Direction Enviro 2016 nces ns: Select the best choice Chemistry and Analysis 1.

Question

Direction Enviro 2016 nces ns: Select the best choice Chemistry and Analysis 1. of answer from the follo ing 100 A homogenous and place the lett of choice on the a), solute, b). solution, c). composed of two or more substances is commonly referred to as d). mixture liquid solubi ity, e). none ofthe abov 3. or gas that dissolve a solid, liquid, or gaseous solute is commonly referred to as is A substance dissolved in another substance, usually the component of a solution present in the lesser amount commonly referred to as a). solute, b). solution, c). solvent, d). conductivity, e). none of above the 4. The number of moles of a given substance per liter of solution is commonly referred to as the abov none of gram equivalent of solute per liter of solution is commonly referred to as normal, b). molar, c), molal, d), solute, e). none of the above 6. The tendency of chemical sp to acquire electrons and thereby be reduced is commonly referred to as a). oxidation potential solubility, c), redox Potential, d) partial pressure, e). none of the abov 7. Any chemical compound that, when dissolved in water, gives a solution with a hydrogen ion activity greater than in pure water is commonly referred to as a), acid, b), base, c). normal, d). molar, e). none of the above 8. The lowest layer ofthe atmosphere; it begins at the surface and extends to between 7 km (23,000 ft) at the to and km ft) with riation due to weather factors is commonly referred phere, e). none of the above a). thermosphere, b), mesosphere, c). Toposphere, d). exos 9. The atmospheric layer situated between about 10 km (6 miles) and 50 km (31 altitude above surface at moderate latitudes, while at the poles it starts at about 8 km (5 miles) altitude is commonly referr a). mesosphere, b). tosphere, c). stratosphere, d) exosphere, e). none of the above 10. In a electromagnetic spectrum which ofthe following light has the shortest wavelength a) yellow, b. red, c). violet, d). orange, e). none of the above 11. In a electromagnetic spectrum which of the following light has the longest wave length a), violet, b) indigo, c), red, d). yellow, e). none of the above 12. Which of the following is not a greenhouse gas? the above methane, b) carbon dioxide gas, c). nitrous oxide, d). mustard gas, e). none of 3. Which of the following statement is FALSE? pollutants, b). human are nature has ways of breaking down and/or recycling natural air pollutants produced by ollutants far in excess of what is produced by nature, c). none of the

Explanation / Answer

1. solution

2. Solvent

3. Solute

4. Molar concentration

5. Normality

6. Redox potential

7. Acid

8. None of the above (Because the real answer is Trposphere)

9. Stratosphere

10. Violet

11. Red

12. Mustard gas

13. Option C is correct

14. Option D is correct

15. Ozone

16. Option D is correct ( O3 is produced by splitting and recombination of free oxygen atoms)

17. Radon

18. Methane

19. pF

20. Gamma rays

21. Alpha particle

22. Alpha particle

23. X-rays

24. 33%,SO2

25. 33%,SO2

26.Fluidized bed combution

27.Subbituminous

28. Colloid

29. Curie

30. Yellow boy

31. Non specific source waste

32. Specific source waste

33. Green chemistry

34.

35.

36. Refractometers

37. Option D is right one

38.

39.

40. Option D is correct option

41. Adsorption

42. Desorption

43. Adsorption

44. Organic compound

45. Inorganic compound

46.

47. Synthetic compound

48. Chelation

49. Ligand

50. Radicals

Sorry to say time is not sufficient, please send next questions in separate sheets.

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