1.

There are some deposits of nitrates and phosphates in earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms large number of complexes with transition metal ions. hybridization easily explains the ease of sigma donation capability of NH_(3) and PH_(3). phosphine is a flammable gas and is prepared from white phosphorous. Among the following, the correct statements is

Answer»

PHOSPHATES have no biological significance in humans
Between nitrates and phosphates, phosphates are less abundant in EARTH's crust
Between nitrates and phosphates, phosphates are less in earth's crust
Oxidation of nitrates is possible in soil

Solution :Nitrates are more soluble in WATER and so less abundant in earth crust.


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