ChemistryHardHigh School (11–12)Organic Chemistry: Some Basic Principles and Techniques › Classification, IUPAC Nomenclature and IsomerismNEET
Created by StemPy LabThe figure shows four pairs of compounds, A to D, drawn as bond-line formulas. The two compounds of each pair have the same molecular formula. Match each pair in List-I with the kind of structural isomerism it shows in List-II. List-I (Pair) A. Pair A, first row of the figure B. Pair B, second row C. Pair C, third row D. Pair D, fourth row List-II (Kind of isomerism) I. Functional group isomerism II. Chain isomerism III. Metamerism IV. Position isomerism
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← A student names five compounds that each carry two groups. Read the names. (i) CH₃CH(OH)CH₂COOH is 3-hydroxybutanoic acid. (ii) NC-CH₂CH₂-CHO is 3-cyanopropanal, because the aldehyde group ranks above the nitrile group. (iii) CH₃COCH₂CONH₂ is 3-oxobutanamide. (iv) CH₃OCH₂CH₂OH is 2-methoxyethan-1-ol. (v) CH₂=CHCH₂OH is prop-1-en-3-ol, since the double bond gets the lowest locant. How many of the statements above are correct?A student lists every aldehyde and every ketone with the molecular formula C₅H₁₀O. He counts structural isomers only, not stereoisomers. He draws the straight chain of five carbons and every branched chain, and places the carbonyl group in each possible position, taking care not to count one compound twice under two names. How many aldehydes and how many ketones should his list contain? →
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