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There are some deposits of nitrated and ...

There are some deposits of nitrated and phosphates in the earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under laboratory conditions but microbes do it easily. Ammonia forms a large number of complexes with transition metal ions. Hybridisation 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.
Which of the following statement is correct ?

A

phosphates have no biological significance in humans .

B

between nitrates and phosphates, phosphates are less a abundant in earth's cursy.

C

between nitrates and phosphates, niteates are less abundant in earth's crust.

D

oxidation of nitrates is possible in soil.

Text Solution

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The correct Answer is:
C
Because of following two resasons,the nitrates are less abundant in earth crust.
(i) Nitrates have greater solubiltity in water.
(ii) Nitreates are prone to microbial action.
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There are some deposits of nitrated and phosphates in the earth's crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under laboratory conditions but microbes do it easily. Ammonia forms a large number of complexes with transition metal ions. Hybridisation 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. White phosphorous on reaction with NaOH gives PH_3 as one of the products. This is a.

There are some deposits of nitrates and phosphate 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. White phosphorus on reaction with NaOH gives PH_(3) as one of the products. This is a:

There are some deposits of nitrates and phosphates. 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 metals ions. Hybridization easily explains the ease of sigma donation capacity of NH_(3) and PH_(3) . Phosphine is a flamable gas and is prepared from white phosphorus. Among the following the correct statement is

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  2. Thermodynamically most stable allotrope of phosphorus is :

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  3. There are some deposits of nitrated and phosphates in the earth's crus...

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  4. There are some deposits of nitrated and phosphates in the earth's crus...

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  12. Which of the following oxoacids of sulpher has -O-O- linkage ?

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  13. Which of the following will not be oxidised by O(3)?

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  14. Which gas is evolved when PbO(2) is treated with conc HNO(3) ?

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