ECAT Chemistry Chapter 23 Aldehydes and Ketones Online Test With Answers

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ECAT Chemistry Chapter 23 Aldehydes and Ketones Online Test

Sr. # Questions Answers Choice
1 The IUPAC name fo CH3COCH (CH3)2is 4-Methylisopropyl ketone 3-Methyl-2 butanone Isopropylmethyl ketone 2 - Methyl- 2 butanone
2 Which is not true about acetophenone? Reacts to form 2,4-dintrophenyl hydrazine Reacts with Tollen's reagent to form silver mirror Reacts with I<sub>2</sub>/NaOH to form iodoform On oxidation with alkaline KMnO<sub>4</sub>followed by hydrolysis gives benzoic acid
3 An organic compound 'A' has the molecular formula C3H6O, it undergoes iodoform test. When saturated with HCl it gives 'B' of molecular formula C9H14O. A and B, respectively are Propanal and mesitylene Propanone and mesityl oxide Propanone and 2, 6-dimethyl-2,5-heptadien-4-one Propanone and mesitylene oxide
4 Which of the following reagents is used to distinguish acetone and acetophenone NaHSO<sub>3</sub> Grinard reagent Na<sub>2</sub>SO<sub>4</sub> NH<sub>4</sub>Cl
5 Which of the following react with NaOH to produce an acid and an alcohol? NCHO CH<sub>3</sub>COOH CH<sub>3</sub>CH<sub>2</sub>COOH C<sub>6</sub>H<sub>5</sub>COOH
6 Which of the following in incorrect? FelCl<sub>3</sub>is used in the detection of phenols Fehling solution is used in the detection of glucose Tollen's reagent is used in detection of unsaturation NaHSO<sub>3</sub>is used in the detection of carbonyl compounds
7 Benzophenone can be converted into benzene using Fused alkali Anhydrous AlCl<sub>3</sub> Sodium amalgam in water Acidfied dichromate
8 From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium iodide? HCHO CH<sub>3</sub>CHO CH<sub>3</sub>COCH<sub>3</sub> CO<sub>2</sub>
9 The addition of HCN to carbonyl compounds is an example of Nucleopihlic substituion Electrophilic addition Nueleophilic addition Electrophilic substitution
10 Chromyl chloride and toluene react to produce p-chlorotoluene Benzaldehyde Benzyl chloride Bezoic acid
11 Which of the following organic compounds exhibits positive Fehling test as well as iodoform test? Methanal Ethanol Propanone Ethanal
12 Clemensen's reduction of ketones is carried out in H<sub>2</sub>with Pd catalyst Glycol with KOH LiAIH<sub>4</sub>in water Zn-Hg with conc. HCl
13 In formadaldehyde and KOH are heated then we get Acetylene Methane Methyl alcohol Ethyl formate
14 C2H5CHO and (CH3)2CO can be distunguished by testing with Phenyl hydrazine Hydroxylamine Fehling solution Sodium bisulphate
15 In which reaction, aromatic aldehyde is treated with acid anhydride in the presence of corresponding salt of the acid to give unsaturated aromatic acid? Friedel-Crafts reaction Perkin's reaction Wurtz reaction None of these
16 Give IUPAC name fo Acetone Ethanal Propanone Butanone Propanal
17 Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon? Aldol condensation Reimer Tiemann reaction Cannizaaor's reaction Wolf-kishner reduction
18 Wolf-kishner reduction is used for the reduction of Nitro compounds Carboxylic acids Carbonyl compounds Olefins
19 Reductive ozonolysis of benzene produces Acetone Maleic anhydride Phthalic acid Glyoxal
20 Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction? Cyclohexanol Cyclohex-2-enol Cyclohexanone Benzene
21 Acetone is oxidized with Tollen's reagent Fehling solution Acidic dichromate solution Benedicts solution
22 Which of the following compounds gives a ketone with Grignard's reagent? Formaldehyde Ethanenitrile Ethyl alcohol Methyl iodide
23 Acetal is produced by reacting alcohol in the presence of dry HCl with Acetaldehyde Ketone Ether Carboxylic acid
24 Which of the following compounds does not react with NaHSO3? C<sub>6</sub>H<sub>5</sub>CHO Acetophenone Acetone Acetaldehyde
25 Cyanohydrin of which of the following forms lactic acid HCHO CH<sub>3</sub>COCH<sub>3</sub> CH<sub>3</sub>CHO CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CHO
26 Which reaction yields Bakelite? Urea with HCHO Tetramethyl glycol with Hezamethylene diisocyanate Phenol and HCHO Ethylene glycol and Dimethylterephthalate
27 Reduction of aldehydes with HI and P gives Primary alcohols Secondary alcohols Alkanes Tertiary alcohols
28 A compound possessingα-hydrogen atom, in the presence of dilute alkali formsβ-hydroxy aldehyde. This product on heating with dilute acid forms an unsaturated crotonaldehyde. The compound is CH<sub>3</sub>CHO CH<sub>3</sub>CH<sub>2</sub>CHO CH<sub>2</sub>= CH - CHO HC = C - CHO
29 Formalin is an aqueous solution of Furfural Fluorescein Formaldehyde Formic acid
30 Acetone is prepared by Oxidation of n-propyl alcohol Oxidation of acetaldehyde Pyrolysis of calcium acetate Pyrolysis of calcium acetate as well as acetic acid
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