MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test With Answers

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MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Sr. # Questions Answers Choice
1 The force which hold the atoms together to form a compound is called: Dispersion forces London forces A chemical bond Ven der wall's forces
2 Which one of the following is an organic compound? Calcium carbide Calcium cyanide Carbon disulphide None of these 
3 The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal? Coal tar CO<sub>2</sub> Coal gas Coke
4 As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as: 10 isomers 3 isomers 5 isomers 6 isomers
5 Which of the following air pollutant is called quiet killer PAN CO NO<sub>3</sub> SO<sub>3</sub>
6 Sulphate aerosols cause severe respiratory problems particularly among Infants Women Young people Old people
7 Which of the following does not contribute towards the formation of photochemical smog? NO SO<sub>2</sub> O<sub>3</sub> Hydrocarbons
8 Which of the following substance is not present in acid rain? Sulphuric acid Nitric acid Sulphurous acid Acetic acid
9 Global warming is mainly caused by ______ radiations UV I.R gama X-rays
10 Amount of fresh water used by agriculture is 2% 23% 69% 97%
11 Ph of unpolluted rain water is 07 Less than 6 5.6 Less than 5
12 SO2 produced by volcanoes is about 75% 67% 69%<br> 70%
13 Heat balance of earth is maintained by Atmosphere Hydrosphere Lithosphere Stratosphere
14 Half of the mass of atmosphere is concentrated above earth at the hieght of 40 Km 25-28 Km 5-6 Km 100 Km
15 Pan is an irritant to human beings and it affects Eyes Nose Hair Skin
16 Coagulation in the purification of water is carried out by Alum NiSO<sub>4</sub> BaSO<sub>4</sub> CuSO<sub>4</sub>
17 How many times a newspaper can be recycled 02 05 08 10
18 Air pollution causes Acid rain O<sub>3</sub>&nbsp;depletion Green House Effect All
19 Dissolved impurities of potable water can be separated by the process of reduction Aeration Electrolysis Co-angulation
20 White marble buildings are effected by? O<sub>2</sub> SO<sub>2</sub> CI<sub>2</sub> CFC<sub>s</sub>
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