MDCAT Chemistry Online Test With Answers

MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 How is the secondary structure of protein stabilized Through hydrogen bonding Through ionic bonding Through van der wall forces Through covalent bonding
2 The protein which only yield amino acids and their derivatives Simple proteins Complex proteins Derived protein All of these
3 When a nitrogeneous base combine with a sugar it is called Ribose Nucleotides Nucleoside None
4 Which is the polymer that has amide linkage in its structure PVC Poly ethene Polyester Nylon
5 Oxidation reduction is done by Oxidoreductase Lipases Lyase None of these
6 Protein may have Primary structure Secondary structure Tertiary structure All of these
7 Sterols, vitamin D and terpenese belong to Simple lipids Complex lipids Derived lipids None
8 The clotting time of blood is increased due to the deficiency of vitamin A vitamin K vitamin D vitamin C
9 Ricket is caused due to the deficiency of vitamin A D B E
10 What is the most common catalyst used in hydrogenation of oils? cobalt nickel tungsten copper
11 betta-D-glucose is a monomer for Starch Cellulose Glycogen Protein
12 Which one of the following is a disaccharide? glucose sucrose fructose starch
13 Monosaccharides belong to the group lipids fats proteins carbohydrates
14 Vegetable oil are unsaturated fatty acids glycerides of unsaturated fatty acids glycerides of saturated fatty acids essential oil obtained from plants
15 The fibre which is made form acrylonitrile as monomer PVC rayon fibre acrylic fibre polyester fibre
16 Purines include Adenine Guanine Both a and b None
17 Enzymes are chemically carbohydrates proteins fatty acids phospholipids
18 Which is not an enzyme Transverses Lipase Lyase None of these
19 (CH2O)nis general formula for Monosacchardies Oligosaccharides Polysaccharides None of these
20 Which of the following is the repeating monomeric unit in cellulose? sucrose maltose cellobiose glucose
21 Substances that render enzymes catalytically inactive are called coenzymes substrates inhibitors apoezymes
22 Cotton is __________ % cellulose 90 100 99 30
23 Polysaccharides are also called Crystals Sugars Liquids Non Sugars
24 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 if 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
25 Which of the following brings about the conversion of starch into maltose? maltase zymase diastase invertase
26 Which one of the following is the most abundant organic substance found in nature? fructose starch glucose cellulose
27 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
28 Protein are classified into Simple protein Complex proteins Derived proteins All of these
29 The three dimensional folding and twisting of a polypeptide chain give rise to Primary structure Secondary structure Tertiary Structure All of these tertiary
30 Which of the following is a steroid? vitamin A vitamin B vitamin C vitamin D
31 Activity of the enzyme is reduced by temperature concentration pH inhibitors
32 The substance upon which an enzyme acts is known as its domain field substrate reactant
33
For every reaction occurring in the body three is at least one type of
 enzyme vitamin protein reactant
34 Glycogen is stored in Animals Plants Soil None of these
35 The development of disagreeable odour in fats or oil is called fragrance perfume rancidity smell
36 The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grams of fat, this is called oil number saturation number iodine number un saturation number
37 Enzymes are catalysts which contain other than carbon and hydrogen one other element oxygen sulphur phosphorus iodine
38 Monosaccharides adn oligosacchardies are generally called as Crystal Sugars liquids Non-sugars
39 Which one of the following enzymes brings about the hydrolysis of fats? urease maltase zymase lypase
40 Which one of the following is a water soluble vitamin? niacin riboflavin tyrosine ascorbic acid
41 Which one of the following elements is not present in all proteins? carbon hydrogen nitrogen sulphur
42 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
43 A fibre which is made from acrylonitrile as monomer PVC rayon fibre acrylic fibre polyester fibre
44 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
45 Which of these polymers is a synthetic polymer? animal fat starch cellulose polyester
46 Which of these polymers is an addition polymer? nylon 6,6 polystyrene terylene epoxy resin
47 The polymers which can not be re-softened again and again are called Thermoplastic Thermosetting Both a and b None
48 Which is not a steroid Cholesterol Ergosterol Phospholipids None of these
49 A fat or oil is characterised for extent of unsaturation by one of the following number,which one rancidity number acid number iodine number saponicfication number
50 Naturally occuring lipids are called Fats Protein Steroids None
51 Denaturation of protein means the structure of protein is distrupted. indicate which factor does not denature protein heating protein pH changes oxidising agent keeping pH 7.35
52 The temp and pressure used for PVC polymerization is 10<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 10 atm</span> 20<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 20 atm</span> 52<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 9 atm</span> 100<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 10 atm</span>
53 Which of the following polymers is used for weather resistant paints acrylic resins polyvinyl acetate polystyrene PVC
54 Nylon, 6,6 is a condensation polymer of adipic acid and glycol phthalic acid and glycol adipic acid and hexaethylene diamine phthalic acid and hexaethylene diamine
55 Which polymerization is free radical mechanism based Addition Condensation Both a and b None
56 The polymers which can be re-softened again and again are called Thermoplastic Thermosetting Both a and b None
57 One of the following is not type of polymer homopolymer copolymer heteropolymer terpolymer
58 The temp. and pressure used for PVC polymerization is 10<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 10 atm</span> 20<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 20 atm</span> 52<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 9 atm</span> 100<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C and 10 atm</span>
59 The other name for cross linked polymers is Linear polymer Branched polymers Inter connected polymers None of these
60 organic synthetic or man made polymers are plastics, rubber and fibre, Which is not a synthetic polymer silk polyester polyvinyl chloride (PVC) nylon
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