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The number of P-O-P bonds in the structure of phosphorus pentoxide and phosphorus trioxide are respectively:

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Important Questions on The p-Block Elements

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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Strong reducing behaviour of H3PO2 is due to:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The pair that contains two P-H bonds in each of the oxoacids is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The compound(s) which generate(s) N2 gas upon thermal decomposition below 300oC is (are)
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Complete and balance the following chemical equations: P4+NaOH+H2O→Inert atm.heat_____+_____.
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
When copper is heated with conc. HNO3 it produces:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Which of the following compounds has a P-P Bond?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus

The total number of compounds having at least one bridging oxo group among the molecules given below is
N2O5, P4O6, P4O8, H4P2O5, H5P3O10, H2S2O3, H2S2O5

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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The compound that does not produce nitrogen gas by thermal decomposition is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Identify the correct statement from the statements given below.
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Iodine reacts with concentrated HNO3 to yield Y along with other products. The oxidation state of iodine in Y , is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Among the oxides of nitrogen:

N2O3, N2O4 and N2O5; the molecule(s) having nitrogen - nitrogen bond is/are:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The nitrogen containing compound produced in the reaction of HNO3 with P4O10
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
What happens when yellow phosphorus is heated with dilute NaOH solution?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The number of P-OH bonds and the oxidation state of phosphorus atom in pyrophosphoric acid H4P2O7, respectively are:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The reaction of zinc with dilute and concentrated nitric acid, respectively, produces:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The pair in which phosphorous atoms have a formal oxidation state of + 3 is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Good reducing nature of H3PO2 is attributed to the presence of:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
The product obtained as a result of a reaction of nitrogen with CaC2 is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Some Other Properties of Compounds of Phosphorus
Dissolving 1.24 g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q. The amount of CuSO4 (in g) required to completely consume the gas Q is____[Given: Atomic mass of H=1, O=16, Na=23, P=31, S=32, Cu=63]