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. Hybridisation easily explains the case of sigma donation capability of $N H_{3}$ and $P H_{3}$ . Phosphine is a flammable gas and is prepared from white phosphorus.

Among the following, the correct statement is

Phosphates have no biological significance in humans

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Between nitrates and phosphates, phosphates are less abundant in earth's crust

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Between nitrates and phosphates, nitrates are less abundant in earth's crust

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Oxidation of nitrates is possible in soil

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Solution

The correct option is C Between nitrates and phosphates, nitrates are less abundant in earth's crust
Due to greater solubility in water and prone to microbial attack, nitrates are less abundant in earth's crust.

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Q. 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. Hybridisation easily explains the case of sigma donation capability of

N H_{3}

and

P H_{3}

. Phosphine is a flammable gas and is prepared from white phosphorus.

Which phosphorous on reaction with NaOH gives

P H_{3}

as one of the product. This is a

N H_{3}

and

P H_{3}

. Phosphine is a flammable gas and is prepared from white phosphorus.

Among the following, the correct statement is

N H_{3}

and

P H_{3}

. Phosphine is a flammable gas and is prepared from white phosphorus.

Which phosphorous on reaction with NaOH gives

P H_{3}

as one of the product. This is a

Ammonia forms a large number of complexes with transition metal ions. Hybridisation easily explains the case of sigma donation capability of $N H_{3}$ and $P H_{3}$ .
Choose the correct statement from the following:

Q. Metals are usually not found as nitrates in their ores. Out of the following two (

a

and

b

) reasons which is /are true for the above observation?

(a) Metal nitrates are highly unstable
(b) Metal nitrates are highly soluble in water

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The correct option is C Between nitrates and phosphates, nitrates are less abundant in earth's crustDue to greater solubility in water and prone to microbial attack, nitrates are less abundant in earth's crust.

The correct option is C Between nitrates and phosphates, nitrates are less abundant in earth's crust
Due to greater solubility in water and prone to microbial attack, nitrates are less abundant in earth's crust.