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Environmental Chemistry
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Environmental Chemistry
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25 Questions

1. The greenhouse effect is because of the[1996]
2. Which one of the following statements regarding photochemical smog is not correct?[2012]
3. Which one of the following molecularhydrides acts as a Lewis acid?
4. Solubility of a M2S salt is 3.5 × 10 -“6 - then itssolubility product will be
5. In which of the following solvents - AgBr willhave the highest solubility?
6. Buffer solutions have constant acidity andalkalinity because
7. Green chemistry means such reactions which:[2008]
8. Which one of the following information can beobtained on the basis of Le Chatelier principle?
9. 0.1 M solution of which one of thesesubstances will be basic?
10. The ionization constant of ammoniumhydroxide is 1.77 × 10 -“5 at 298 KHydrolysisconstant of ammonium chloride is:
11. What is the H + ion concentration of asolution prepared by dissolving 4 g ofNaOH(Atomic weight of Na = 23 amu) in 1000ml?
12. Aqueous solution of acetic acid contains
13. At 100° C the K w of water is 55 times itsvalue at 25°CWhat will be the pHof neutralsolution? (log 55 = 1.74)
14. 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
15. Which of these is least likely to act as Lewisbase?
16. Which one of the following statements is not true? [2013]
17. The pH value of a 10 M solution of HCl is
18. A base when dissolved in water yields asolution with a hydroxyl ion concentration of 0.05 mol litre -1 The solution is
19. Which has the highest value of pH?
20. The solubility product of a sparingly solublesalt BA2 is 4 × 10-“12The solubility of BA 2 is
21. Identify the correct order of solubility inaqueous medium:
22. Which one of the following compounds isnot a protonic acid?
23. The pH value of blood does not appreciablychange by a small addition of an acid or a base - because the blood
24. Equimolar solutions of the following were prepared in water separately. Which one of thesolutions will record the highest pH?
25. Among boron trifluoride - stannic chlorideand stannous chloride - Lewis acid is representedby

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