ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 A peptide having molecular mass upto 10,000 is called a Vitamin Protein Polypeptide Dipetide
2 If a large number of amino acids (hundreds to thousands) are joined by peptide bonds, the resulting product is called Dipeptide Tripeptide Polypeptide None of these
3 The acid present in vinegar is CH<sub>3</sub>COOH HCI H<sub>2</sub>SO<sub>4</sub> HCOOH
4 The OH group present in acids may be replaced by CI atom on treatment with PCI<sub>5</sub> SOCI<sub>2</sub> Both of them None of the above
5 Acetamides are formed by the reaction of carboxylic acids with Acids Bases Salts NH<sub>3</sub>
6 Which of the following is present in the stings of bees and wasps Formic acid Citric acid Carbolic acid Formalin
7 The human body can synthesize ______ amino acids 1 10 20 19
8 Which one of the following has been hydroxyl and carboxylic acid groups Phenols Picric acid Phthalic acid Salicylic acid
9 Optical activity is possible in Oxalic acid Acetic acid Tartaric acid Formic acid
10 Those amino acids which contain two carboxylic groups are called ______ amino acids Acidic Basic Neutral None of these
11 Which of the following statements about acetic, anhydride is not correct It is immiscible with water but is hydrolysed to give acetic acid It is prepared by the action of actyl chloride on the sodium salt of acetic acid it reacts with ammonia to give acetamide it is a strong acid
12 The human body can synthesize ______ amino acids 1 10 20 19
13 The amino acids which human body can synthesize are called ______ amino acid Essential Non essential Acidic Basic
14 The acid present in the stings of bees and wasps in Acetic acid Formic acid Formalin Formaldehyde
15 An artificial smell of banana is produced in many articles y using esters which of the following is that Amyl acetate Isoamyl valerate Octyl acetate Methyl butyrate
16 Esters have peculiar smell, which of the following is used as an essence of orange Isoamyl acetate Iosamyl valerate Octyl acetate Methyl butyrate
17 The Zwitter ion is also called International salt Internal salt No salt None of these
18 Lysine is ______ amino acid Acidic Basic Natural None of these
19 When acetic acid and ethanol react together an ester is formed which is called Ethyl ester Ethanoic acid Ethanoic acid Ethyl acetate
20 Partial reduction of acetic acid happens with NH<sub>3</sub> LiAIH<sub>4</sub> P + HI PCI<sub>5</sub>
21 When a carboxylic acid reacts with alcohol, it produces a new class of compounds Ethers Esters Anhydride Amides
22 The general formula of amino acids is
23 The M.P. of carboxylic acids containing even number of carbon atoms is ______ than the next Higher Low Equal None
24 Acetamide is prepared by Heating ammonium acetate Heating methyl cyanide Heating ethyl acetate The hydrolysis of methyl cyanide
25 Which of the following is not a fatty acid Propanoic acid Acetic acid Phthalic acid Butanoic acid
26 Pro stand for Valine Alamine Glycine Proline
27 Etherification is catalyzed by Acids Gases Salts None of the these
28 The solution of which acid is used for seasoning of food Formic acid Acetic acid Benzoic acid Butanoic acid
29 Which reagent is used to reduce a carboxylic group to an alcohol H<sub>2</sub>/Ni H<sub>2</sub>/Pt NaBH<sub>4</sub> LiAIH<sub>4</sub>
30 Which of the following derivative can not be prepared directly from acetic acid Acetamide Acetyl chloride Acetic anhydride Ethyl acetate
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