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

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Important Questions on The p-Block Elements

EASY

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

The best reducing agent among the following is

EASY

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

Iodine reacts with concentrated

H N O_{3}

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 statements are correct?

I)

P_{4}

molecule is very reactive because of angular strain.

II)

The basicity of

H_{3} {PO}_{3}

3

III)

In gas phase, all

P - Cl bonds

{PCl}_{5}

have same bond length.

IV)

In solid state,

{PCl}_{5}

exists as an ionic solid, in which anion

{[{PCl}_{6}]}^{-}

has octahedral and cation

{[{PCl}_{4}]}^{+}

has tetrahedral shape.

EASY

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

Of the following compounds, the most acidic is:

EASY

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

Good reducing nature of

H_{3} P O_{2}

is attributed to the presence of:

EASY

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

A group

15

element, which is a metal and forms a hydride with strongest reducing power among group

15

hydrides. The element is :

MEDIUM

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

The correct order of the bond angles of the given compounds is

MEDIUM

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

Which hydride amongst the following has the least boiling point ?

HARD

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

Consider the following compounds:

1 . {(N H_{4})}_{2} C r_{2} O_{7}

2 . N H_{4} N O_{2}

3 . N H_{4} V O_{3}

4 . N H_{4} N O_{3}

Which compound(s) yield(s) nitrogen gas upon heating?

MEDIUM

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

Which of following elements does not react with hot concentrated sulphuric acid?

EASY

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

Acid having

+ 4

oxidation state of phosphorus is

EASY

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

Which element among the following does form

Pπ - Pπ

multiple bonds?

EASY

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

Anomalous behavior of nitrogen is due to

EASY

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

Which of the following fluoro-compounds is most likely to behave as a Lewis base?

EASY

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

The compound(s) that does(do) not exist is (are)

MEDIUM

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

The oxidation states of

' P'

H_{4} P_{2} O_{7}, H_{4} P_{2} O_{5}

and

H_{4} P_{2} O_{6},

respectively, are :

EASY

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

{PCl}_{3}

is stored in a well stoppered bottle since

MEDIUM

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

In which oxidation state, group 15 elements act as Lewis base?

MEDIUM

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

Consider the following statements concerning

N_{2} H_{4} :

(i) It is an exothermic compound.

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

(iii) It has kinetic stability.

(iv) It reduces

F e^{3 +}

F e^{2 +}

in acidic medium.

Which of the following combinations is correct?

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

C a C_{2}

is:

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

Important Questions on The p-Block Elements

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