MDCAT Chemistry Online Test With Answers

MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Ozone layer is high: 20-23 km 22-25 km 23-26 km 25-28 km
2 The normal amount of overhead ozone is about in DU: 150 250 350 450
3 Amount of ozone in atmosphere is expressed in units: Kilograms cm molarity DU
4 Ozone gas has boiling point: Low High Medium Highest
5 Photochemical smog consists of higher concentration of: Oxidants Ozone a &amp; b NO<sub>3</sub>
6 The words smog is a combination of smoke and: fog foke fork fizzy
7 The eleventh concentration of metal cause clogs of gills in fish: Al He Pb Ca
8 Acidification of soil can leach metal: Al Hg Pb Ca
9 Phenomenon of acid rains gain importance in: 1930s 1940s 1950s 1960s
10 Augus smith discovered in the mid of seventeenth century: acid Base Acid rain Fertilizer
11 Men residence time of methane in atmosphere in years is: 1-7 2-7 3-7 4-7
12 Oxides of sulphur react in atmosphere by various reactions to form: sulphates sulphites sulphides sulphate aerosols
13 Coal contains percentage of sulphur: 1-9% 5-9% 6-9% 7-9%
14 The percentage of SO2 produced by volcanoes is: 47% 57% 67% 77%
15 Poisoning of CO can be reveresed by giving oxygen at pressure: low least medium High
16 Transportation causes to produce CO2 in atmosphere: 72% 73% 74% 75%
17 Which is property of CO? Soluble in water Insoluble in water No toxic Pole coloured
18 Carbon Monoxide is: colouriess orderless high toxic All of these
19 Primary pollutants are: oxides of sulphur oxides of carbon oxides of nitrogen All of these
20 Which gas produces air pollution? oxides of sulphur oxides of carbon all of these
21 Smaller unit of biosphere is: specie ecosystem plankton troposphere
22 Elements in lithosphere exist generally as: metals non-metals metalloids minerals
23 Eleven elements made part of earth mass: 97.5% 98.5% 99.5% 100%
24 Lithosphere extends upto kilometer of earth crust in depth: 10 km 100 km 1000 km 10000 km
25 Part of fresh water consumed in domestic purpose: 1% 2% 69% 8%
26 Part of fresh water consumed in industry is: 1% 2% 69% 23%
27 Agriculture consumes part of fresh water: 1% 2% 69% 23%
28 Fresh water of total earth water is: 1% 2% 3% 4%
29 Polar ice caps and glaciers consists total earth water: 1% 2% 3% 4%
30 Ocean contains part earth's water: 95% 96% 97% 98%
31 Hydrosphere covers the surface of erath: 70.8% 71.8% 72.8% 73.8%
32 Heat balance of earth is maintained by sphere: Hydrosphere atmosphers lithosphere biosphere
33 Polymerisation of vinyl acetate is a type of: homopolymer copolymer ter polymer All of these
34 Type of polymer formed by the polymerization of two monomers is: homopolymer copolymer ter polymer All of these
35 Type of polymer formed by teh polymerization of single type of monomer is: Homopolymer Copolymer terpolymer All of these
36 Polymers class is: homopolymer copolymer ter polymer All of these
37 Most of high molecular mass polymers, used to make plastic rubbers or fibers have molecular masses between: 1000-10000 1000-100000 10000-100000 10000-1000000
38 Molar mass of repeating unit of PVC monomer is: 43 53 63 73
39 A polymer of PVC having D.P 500 has molar mass: 6300 63000 3150 31500
40 A polymer of polyvinyl chloride with DP 1000 has molecular or molar mass: 630 6300 63000 630000
41 The product of the molecular mass of repeating units and the D.P is called of polymer: Molecular formula Empirical formula Molecular mass Empirical mass
42 Which is inorganic polymer? Plastic Rubber synthetic fiber Lipids
43 Which is biopolymer? Plastic Rubber synthetic fiber Lipid
44 Plastic, rubber, synthetic fibers belong to macromolecules: Inorganic organic Biopolymer synthetic
45 Lipids, proteins, carbohydrates and nucleic acids belong to macromolecules: inorganic organic Biopolymer synthetic
46 Diamond, graphite and sand grant molecules are belonged to: Inorganic Organic biopolymer <div>synthetic</div>
47 Macromolecules are classified: inorganic organic biopolymer synthetic
48 The word polymer is derived from words poly mean many and mer means unit. Latin Greek English French
49 For better or worst we are living in society: wood food diseased plastic
50 Large molecule formed by combination of smaller units these smaller units are called: Polymers Macromolecule Micromolecule a &amp; b
51 Large molecules with high molecular mass formed due to smaller units ae called: polymer macromolecule micromolecule a &amp; b
52 Acceptance of macromolecular hypothesis was due to efforts of: Kekule Gibbs Standiger anderson
53 Macromolecular hypothesis acceptance due to efforts of standinger came about in: 1910 1920 1930 1940
54 Tasteless sugars are: monosaccharides trisaccharides oligo saccharides poly saccharides
55 A combination of glucose and fructose is called sucrose table sugar a &amp; b Lactose
56 Which process of ester will yield carboxylic acid? Hydration Hydrolysis Oxidation Reduction
57 Carboxylic acid can be prepared from the reaction of Grigard's reagent with: Aldehydes Ketones Formaldehyde CO<sub>2</sub>
58 Always carboxylic acid produced will have number of carbon atoms from carbon atom in alkyl nitriles: One more Two more Equal &amp; same One less
59 Reaction of alkyl halides with potassium cyanide in the presence of alcohols give: Carboxylic acids Aldehydess Alkyl nitriles Acid amides
60 Hydrolysis of alkyl nitriles gives: Alkane Alkyl halide Alkyl nitride Minerals acids &amp; Alkalies
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