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Environmental Chemistry
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Environmental Chemistry
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25 Questions

1. H2S gas when passed through a solution ofcations containing HCl precipitates the cations ofsecond group of qualitative analysis but notthose belonging to the fourth groupIt isbecause
2. Which of the following pairs constitutes abuffer?
3. The ionization constant of ammoniumhydroxide is 1.77 × 10 -“5 at 298 KHydrolysisconstant of ammonium chloride is:
4. The greenhouse effect is because of the[1996]
5. Equimolar solutions of the following substances were prepared separately. Whichone of these will record the highest pHvalue?
6. Which one of the following molecularhydrides acts as a Lewis acid?
7. Which of these is least likely to act as Lewisbase?
8. Which one of the following statements regarding photochemical smog is not correct?[2012]
9. Aqueous solution of acetic acid contains
10. Among boron trifluoride - stannic chlorideand stannous chloride - Lewis acid is representedby
11. The compound whose aqueous solution has the highest pH is
12. Which of the following is/are the hazardouspollutant present in automobile exhaust gases?N 2 (ii) CO(iii) CH4 (iv) Oxides of nitrogen [1996]
13. Solubility of a M2S salt is 3.5 × 10 -“6 - then itssolubility product will be
14. The pH value of blood does not appreciablychange by a small addition of an acid or a base - because the blood
15. Which of the following molecules acts as aLewis acid?
16. Solubility of MX2 -type eletrolytes is 0.5 ×10-“4 mole/lit - then find out K sp of electrolytes
17. In which of the following solvents - AgBr willhave the highest solubility?
18. Identify the correct order of solubility inaqueous medium:
19. 0.1 M solution of which one of thesesubstances will be basic?
20. In which of the following the solubility of AgClwill be maximum?
21. Which one of the following statements is not true? [2013]
22. Which one of the following compounds isnot a protonic acid?
23. A base when dissolved in water yields asolution with a hydroxyl ion concentration of 0.05 mol litre -1 The solution is
24. Which of the following is least likely to behave as Lewis base?
25. Which one of the following information can beobtained on the basis of Le Chatelier principle?

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