Question

Assertion : 2,4-D is extensively used in agricultural and horticultural practies.
Reason : 2,4-D is a herbicide.
A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer 1

Correct Answer - a
NA A (naphthalene acetic acid) and 2,4-D(2,4-dichlorophenoxyacetic acid) are synthetic auxins. All these auxins have been used extensively in agricultural and horicultural practies. They are widely used as herbicides. 2,4-D is widely used to kill dictoyledonous weeds, it does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.