Hexane and 3-methoylpentane are examples of (4) constitutional Isomers 10. Which
ID: 1030912 • Letter: H
Question
Hexane and 3-methoylpentane are examples of (4) constitutional Isomers 10. Which of the following substituents is the highest prtority when assigning R or S (a) -H b)-C (c)-(C-oJCH (d) -(C o)oH 11. Which of the following stereochemical configuration is the enantiomer of 2R, 35-threonime? (a) 2R, 3R (b) 2S, 3R (c) 28, 35 (d) None of these is correct 12. Which of the following statements about Grignard reagents is EALSE? (a) Grignard reagents contain a carbon-metal bond (b) They are a source of nucleophilic carbanions (c) Grignard reagents are strong acids (d) None -all of the above statements are true 13. Which of the following is an Ss1 reaction? A) NaOH +Nad H20 B) H NaOH Nac H2O c) NaOH NaCI H20 D) H20 H-CExplanation / Answer
9 (d) constititutional isomers (differ only in arrangement of atoms)
10 (b) Cl (Its Molecular weight is highest)
11 (b) 2S, 3R (because this will be non-supeimposable mirror image which means only configuration will reverse)
12 (c) Grignard reagents are strong acid ( neither they dont have proton to act as acid nor they are electron deficient)
13 (d) because it gives both R and S isomers which means the intermediate is carbocation which is formed only in SN1.