, metamerism

27 questions on Structural isomerism: chain, position, functional, metamerism from the IUPAC Nomenclature and Structural Isomerism chapter: 6 NEET level, 10 JEE Main, 11 JEE Advanced. Each one opens with its answer and solution.

• Ethanol (CH3CH2OH) and dimethyl ether (CH3OCH3) are an example of NEET level
• n-Butane and isobutane (2-methylpropane) show NEET level
• Propan-1-ol and propan-2-ol are related as NEET level
• Diethyl ether and methyl propyl ether are NEET level
• Which of the following pairs does NOT consist of isomers? NEET level
• Which of the following is a functional isomer of ethylamine, CH3CH2NH2? NEET level
• CH3CH2CH2COOH and CH3COOCH2CH3 are related as JEE Main level
• Which pair consists of metamers? JEE Main level
• Which of the following are structural isomers of butanal, CH3CH2CH2CHO? JEE Main level
• Acetone, CH3COCH3, and prop-1-en-2-ol, CH2=C(OH)CH3, are best described as JEE Main level
• Which of the following is an isomer of nitroethane, CH3CH2NO2? JEE Main level
• In which pair are the two compounds chain isomers? JEE Main level
• Propene and cyclopropane (C3H6) show JEE Main level
• The number of secondary amines among the structural isomers of C4H11N is JEE Main level
• The number of carboxylic acid structural isomers of C5H10O2 is JEE Main level
• Select the correct statements about C3H6O isomers. JEE Main level
• How many structural isomers (no stereoisomers) contain a benzene ring and have the molecular formula C8H10O? Count phenols, aromatic alcohols and aromatic ether... JEE Advanced level
• The number of open-chain structural isomers of C5H10O that are aldehydes or ketones (no stereoisomers) is JEE Advanced level
• The total number of saturated acyclic structural isomers of C5H12O (alcohols plus ethers, no stereoisomers) is JEE Advanced level
• The total number of structural isomers of C5H10 that are alkenes or cycloalkanes (constitutional isomers only) is JEE Advanced level
• Which pair is correctly labelled with its type of isomerism? JEE Advanced level
• The total number of acyclic structural isomers of C4H8O2 that are carboxylic acids or esters (no stereoisomers) is JEE Advanced level
• Which of the following pairs consists of compounds that are NOT isomers of each other? JEE Advanced level
• Select the correct statements about keto-enol tautomerism. JEE Advanced level
• Select the correct statements about the isomers of C5H10 (alkenes and cycloalkanes). JEE Advanced level
• Select the correct statements about the isomers of C4H10O. JEE Advanced level
• Select the species with degree of unsaturation equal to 4. JEE Advanced level