MDCAT Chemistry Online Test With Answers

MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Aldehydes are easily oxidized to corresponding carboxylic acids in the presence of: Strong oxidizing agents Highly strong oxidizing agents Tollen's reagent Tollen's reagent and Fehling solution
2 Primary alcohols and aldehydes are oxidized to corresponding: Alkanes Alkenes Alkynes Carboxylic acids
3 Which method is not used in preparation of acetic acid? Oxidation of ethane Hydrolysis of ethyl acetate Reaction of CO<sub>2</sub>with CH<sub>3</sub>MgX Oxidation of methane
4 Which method is used to prepare carboxylic acid? Hydrolysis of AI<sub>4</sub>C<sub>3</sub> Hydrolysis of CaC<sub>2</sub> Hydrolysis of alkyl nitrites Hydrolysis of alkenes
5 Carboxylic acid can be prepared from: Hydrolysis of alkyl nitrites Reaction of CO<sub>2</sub>with Gringard's reagent Hydrolysis of esters All of these
6 Carboxylic acids can be prepared from: Oxidation of alkane Oxidation of alcohols Oxidation of aldehydes All of these
7 CH3CH2COOH is also named as: Propionic acid Propanoic acid Acetic acid Both (a) &amp; (b)
8 Acetic acid is also named: Methanoic acid Ethanoic acid Propanoic acid Butanoic acid
9 Carboxylic acid is given name by replacing "a" of alkane by: "oic" acid "one" "al" "ol"
10 Formic acid is obtained from red out by: Distillation Crystallization Filtration Sublimation
11 Butyric acid was named from butyrum means: Red out Vinegar Butter Milk
12 Acetic acid is obtained from: Red out Vinegar Butter Milk
13 Formic acid is given name from Latin word a "formic" which means: Red out Vinegar Butter Milk
14 Common names of carboxylic acids are given by then: Source Person discovered Place Habit
15 Formula of stearic acid is: C<sub>11</sub>H<sub>23</sub>COOH C<sub>13</sub>H<sub>27</sub>COOH C<sub>15</sub>H<sub>31</sub>COOH C<sub>17</sub>H<sub>35</sub>COOH
16 Formula of paltimic acid is: C<sub>11</sub>H<sub>22</sub>COOH C<sub>13</sub>H<sub>27</sub>COOH C<sub>15</sub>H<sub>31</sub>COOH C<sub>17</sub>H<sub>35</sub>COOH
17 Palmitic acid & steanic acid are obtained from process of fats & oils: Reducing Neutralization Oxidation Hydrolysis
18 Fatty acids are: Aliphatic mono-carboxylic acids Di-carboxylic acids Tri-carboxylic acids Tetra carboxylic acids Poly carboxylic acids
19 Carboxylic acid having more than one carboxyl group are called: Mono-carboxylic acid Di-carboxylic acid Tri-carboxylic acid Poly carboxylic acid
20 Carboxylic acid having two carboxyl group are: Mono-carboxylic acid Di-carboxylic acid Tri-carboxylic acid Tetra carboxylic acid
21 Carboxylic acid having three carboxyl groups are: Mono carboxylic acid Di-carboxylic acid Tri-carboxylic acid Tetra carboxylic acid
22 Carboxylic acids having carboxyl group one is called: Mono carboxylic acid Di-carboxylic acid Teri-carboxylic acid Tetra carboxylic acid
23 General formula of aliphatic carboxylic acids: R-OH R-COH R-CO-R RCOOH
24 Aromatic carboxylic acids have corboxyl group attached to group: Alkyl group Aryl group Phenyl group Benzyl group
25 Nitrogen percentage in atmosphere is: 76% 77% 78% 79%
26 Atmosphere consists of gasses: N<sub>2</sub> O<sub>2</sub> Ar All
27 Region of earth capable of supporting life is called: Atmosphere Hydrosphere Lithosphere All of these
28 Rigid rocky crust earth upto a depth of 100 km is called: Atmosphere Hydrosphere Lithosphere All of these
29 Water bodies are included in: Atmosphere Hydrosphere Lithosphere All of these
30 The layer of gases around the earth are called? Atmosphere Hydrosphere Lithosphere All of these
31 What is component of environment? Atmosphere Hydrosphere Lithosphere All of these
32 The scope of environmental chemistry is to study: Source of chemicals Transportation of chemicals Transportation of toxic chemical All of these
33 The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is: Biochemistry Physical chemistry Pharmaceutical chemistry Environmental chemistry
34 Chemistry related to the study of environment affected by the chemicals and pollutants is called: Biochemistry Physically chemistry Pharmaceutical chemistry Environmental chemistry
35 The rigid rocky part of earth crust called lithosphere extends upto a depth of: 10 km 100 km 1000 km 1500 km
36 Components of environment is (in km) around the earth: 10 km 100 km 1000 km 1500 km
37 The layer of earth around the earth is called: Atmosphere Hydrosphere Lithosphere Biosphere
38 Nitrogen in the atmosphere is: 78% 21% 0.9% 0.03%
39 Reason of pollution are: Population and urbanization Transportation Industrialization All of these
40 Volcanoes produce SO2: 47% 57% 67% 77%
41 Coal contains sulphur in it: 1-3% 1-6% 1-9% 1-12%
42 Main cause of reducing map is: Combustion of coal NO and NO<sub>2</sub> Un-burnt hydrocarbons All of these
43 Unit of ozone is? Debye Dobson Esu Coulumb
44 Depletion of ozone is more during the month: Jan-March April-Jun July-Aug Sept-Nov
45 A single free chlorine redical can destroy ozone molecules upto: 100000 100 1000 10000
46 How much pesticides have been synthesized at present? Four thousand Six thousand Eight thousand Ten thousand
47 Forms of waste products: Heat Smoke Solid All of these
48 Contamination of water of tanning industries is due to: Cr(III) Cr(VI) Mn(III) Mn(VII)
49 Factors affecting quality of water: D.O BOD COD a,b,c
50 BOD is the oxygen demand with in day(s): Four Two Three Five
51 BOD is the oxygen demand with in day(s): Four Two Three Five
52 Water is purified by the process: Aeration Coagulation Chlorination All of these
53 Which is used as a coagulant: Ferric salts Potash alum a and b both Chlorine
54 Chloroform is carcinogenic: Heart Lungs Liver Kidney
55 Newspaper can be recycled again and again by how many times? 2 3 4 5
56 The temperature in the incineration process has a range: 900 to 1000<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 650 to 1100<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 950 to 1300<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span> 500 to 900<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°C</span>
57 In purification of potable water the coagulant used is: Nickel sulphate Copper sulphate Barium sulphate Aluminium sulphate
58 The main pollutant of leather in the waste water is due to the salt of: Lead Chromium (VI) Copper Chromium (III)
59 DDT is a: Fungicide Insecticide Herbicide All
60 Fungicides are the pesticides which: Control the growth of fungus Kills insects Kills plants Kill herb
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