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Environmental Chemistry
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Environmental Chemistry
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25 Questions

1. Solution of 0.1 NNH 4OH and 0.1 NNH 4Cl haspH 9.25Then find out pK b of NH 4OH
2. The pH value of blood does not appreciablychange by a small addition of an acid or a base - because the blood
3. Which one of the following statement is nottrue? [2011]
4. Which of the following is/are the hazardouspollutant present in automobile exhaust gases?N 2 (ii) CO(iii) CH4 (iv) Oxides of nitrogen [1996]
5. Which one of the following statements is not true? [2013]
6. The greenhouse effect is because of the[1996]
7. What is the H + ion concentration of asolution prepared by dissolving 4 g ofNaOH(Atomic weight of Na = 23 amu) in 1000ml?
8. Equimolar solutions of the following were prepared in water separately. Which one of thesolutions will record the highest pH?
9. Solubility of a M2S salt is 3.5 × 10 -“6 - then itssolubility product will be
10. Aqueous solution of acetic acid contains
11. Buffer solutions have constant acidity andalkalinity because
12. Green chemistry means such reactions which:[2008]
13. Which of these is least likely to act as Lewisbase?
14. Which one of the following statements regarding photochemical smog is not correct?[2012]
15. In which of the following solvents - AgBr willhave the highest solubility?
16. Which one of the following molecularhydrides acts as a Lewis acid?
17. The compound whose aqueous solution has the highest pH is
18. Equal volumes of three acid solutions of pH 3 - 4 and 5 are mixed in a vesselWhat will be theH+ ion concentration in the mixture?
19. 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
20. Which of the following pairs constitutes abuffer?
21. The solubility product of a sparingly solublesalt BA2 is 4 × 10-“12The solubility of BA 2 is
22. Identify the correct order of solubility inaqueous medium:
23. In which of the following the solubility of AgClwill be maximum?
24. The pH value of a 10 M solution of HCl is
25. Which has the highest value of pH?

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