MDCAT Chemistry Online Test With Answers

MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 The process of coagulation can remove suspended solids in raw water about 50% 60% Less than 40% More than 80%
2 Elevated concentration of ______________ is harmful for fish as it clog the gills causing suffocation AI Hg As Cr(vi)
3 CFCs are mainly used in industries due to Low cost Gaseous nature High reactivity Un stability
4 99.5% mass of lithosphere is made of 03 elements 8 elements 11 elements 15 elements
5 What change in plants indicates toxic effect of SO2 Weathering of leaves Darkening of leaves Falling of leaves Bleaching of leaves
6 An excellent source of energy without causing pollution is Fossil fuel Sun Petroleum Nuclear reactor
7 Hydrosphere includes Seas and rivers Ocean & polar ice caps Ground water All of above
8 Which is not considered as pollutant O<sub>3</sub> CO<sub>2</sub> NO<sub>2</sub> SO<sub>2</sub>
9 Most harmful of biosphere is Deforestation Nuclear fail out Salinity Water logging
10 Exhaust fumes of cars contain which poisonous gas CH<sub>4</sub> C<sub>2</sub>H<sub>6</sub> CO All of these
11 Chlorination of water is effective for Killing pathogens Removing dust Removing hardness Increasing oxygen content
12 It is a biodegradable pollutant Salts of HG DDt Aluminum foil Domestic fuel
13 Biological oxygen demand (BOD) is associated with Organic matter Micro organisms Both a and b None
14 Detergents are surfactants and they reduce the B.P. of water Surface tension of water Wetting ability of water None of these
15 Which of following is primary pollutants N<sub>2</sub>O PAN H<sub>2</sub>SO<sub>4</sub> None of these
16 Which is not an air pollutant N<sub>2</sub> CO NO N<sub>2</sub>O
17 Polar ice caps can melt due to Acid rain Green House Effect Smog Chlorofluorocarbons
18 Ozone layer is present in Troposphere Stratosphere Mesosphere Ionosphere
19 Test of incomplete combustion of petrol in the presence of CO<sub>2</sub> SO<sub>2</sub> NO<sub>2</sub> Co
20 Organic pollutants in water are measured by DO COD Water logging PH
21 Which of the following statement is not correct for glycogen It is main storage of carbohydrates It structure does not resemble Amylopectin It has 1&nbsp;→ 4 and 1&nbsp;→ 6 glycosidic linkage On hydrolysis it yields glucose units
22 Amount of cellulose produced by plants every year is _____ approximately 100 billion tons 90billion tons 80&nbsp;billion tons 70&nbsp;billion tons
23 The charring of glucose when it is heated with conc.H2SO4 is due to Oxidation Reduction Dehydration Dehydrogenation
24 The helical structure of protein is stabilized by Peptide bond Covalent Hydrogen bond Glycoside bond
25 Zwitterion is formed by Lysine Benzoic acid Aniline Acetamide
26 Which of the following statement about ribose is incorrect Poly hydroxyl compound It is an aldo sugar Contain six carbon atoms It exhibit optical activity
27 To become a carbohydrate a compound must contain 2-carbon 3-carbon 4-carbon 5-carbon
28 Amylose and Amylopectin are two fraction of starch which of them gives violet colour with I2 Amloase only Amylopectin only Both amlose &amp; amylpectin None of thses
29 Which of the following is obtained by the hydrolysis of starch in the presence of diastase enzyme Lactose Maltose Sucrose All of them
30 Which of the following is sweetest sugar Glucose Maltose Fructose Sucrose
31 Identify the linear polymer out of following Amylose Amylopectin Starch Glycogen
32 Carbohydrate that cannot be digested by human digestive system is Cellulose Glycogen Starch All of these
33 Cane sugar on hydrolysis gives Glucose+Glucose Glucose+Fruclose Glucose+Galactose Glucose+Gacatose
34 Optimum PH for enzyme pepsin is 01 2 05 6.5
35 Steroids belong to the class Waxes Glycosides Phospholipids Lipids
36 Which of the following does not obey general formulas of monosaccharide Mannose Fructose Glucose Deoxyribose
37 Water soluble component of starch is Amylose Amylopectin Both Cellulose
38 α and β Glucose differs in orientation of hydroxyl group around C<sub>1</sub> C<sub>2</sub> C<sub>3</sub> C<sub>4</sub>
39 Which of the following is synthetic thermoplastic polymer PVC Bakelite Synthetic varnishes Both b &amp; c
40 Amylum is another name of Starch Amylose Amylopectin Cellulose
41 RNA regulate the synthesis of Vitamis Carbohydrate Proteins Lipids
42 Nucleic acid contain elements like N,H,O,C and Ca S P F
43 Polysaccharides are Polyester Polyamides Poly ethers Polynucleotide
44 Amides are Strongly basic Weakly basic Acidic Strongly
45 Classification of polymerization into two types was suggested by W.H Carothers Staudinger OSwald Aspdin
46 Which one of the following is co-polymer PVC PVA Polystyrene Terylene
47 Which of the following is not glyceride Soap Phospholipids Oil Fat
48 Industrial materials and thermal power stations are coated by PVC Polyester Epoxy resin PVA
49 Which of the following is incorrect for glucose & sucrose Both are water solube Natural polymers Source of energy Carbohydrate in nature
50 Which of these is a synthetic polymer Polypeptide Cellulose Polyester Starch
51 Optimum temperature for enzyme activity is 125°C 37°C 40°C 100°C
52 Which of the following is not macromolecule? Proteins Carbohydrates Acrylonitirle Lipids
53 Cholesterol is an important precursor in the biosynthesis of Adrenal hormones Sex hormones Vitamin-D All of these
54 Cellulose is the polymer of α-D-glucose β-D-glucose Fructose None
55 Glucose and gulose are ____ for each other Geometrical isomers Metamers Apimers None
56 Irreversible precipitation of protein caused by heating is called Polymerization Denaturing Inversion Co-angular
57 Proteins are the polymers of amino acids having NH<sub>2</sub> group only OH<sup>-&nbsp;</sup>group only NH<sub>2 </sub>and<sub> </sub>OH<sup>-</sup> group NH<sub>2 </sub>and COOH group
58 Which of the following represents peptide linkage -C=N- -CO-NH- -CH<sub>2</sub>-NH- -CH-NH-
59 The element which is not present in all proteins is C H O S
60 A peptide having molecular mass of more than 10,000 is called as Fat Vitamin Carbohydrate Proteins
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