ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 The word paper is derived from the name of which reedy plany Rose Sun flower Papyrus Water hyacinth
2 During the manufacturing process of cement the temperature of the decomposition zone goes up to 600°C 800°C 1000°C 1200°C
3 Micro-nutrients are required in quantity ranging from 4g-40g 6g-200g 6Kg-200Kg 4Kg-40Kg
4 Phosphorus helps the growth of Root Leave Stem Seed
5 The nitrogen present in some fertilizers helps plants To fight against disease To produce fat To undergo photosynthesis To produce protein
6 Which woody raw material is used of the manufacture of paper pulp Cotton Bagasse Poplar Rice straw
7 Which three elements are needed for the healthy growth of plants N, S, P N, Ca, P N, P, K N, K, C
8 The number of paper industries in Pakistan are 30 25 35 20
9 At present the number of cement factories is Pakistan are 20 22 25 30
10 At present the number of fertilizers plants in Pakistan are 10 12 14 20
11 Which one is a nitrogen fertilizer Urea Calcium sulphate Potassium phospahte Magnesium carbonate
12 What element is not essential the growth of plants and is not required in the fertilizers Nitrogen Potassium Phosphorus Barium
13 When hydrogen cyanide is added to an Aldehyde in the presence of ammonia it is called Strecker synthesis Cory house synthesis Williamson;s synthesis None of these
14 It decolourises aqueous bromine rapidly It is insoluble in water It reduces Fehling's reagent Two molecules react with each other in the presence of a strong acid
15 What is the structure of the ester formed from propanoic acid and ethanol
16
17 Zwitter ion is ______ ion an amino acid Polar Monopular Dipolar Non polar
18 Ethanol in the presence of concentrated sulphuric acid Potassium hydroxide Sodium Sodium carbonate
19 Elimination Esterification Elimination Isomerisation Oxidation Exterification Oxidation Oxidation
20 di(4-bormophenyl) method Methanol Propan-1-ol Propan-2-ol
21
22 Which compound is both chiral and acidic
23 Acidified AgNO<sub>3(aq)</sub> Fehling's solution Na Na<sub>2</sub>XO<sub>3(aq)</sub>
24 A compound X has all of the following properties: It is a liquid at room temperature and atmospheric pressure; It does not mix completely with water; It does not decolorise acidified potassium manganate
What could X be
 Ethane Ethanoic acid Ethanol Ethyl ethanoate
25 RCH(CH<sub>3</sub>)CO<sub>2</sub>H + CH<sub>3</sub>OH RCH(CH<sub>3</sub>)CO<sub>2</sub>H + HCO<sub>2</sub>H RCH(CH<sub>3</sub>)OH + CO<sub>2</sub> RCH(CH<sub>3</sub>)OH + HCO<sub>2</sub>H
26 Step 1 Step 2<div>HCI HCN</div> HcN,NaCH H<sub>2</sub>SO<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> KCN HCI
27 Glutamic acid, aspartic acid are ______ amino acid Acidic Basic Neutral None of these
28 A peptide having molecular mass upto 10,000 is called a Vitamin Protein Polypeptide Dipetide
29 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
30 The acid present in vinegar is CH<sub>3</sub>COOH HCI H<sub>2</sub>SO<sub>4</sub> HCOOH
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