ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Aldehydes give reactions : Oxidation and reduction Base-catalysed nucleophilic Acid catalysed nucleophilic All of these
2 Condensation of aldeydes withα-hydrogen gives: Acetal Ketal Aldol Cannizzaro product
3 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>
4 Aldehydes are reduced to : Pri-alcohol Sec-alcohol Ter-alcohol All of these
5 Hydroxyl amine is a derivative of:: Alcohol Aldehyde Ammonia Ketone
6 Which reaction is of condensation or addition elimination reaction? Ketol Aldol Cannizzaro All of these
7 Cannizzaro's reaction is type of reaction: Self oxidation-reduction reaction Disproportion reaction Addition A and B
8 Common names of aldehydes are given by corresponding: Ketone Alcohol Carboxylic acid ester
9 Aledehydes ketones can be prepared form alcohols by their: Reduction Oxidation Decomposition Synthesis
10 Iodoform test is given by: Formaldehyde and Higher ketones Formaldehyde Acetaldehyde and methyl ketones Acetaldehyde
11 Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives: Pri-alcohol Sec-Alcohol Ter-alcohol Carboxylic
12 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
13 Reaction of Grignard's reagent with formaldehyde gives: pri-alcohol sec-alcohol ter-alcohol carboxylic
14 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>
15 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>
16 Carboxyl compounds have functional group: R-C-X R-CH=O RCOR All
17 Aldehydes are oxidizes are to give: Primary alcohol Sec-alcohol Ter-alcohol Carboxylic acid
18 Which of the following reagent will react with both aldehyde and ketones? Grinard's reagent Tollen's reagent Fehling's reagent Benedict's reagent
19 Cannizzzaro's reaction is not given by: Formaldehyde Acetaldehyde Benzaldehyde Trimethyl
20 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>
21 Which of the following compounds will not give iodoform test on treatment with I2/ NaOH? Acetaldehyde Acetone Butane 3-pentanone
22 Acetone reacts with HCN to form a cyanohydrin. It is an example of: Nucleophilic substitution Nucleophilic addition Electrophilic addition Electrophilic substitution
23 Ketones are prepared by the oxidation of: Primary alcohol Secondary alcohol Tertiary alcohol None of these
24 Which of the following will have the highest boiling point? Methanal Ethanal Propanal 2-Hexanone
25 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
26 The carbon of a carbonyl group is: sp hybridized sp<sup>2 </sup>hybridized sp<sup>3 </sup>Hybidized None of these
27 The organic compounds which derivative of hydrocarbons due to oxygen is: Phenol Alcohol Alkyl halide Either
28 The organic compounds which are derivative of hydrocarbons of oxygen are: Carbohydrates Phenols Alcohals All of these
29 Either, an organic compound has close resemblance in structure and thus a derivative of: Water Oxides of lithium Oxides of magnisium Oxides of aluminium
30 The organic compound, alcohols are much closer to, in structure and hence is also called its derivative: Water Oxidizes of lithium oxides Oxidizes of magnesium Oxidizes of aluminium
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