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 Smaller unit of biosphere is: specie ecosystem plankton troposphere
2 Elements in lithosphere exist generally as: metals non-metals metalloids minerals
3 Eleven elements made part of earth mass: 97.5% 98.5% 99.5% 100%
4 Lithosphere extends upto kilometer of earth crust in depth: 10 km 100 km 1000 km 10000 km
5 Part of fresh water consumed in domestic purpose: 1% 2% 69% 8%
6 Part of fresh water consumed in industry is: 1% 2% 69% 23%
7 Agriculture consumes part of fresh water: 1% 2% 69% 23%
8 Fresh water of total earth water is: 1% 2% 3% 4%
9 Polar ice caps and glaciers consists total earth water: 1% 2% 3% 4%
10 Ocean contains part earth's water: 95% 96% 97% 98%
11 Hydrosphere covers the surface of erath: 70.8% 71.8% 72.8% 73.8%
12 Heat balance of earth is maintained by sphere: Hydrosphere atmosphers lithosphere biosphere
13 Nitrogen percentage in atmosphere is: 76% 77% 78% 79%
14 Atmosphere consists of gasses: N<sub>2</sub> O<sub>2</sub> Ar All
15 Region of earth capable of supporting life is called: Atmosphere Hydrosphere Lithosphere All of these
16 Rigid rocky crust earth upto a depth of 100 km is called: Atmosphere Hydrosphere Lithosphere All of these
17 Water bodies are included in: Atmosphere Hydrosphere Lithosphere All of these
18 The layer of gases around the earth are called? Atmosphere Hydrosphere Lithosphere All of these
19 What is component of environment? Atmosphere Hydrosphere Lithosphere All of these
20 The scope of environmental chemistry is to study: Source of chemicals Transportation of chemicals Transportation of toxic chemical All of these
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