Which of the following compounds would give a positive iodoform test ?
(a) 2-Butanol
(b) 1-Pentanal
(c) Acetone
(d) 3-Pentanone
(e) 2-Pentanone
(f) 3-Pentanol
(g) 1-Phenyl ethanol
(h) Acetophenone

Iodoform test is not given by (a) ethanol (b) ethanal (c) pentan-2-one (d) pentan-3-one

Which of the following compounds will not give positive iodoform test. Acetophenone, Benzophenone, 2 -Pentanone, 3 -Pentanone, Acetaldehyde, CH_(3)COCH_(3), (CH_(3))_(2)CHOH, (CH_(3)CH_(2))_(2)CH-OH, CH_(3)COOH, CH_(3)CONH_(2), CH_(3)COOCH_(3), CH_(3)COCl

I. Arrange the compounds of (a) in the order of decreasing boiling points and (b) in the order of decreasing solubility in water. (A) (1) Ethanol, (2) Propane, (3) Pentanol (B) (1) Butane, (2) 1,2,3-Pentane triol, (3) Butyl alcohol (C) (1) Pentane, (2) Pentanol, (3) Hexanol II. Arrange the following in the decreasing order of their boiling points. (A) (1) C_(3)H_(8) , (2) C_(2)H_(5)OH , (3) (CH_(3))_(2)O , (4) HOH_(2)C----CH_(2)OH (B) (1) 3-pentanol, (2) n-Pentane, (3) 2,2-Dimethyl propanol, (4) n-Pentanol III. Arrange the following alcohols (a) in the decreasing order of their boilling points and (b) in the decreasing order of their solubility in water. (1) n-Butyl alcohol (2) sec-Butyl alcohol and (3) tert-Butyl alcohol IV. Arrange the following compounds in the order of their increasing boiling points. (1) CH_(3)COC1 , (2) (CH_(3)CO)_(2)O , (3) CH_(3)CONH_(2) , (4) CH_(3)COOH

Draw the structures of each of the followings. (a)Butan- 1 -ol , (b)Butane- 2 -thiol , ( c)Pentan- 2 -amine , (d)Pentane- 2 -one , (e) 3 -Chloropentan- 1 -ol , (f)Hexan- 2,4 -dione

(a) Illustrate the following reactions giving a suitable example for each. (i) Cross aldol condensation (ii) Decarboxylation (b) Give simple tests to distinguish between the following pairs of compound (i) Pentan-2-one and pentan-3-one (ii) Benzaldehyde and Acetophenone (ii) Phenol and Benzoic acid

Write the structural formulae for the compounds that yield the following products on reductive ozonolysis. a. 2 mol butan -2- one b. Methanol + c. Pentan -3- one + Glyoxal + Propanal d. e. 2 mol f. Pentan -2- one +2 - Methyl butanal g.

Write down structure of the following compounds: 3-(1-chloroethyl)-4-methyl-4-phenyl-2-pentanone

(I) Arrange the compounds (a0 in the order of decreasing boilling points and (b) in the order of decreasing solubility in water (A) (1) Ethanol (2) Propane, (3) Pentanol

(A), (B) and (C ) are three non-cylic funtional isomers of a carbonyl compound with molecular formula C_(4)H_(8)O . Isomers (A) and (C ) give positive Tollen's test whereas isomer (B) does not give Tollens' test but gives positive iodoform test. Isomers (A) and (B) on reduction with Zn(Mg) | conc. HCl give the same product (D). (a) Write the structures of (A), (B) ,(C) and (D). (b) Out of (A), (B) and (C ) isomers, which one is least reactive towards addition of HCN ?