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Answers
ammonium chloride is formed by mixing ammonium Hydroxide and hydrochloric acid in the reaction water is also given out in the form of droplets it is also produced during any neutralization reaction salt is formed through the through the process of neutralisation in the process of neutralisation acid and base react with each other to produce salt and water with the evolution of heat
the folding or dropping of leaves is an example of growth dependent Movement in plants
12.pesticides and fertilizers
13.placenta
14. 23 chromosomes
15.a)it require very large area
b)minimum wind speed required is 15km/h
16.when a acid reacts with a base to form salt and water
17.bending of stem towards sunlight
18.elements of periodic table are periodic function of their atomic mass