EASY
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Reaction of HNO3 with I, S, P and C gives respectively:

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Important Questions on The p-Block Elements

MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements

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

EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Good reducing nature of H3PO2 is attributed to the presence of:
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Iodine reacts with concentrated HNO3 to yield Y along with other products. The oxidation state of iodine in Y , is:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Which of the following compounds has a P-P Bond?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
The product obtained as a result of a reaction of nitrogen with CaC2 is:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Strong reducing behaviour of H3PO2 is due to:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
The pair that contains two P-H bonds in each of the oxoacids is:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Consider the following statements concerning N2H4:

(i) It is an exothermic compound.

(ii) It burns in air with the evolution of heat.

(iii) It has kinetic stability.

(iv) It reduces Fe3+ to Fe2+ in acidic medium.

Which of the following combinations is correct?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Excess of ammonia with sodium hypochlorite solution in the prescence of glue or gelatine gives:
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
When copper is heated with conc. HNO3 it produces:
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Among the following compounds, the one which does NOT produce nitrogen gas upon heating is
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Which among the following oxoacids of phosphorus shows a tendency of disproportionation?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Among the oxides of nitrogen:

N2O3, N2O4 and N2O5; the molecule(s) having nitrogen - nitrogen bond is/are:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
The compound(s) which generate(s) N2 gas upon thermal decomposition below 300oC is (are)
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
The most stable Lewis acid-base adduct among the following is
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Consider the following compounds:

1. NH42Cr2O7

2. NH4NO2

3. NH4VO3

4. NH4NO3

Which compound(s) yield(s) nitrogen gas upon heating?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Identify the correct statement from the statements given below.
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
The nitrogen containing compound produced in the reaction of HNO3 with P4O10
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 15 Elements
Which of the following oxy-acids has the maximum number of hydrogens directly attached to phosphorus?