Which one among the following is incorrect about fertilisers?(i) A fertilizer is a salt or an organic compound.(ii) A fertilizer is obtained by the decomposition of animal wastes and plant residues.(iii) A fertilizer provides a lot of humus to the soil.(iv) Most of the fertilisers are soluble in water.A)(i) and (ii) B)(ii) and (iii) C)(iii) and (iv) D) (i) and (iv)
Question
Which one among the following is incorrect about fertilisers?(i) A fertilizer is a salt or an organic compound.(ii) A fertilizer is obtained by the decomposition of animal wastes and plant residues.(iii) A fertilizer provides a lot of humus to the soil.(iv) Most of the fertilisers are soluble in water.A)(i) and (ii) B)(ii) and (iii) C)(iii) and (iv) D) (i) and (iv)
Solution
The incorrect statement about fertilisers is (iii) A fertilizer provides a lot of humus to the soil. Fertilisers are used to provide essential nutrients to plants, but they do not contribute to the humus content of the soil. Humus is organic material that is formed in soil from plant and animal decay. Therefore, the correct answer is C) (iii) and (iv).
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