Which of the following is (are) inorganic pesticide(s)?
As
Sulphur
Oxygen
Both 1 and 2
Inorganic pesticides are persistent and contain arsenic(As) and sulphur(S).
Hence, option number (4) is correct.
50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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