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 In carboxyl group the bond between C and oxygen is: Sigma bond Single bond Double Bond Triple bond
2 Dehydration of allcohol gives: Alkane Alkene Aldehyde ketone
3 Aldehydes give reactions : Oxidation and reduction Base-catalysed nucleophilic Acid catalysed nucleophilic All of these
4 Condensation of aldeydes withα-hydrogen gives: Acetal Ketal Aldol Cannizzaro product
5 Which is mild oxidizing agent ? Tollen's reagent KMnO<sub>4</sub> / H<sub>2</sub>SO<sub>4</sub> K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> / H<sub>2</sub>SO<sub>4</sub> HNO<sub>3</sub>
6 Aldehydes are reduced to : Pri-alcohol Sec-alcohol Ter-alcohol All of these
7 Hydroxyl amine is a derivative of:: Alcohol Aldehyde Ammonia Ketone
8 Which reaction is of condensation or addition elimination reaction? Ketol Aldol Cannizzaro All of these
9 Cannizzaro's reaction is type of reaction: Self oxidation-reduction reaction Disproportion reaction Addition A and B
10 Common names of aldehydes are given by corresponding: Ketone Alcohol Carboxylic acid ester
11 Aledehydes ketones can be prepared form alcohols by their: Reduction Oxidation Decomposition Synthesis
12 Iodoform test is given by: Formaldehyde and Higher ketones Formaldehyde Acetaldehyde and methyl ketones Acetaldehyde
13 Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives: Pri-alcohol Sec-Alcohol Ter-alcohol Carboxylic
14 Reaction of Grignard's reagent eith aldehyds other formaldehyde gives: Reaction of Grignard's reagent with formaldehyde gives: Pri-alcohol Sec-alcohol Ter-alcohol Carboxylic
15 Reaction of Grignard's reagent with formaldehyde gives: pri-alcohol sec-alcohol ter-alcohol carboxylic
16 Formula of acetone is: HCHO CH<sub>3</sub>CHO CH<sub>3</sub>OCH<sub>3</sub> CH<sub>3</sub>OC<sub>2</sub>H<sub>5</sub>
17 The homologous series of aldehydes and ketones have general formula: C<sub>n</sub>H<sub>2n</sub>O C<sub>n</sub>H<sub>n</sub>O C<sub>n</sub>H<sub>2n-1</sub>O C<sub>n</sub>H<sub>n</sub>O<sub>n</sub>
18 Carboxyl compounds have functional group: R-C-X R-CH=O RCOR All
19 Aldehydes are oxidizes are to give: Primary alcohol Sec-alcohol Ter-alcohol Carboxylic acid
20 Which of the following reagent will react with both aldehyde and ketones? Grinard's reagent Tollen's reagent Fehling's reagent Benedict's reagent
21 Cannizzzaro's reaction is not given by: Formaldehyde Acetaldehyde Benzaldehyde Trimethyl
22 Which of the following compounds will react with reagent ? CH<sub>3</sub> CO H CH<sub>3</sub> CO CH<sub>3</sub> CH<sub>3 COOH</sub> CH<sub>3 </sub>CO CH<sub>2</sub>CH<sub>3</sub>
23 Which of the following compounds will not give iodoform test on treatment with I2/ NaOH? Acetaldehyde Acetone Butane 3-pentanone
24 Acetone reacts with HCN to form a cyanohydrin. It is an example of: Nucleophilic substitution Nucleophilic addition Electrophilic addition Electrophilic substitution
25 Ketones are prepared by the oxidation of: Primary alcohol Secondary alcohol Tertiary alcohol None of these
26 Which of the following will have the highest boiling point? Methanal Ethanal Propanal 2-Hexanone
27 Formalin is: 10% solution of formaldehyde in water 20% solution of formaldehyde in water 40% solution of formaldehyde in water 60% solution of formaldehyde in water
28 The carbon of a carbonyl group is: sp hybridized sp<sup>2 </sup>hybridized sp<sup>3 </sup>Hybidized None of these
29 Hydrogenation of bezoyl chloride in presence of Pd on BaSO4gives Benzyl alcohol Benzaldehyde Benzoic acid Phenol
30 Aniline reacts with which of these to form Schiff base? Acetic acid Bezaldehyde Acetone NH<sub>3</sub>
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