ECAT Chemistry Chapter 25 Macromolecules Online Test With Answers

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ECAT Chemistry Chapter 25 Macromolecules Online Test

Sr. # Questions Answers Choice
1 Monosaccharides are Aldoses Ketoses Either a and b None of these
2 Substances that render enzymes catalytically inactive are called Conenzymes Substrates Inhibitors Apoezymes
3 Cotton is ______% cellulose 90 100 99 30
4 Polysaccharides are also called Crystals Sugars Liquids None sugars
5 Iodine value of an oil or fat may be defined as The number of grams of iodine taken up by 1 g of the oil or fat The number of grams of iodine taken by 10 g of the oil or fat The number of grams of iodine taken by 100 g of the oil or fat None of the above
6 Which of the following brings about the conversion of starch into maltose Maltase Zymase Diatase Invertase
7 Which one of the following is the most abundant organic substance found in nature Fructose Starch Glucose Cellulose
8 Which of the following statements is incorrect about vitamins Often function as coenzymes Molecules contain at least one ring structure Are often synthesized by the body Are polyfunctional compounds
9 Protein are classified into Simple protein Complex protein Derived proteins All of these
10 The three dimensional folding and twisting of a polypeptide chain give rise to Primary structure Secondary structure Tertiary structure All of these tertiary
11 Which of the following is a steroid Vitamin A Vitamin B Vitamin C Vitamin D
12 Activity of the enzyme is reduced by Temperature Concentration pH Inhibitors
13 The substance upon which an enzyme acts is known as its Domain Field Substrate Reactant
14 For every reaction occurring in the body three is at least one type of Enzyme Vitamin Protein Amino acid
15 Glycogen is stored in Animals Plants Soil None of these
16 The development of disagreeable odur in fats or oil is called Fragrance Perfume Rancidity Smell
17 The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grmas of fat, this is called Oil number Saturation number Iodine number Un saturation number
18 Enzymes are catalysts which contain other than carbon and hydrogen one other element Oxygen Sulphur Phosphorus Iodine
19 Monosaccharides and oligosacchradies are generally called as Crystals Sugars Liquids Non-sugars
20 The reaction between fat and NaOH is called Esterification Hydrogenolysis Fermentation Saponification
21 Which one of the following enzymes brings about the hydrolysis of fats Urease Maltase Zymase Lypase
22 Which one of the following is a water soluble vitamin Niacin Riboflavin Tyrosine Ascorbic acid
23 Which one of the following elements is not present in all proteins Carbon Hydrogen Nitrogen Sulphur
24 Vegetable oils are Unsaturated fatty acids Glycerides of unsaturated fatty acids Glycerides of saturated fatty acids Essential oils obtained from plants
25 A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a Fibre Plastic Varnish Polyamide resin
26 A fibre which is made from acrylonitrile as monomer PVC Rayon fibre Acrylic fibre Polyester fibre
27 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
28 Which of these polymers is a synthetic polymer Animal fat Starch Cellulose Polyester
29 Which of these polymers is an addition polymer Nylon 6,6 Polystyrene Terylene Epoxy resin
30 The polymers which can not be re-softened again and again are called Thermoplastic Thermosetting Both a and b None
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