ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Cellulose does: Satisfy human appetite Stimulates intestinal peristalsis Gives fibre and bulk to the food All of these
2 The higher molecular weight materials which yield on hydrolysis the amino acids is called: Carbohydrates Lipids Fatty acids Proteins
3 Factors affecting denaturation of proteins: Change in temp and pH Strong reducing agent Strong oxidizing agent All of these
4 Major food factors are: Fats and oils Carbohydrates Proteins All of these
5 Which is the derived lipid? Common fats Vitamin-D Common oils Spinolipids
6 Which property is not present in lipids? Liquid Solid or semi solid Soluble in water Form emulsion
7 An oil or fat with no double bond have iodine number: Zero 100% 50% minimum
8 The steroids of fungi and yeast are called: Vitamin D Vitamin D<sub>2</sub> Ergosterol Cholestorl
9 Which behaves ass insulator for animals body? Carbohydrates Protiens Fats skin
10 Which one of the following statements about glucose and sucrose is incorrect? Both are soluble in water Both are naturally occuring Both are carbohydrates Both are disaccharides
11 The reaction between fat and NaOH is called: Esterification Hydrogenolysis Fermentation Sponification
12 Which one of the following enzymes brings about the hydrolysis of fats? Urease Maltase Zymase Lypase
13 Which one of the following is a water soluble vitamin? Naacin Riboflavin Trypsin Ascorbic acid
14 Which one of the following elements is not present in all proteins? Carbon Hydrogen Nitrogen Sulphur
15 Vegetables oil are: Unsaturated fatty acids Glycerides of saturated fatty acids Essential oils obtained from plants None of these
16 A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called: Fibre Plastic Vanish Polyamide resin
17 The fibre which is made from acrylonitrile as monomer: PVC Rayon fibre Acrylic fibre Polyester fibre
18 Plastics are a pollution problem because many plastics: Are made from petroleum Are very inflammable Burn to produce toxic fumes Decompose to produce toxic products
19 Which of these polymers is a synthetic polymer? Animal fat Starch Cellulose Polyester
20 Which of these polymers is an addition polymer? Nylon-6,6 Polystyrene Terylene Epoxy resin
21 Inn which of these processes are small organic molecules made into macromolecules? The cracking of petroleum fractions The fractional distilation of crude oil the polymerization of ethane The hydrolysis of proteins
22 Chemistry related to the study of environment affected by the chemicals and pollutants is called: Biochemistry Physical chemistry Pharmaceutical chemistry Environmental chemistry
23 The rigid rocket part of earth crust called lithosphere extends upto a depth of: 10 km 100 km 1000 km 1500 km
24 Atmosphere thickness is (in km) around the earth: 10 km 100 km 1000 km 1500 km
25 Components of environment are: Atmosphere Hydrosphere Lithosphere All of these
26 Reason of pollution are: Population and Urbanization Transportation Urbanization industrialization All of these
27 Nitrogen in the atmosphere is: 78% 21% 0.9% 0.03%
28 Volcanoes produce SO2: 47% 57% 67% 77%
29 Coal contains sulphur in it : 1 - 3% 1 - 6% 1 - 9 % 1 - 12%
30 Main cause of reducing map is: Combustion of coal NO and NO<sub>2</sub> Un-Burnt Hydrocarbons All of these
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