ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Molar mass of high molecular w.f. polymers ranges from: 1000 to 10000 10000 to 100000 100000 to 1000000 1000 to 100000000
2 The simplest separating unit of a polymer is called: Monomer Dimer Trimmer Macromer
3 Poly hydroxyl compounds of aldehyde and ketones are: Carbohydrates Proteins Fats Lipids
4 Simple sugars are : Monosaccharides Disaccharides Oligo saccharides Trisaccharides
5 Cotton has cellulose in it: 96% 97% 98% 99%
6 Cellulose does: Satisfy human appetite Stimulates intestinal peristalsis Gives fibre and bulk to the food All of these
7 The high molecular weight materials which yield on hydrolysis the amino acids is called: Carbohydrates Lipids Fatty acids Proteins
8 Factors affecting denaturation of proteins: Change in temp and pH Strong reducing agent Strong oxidizing agent All of these
9 Major food factors are: Fats and oils Carbohydrates Protiens All of these
10 Which is the derived lipid? Common fats Vitamin-D Common oils Spinolipids
11 Which property is not present in lipids? Liquid Solid or semi solid Soluble in water Form emultion
12 An oil or fat with no double bond have iodine number: Zero 100% 50% Minimum
13 The stroids of fungi and yeast and yeast are called: Vitamin D Vitamin D<sub>2</sub> Ergostrol Cholestrol
14 Which behaves as insulator for animals body? Carbohydrates Proteins Fats Skin
15 Which one of the following statements of glucose and sucrose is incorrect? Both are soluble in water Both are naturally occuring Both are carbohydrates Both are disaccharides
16 The reaction between fat and NaOH is called: Esterification Hydrogenolysis Fermentation Sponification
17 Which of the following enzymes brings about the hydrolysis of fats? Urease Maltase Zymase Lypase
18 Which of the following is a water soluble vetamin? Niacin Riboflavin Trypsin Ascorbic acid
19 Which of the following elements is not present in all proteins? Carbon Hydrogen Nitrogen Sulphur
20 Vegetables oils are: Unsaturated fatty acids Glycerides of unsaturated fatty acids Essential oils obtained form plants None of these
21 A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a: Fiber Plastic Vanish Polyamide resin
22 The fiber which is made from acrylonitrile as monomer: PVC Rayon Fiber Acrylic fiber Polyester fiber
23 Plastics are pollution problem because many plastics: Are made from petroleleum Are very inflammable Burn to produce toxic funes Decompose to produce toxic products
24 Which of these polymers is a synthetic polymer? Animal fat Starch Cellulose Polyester
25 Which of these polymers is an addition polymer? Nylon-6,6 Polystrene Terylene Epoxy resin
26 In which of these processes are smell organic molecules made into macromolecules? The cracking of petroleum fractions The fractional distillation of crude oil The polymerization of ethane The hydrolysis of proteins
27 Carboxylic acids having carboxyl group one is called: Mono carboxylic acid Di-carboboxylic acid Tri carboxilic acid Tetra carboxylic acid
28 General formula of aliphatic carboxylic acids: R---OH R----COH R----CO---R RCOOH
29 Aromatic carboxylic acids have carboxyl group attached to group : Alkyl group Aryl group Phenyl group Benzyl group
30 Aliphatic carboxylic acids have carboxyl group attached to: Alkyl group Aryl group Phenyl group Benzyl lgroup
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