Question

21-Ketones are easily reduced to secondary alcohols. b- Primary CH, CCH, a-Secondary alcohol alcohol C- to acetaldehyde acid d-to carboxylic 22-Ozonolysis of alkenes yields aa-ketones if one of the unsaturated carbon atoms is disubstituted b-alcohol C-carboxylic acid d-alkane 23-Aldehyde C=0 is more polarized than ketone C-0 because a-As in carbocations, more alkyl groups stabilize + character b-Ketone has more alkyl groups, stabilizing the C=0 carbon inductively cc- due to a and b d- none of the above 24-Aldehydes and unhindered ketones react with HCN to form a-Cyanohydrine b-alcohol c-alkyne d-alkene 25-addition of a Grignard reagent to formaldehyde followed by H,O* gives aa-lº alcohol b- 2ndry alcohol c- tertiary alcohol d-Aldhyde 26-aromatic amines react with the C=0 group of aldehydes and ketones to give a- amino aldhyde bb-imines (Schiff bases) c- carboncation d-alcohol 27-Predict the resultant compound class when an aldehyde is hydrogenated. a. hemiketal b. alcohol c. carboxylic acid d. no reaction 28-Fully reacting an aldehyde with an alcohol will produce? a. a carboxylic acid b. a primary alcohol c.no reaction dd, an acetal 29. Which of the following has the highest boiling point? a. propanal b. methanal C. ethanal d. butanal

Answer 1

24 Ketones Anguoer Sonadary aleato 0 1+ NaBHy Taducti m en Ce- aleoho) yields katones if oe 6 the is dinnbsti tuteal nsatwrateel eanbonatom RI Kotone) aluane) 23 polorizeal tham CNO in more Ketone c beeause due to a and b t 11 R Aldaiydelers Ketue-more +I + I cfeet o n CTudueecd eharge aecumula Hi mC+s & e-atom DD listributisn more polan ers on catom of aun bomy and

24 pidehydes ane nhinderee ketones reaet with HeN to form eamohyrie -OH OH + HEN 1t Adim ofa Gimnd rengeat to form aives oma -ongBr R 26 Promatic amines meaet with thue aldelgoles and katones to give 6imine (Sehiff bane) + H, o Cimine) 2) Preadiet the eultant eomprnel ale hyde in g dro 2evatec 61 aleahol clars cohen an bution CH7 e-H ). alesho1)

with an aleho) coill prduee or heminee ta imihally than asetal. An aeetol heat elt gon -e-14 CAutu) 29 cohich 6 fatnaig hest the han the aioint d butanad Kepmoleenlor Cas Molor mam io highest)