Give reasons :
Plants begin to die when excess of soluble fertilizers are added to the soil.

What will happen if excess fertilizers are added to soil?

Give suitable biological reasons for the following statement : Root hairs become flaccid and droop when excess fertilizers are added to the moist soil around them .

Give reason for the following: Blue solution of copper sulphate changes to green when a piece of iron is added to the solution.

Why plants die when over fertilized?

What happens when excess of ammonia is added to copper sulfate solution ?

Identify the cations in each of the following cases: i] NaOH solution when added to the solution 'A' - gives a reddish brown precipitate. ii] NH_4OH solution when added to the solution 'B' - gives a white ppt which does not dissolve in excess. jii] NaOH solution when added to the solution 'C' - gives a white ppt which is insoluble in excess.

Why do the leaves of a plant wilt when taken out of the soil?

Give biological reason for the following statements : Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered.

Give reasons for the Nitrogenous fertilizers are not applied in fields where leguminous crops grow.

Give reasons for the following: Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.