Organic farming involves use of
Manures
biofertilizer
Pesticides
Both 1 & 2
Organic farming involves the use of biofertilizers, manures, and biological controls.
Hence, the 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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