ECAT Chemistry Online Test With Answers

ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following is halo form CHBr<sub>3</sub> CHCI<sub>3</sub> CHI<sub>3</sub> All of these
2 The carbon atom of a carbonyl group is Sp hybridized Sp<sup>2</sup>hybridized Sp<sup>3</sup>hybridized None of these
3 Which is used for the reduction of aldehydes and ketones NaBH<sub>4</sub> Pt/Pd Ni All of these
4 Ketones are reduced to Primary alcohol Secondary alcohol Tertiary alcohol All of these
5 Aldehydes can be distinguished from ketones by 2,4-DNPH test NaHSO<sub>3</sub>test N<sub>2</sub>H<sub>4</sub>test Tollen's test
6 The colour of ppts formed by Fehling's test is Brick red Red Yellow Orange
7 Aldehyde and small methyl ketones form crystalline ______ ppts with saturated sodium bisulphate solution White Red Yellow None of these
8 In Tolten's best, the end product is ______ formed White ppts Red ppts Yellow ppts Silver mirror
9 Treatment with HCN followed by acid hydrolysis Oxidation of acetaldehyde followed by basic hydrolysis Treatment with HCN followed by reduction Treatment with HCN followed by oxidation
10 Distillation of calcium salts of acetic acid and formic acids gives acetaldehyde. What compound would be obtained if only calcium salt of acetic acid is distilled Formaldehyde Butyraldehyde Propionaldehyde Acetone
11 Chromic acid used to oxidize Aldehyde Ketone Both a and b None of these
12 2-chlorobutanal alfa-chlorobutanal 2-chlorobutyraldehyde alfa- chlorobutyraldehyde
13 If an electrophile attacks then ______ bond breaks first C - H O - H C - O None of these
14 Williamson's synthesis is used to prepare Diethylether Phenolphthalein Hydrogenation Bakelite
15 Phenol is also known as Acetic acid Carbolic acid Tararic acid Trichloroacetic acid
16 When phenol is distilled with zinc dust. It is reduced to Benzene Benzaldehyde Toluene Hexanol
17 Which one is used as a fuel for internal combustion engines in many European countries and Brazil C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>OH CH<sub>3</sub>COOH C<sub>2</sub>H<sub>2</sub>
18 Which one of the following reacts immediately with conc. HCI in the presence of ZnCI2 Primary alcohol Secondary alcohol Tertiary alcohol Ether
19 The reaction of sodium with ethanol gives CH<sub>3</sub>OH NaH H<sub>2</sub>O H<sub>2</sub>
20 Which of the following is an isomer of ethanol CH<sub>3</sub>OCH<sub>3</sub> C<sub>2</sub>H<sub>5</sub>OC<sub>2</sub>H<sub>5</sub> CH<sub>3</sub>OH C<sub>2</sub>H<sub>5</sub>OH
21 Industrial alcohol may be denaturated by the addition of Methyl alcohol Acetone Pyridine Any of the above reagent
22 Rectified spirit contains alcohol about 80% 85% 90% 95%
23 Ethanol can be converted into ethanoic acid by Hydrogenation Hydration Oxidation Fermentation
24 Which compound is more soluble in water C<sub>2</sub>H<sub>5</sub>OH C<sub>6</sub>H<sub>5</sub>OH CH<sub>3</sub>OCH<sub>3</sub> n-hexanol
25 Which compound shows hydrogen bonding C<sub>2</sub>H<sub>6</sub> C<sub>2</sub>H<sub>5</sub>CI CH<sub>3</sub>-O-CH<sub>3</sub> C<sub>2</sub>H<sub>5</sub>OH
26 Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO4 Butanol Butanoic acid Butanone Butane
27 Which of the following compounds will not react with sodium metal to release hydrogen CH<sub>3</sub>CH<sub>2</sub>CH<sub>3</sub> CH<sub>3</sub>CH<sub>2</sub>OH C<sub>6</sub>H<sub>5</sub>OH C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>OH
28 Aqueous bromine Dilute HNO<sub>3</sub> Dilute HCI CH<sub>3</sub>COCI
29 Which one of the following correctly describes the acid properties of phenol Stronger than HCI Stronger than carboxylic acid An acid stronger than carbonic acid An acid weaker than carboxylic acid
30 Phenol is used in the preparation of Bakelite Phenatherene Cellulose All of these
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