ECAT Chemistry Online Test With Answers

image
image
image

ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 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
2 Give IUPAC name fo Acetone Ethanal Propanone Butanone Propanal
3 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
4 Wolf-kishner reduction is used for the reduction of Nitro compounds Carboxylic acids Carbonyl compounds Olefins
5 Reductive ozonolysis of benzene produces Acetone Maleic anhydride Phthalic acid Glyoxal
6 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
7 Acetone is oxidized with Tollen's reagent Fehling solution Acidic dichromate solution Benedicts solution
8 Which of the following compounds gives a ketone with Grignard's reagent? Formaldehyde Ethanenitrile Ethyl alcohol Methyl iodide
9 Acetal is produced by reacting alcohol in the presence of dry HCl with Acetaldehyde Ketone Ether Carboxylic acid
10 Which of the following compounds does not react with NaHSO3? C<sub>6</sub>H<sub>5</sub>CHO Acetophenone Acetone Acetaldehyde
11 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
12 Which reaction yields Bakelite? Urea with HCHO Tetramethyl glycol with Hezamethylene diisocyanate Phenol and HCHO Ethylene glycol and Dimethylterephthalate
13 Reduction of aldehydes with HI and P gives Primary alcohols Secondary alcohols Alkanes Tertiary alcohols
14 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
15 Formalin is an aqueous solution of Furfural Fluorescein Formaldehyde Formic acid
16 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
17 A compound A has a molecular formula C2Cl3OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B.A can also be obtained by the action of Cl2on Ethanol. A is Chloral hydrate CHCl<sub>3</sub> CH<sub>3</sub>Cl Chloroacetic acid
18 Self condensation of acetaldehyde in the presence of dilute alkalies gives An acetal An aldol Mesitylene Propionaldehyde
19 Which of the following does not react with phenyl hydrazine? Ethanol Ethanal Acetone Acetophenone
20 A nucleophilic reagent will readily Attack Ethylene Ethanal Ethanol Ethylamine
21 When vapours of isopropyl alcohol are passed over heated copper, the major product obtained is Propane Propylene Acetaldehyde Acetone
22 Which of the following is hypnotic? Acetaldehyde Metaldehyde Paraldehyde None
23 Wacker method involves the conversion of alkene using PdCl2into corresponding Alcohol Ketone Aldehyde Ether
24 Which of the following gives iodoform on heating with a solution of I2containing Na2CO3? Ethyl alcohol Acetone Ethyl alcohol as well as acetone Methyl alcohol
25 Aldehydes can be distinguished from ketones by using Schiff's reagent Conc. H<sub>2</sub>SO<sub>4</sub> Anhy. ZnCl<sub>2</sub> Resorcinol
26 Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as Wurtz reaction Cannizzaro reaction Friedel Craft reaction Claisen reaction
27 Which of the following does not turn Schiff's reagent to pink? Formaldehyde Bezaldehyde Aceton Methyl chloride
28 At room temperature formaldehyde is Gas Liquid Solid None of the above
29 Cannizzaro reaction is not given by Trimethyl acetaldehyde Acetaldehyde Benzaldehyde Formaldehyde
30 On heating acetaldehyde with ammonical silver nitrate solution, we get CH<sub>3</sub>OH Silver acetate HCHO Silver mirror
Download This Set
×