Chemicals used to kill weed is known as
Insecticides
fungicides
herbicides
None of these
Herbicides are used to kill weeds.
Hence, option number (3) 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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