Pb 3 O 4 + 4 HNO 3 → 2 Pb NO 3 2 + PbO 2 + 2 H 2 O Which is TRUE about the lead ions in Pb 3 O 4 ?

Pb + 2 reacts with HNO 3 to give lead nitrate

Pb + 4 reacts with HNO 3 to give lead nitrate

Pb + 2 reacts with HNO 3 to give PbO 2

Pb + 4 reacts with HNO 3 to give PbO 2

EASY

Earn 100

Identify the group $14$ element that best fits the following description, a non-metallic element.

Important Questions on The p-Block Elements

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

An allotrope of carbon which exhibits only two types of

C - C

bond distance of

143.5 pm

and

138.3 pm

, is

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

The element that does not show catenation is

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Identify the correct statements from the following:
(a)

{CO}_{2} (g)

is used as a refrigerant for ice cream and frozen food.
(b) The structure of

C_{60}

contains twelve six-membered carbon rings and twenty-five membered carbon rings.
(c)

ZSM - 5

, a type of zeolite, is used to convert alcohols into gasoline.
(d)

CO

is a colourless and odourless gas.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Correct statements among regarding silicones are:
$(a)$ They are polymers with hydrophobic character.
$(b)$ They are biocompatible.
$(c)$ In general, they have high thermal stability and low dielectric strength.
$(d)$ Usually, they are resistant to oxidation and used as greases.

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Good reducing nature of

H_{3} P O_{2}

is attributed to the presence of:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Mention any three uses of silicones.

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

The basic structural unit of feldspar, zeolites mica, and asbestos is:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Identify the correct statements from the following.

i) Quartz is a piezoelectric material
ii) All group $14$ tetrachlorides except ${CCl}_{4}$ are easily hydrolyzed in water.
iii) The $C - C$ bond distance within the layer of graphite is $154 pm$ .
iv) ${SiO}_{2}$ is soluble in aqueous $HCl$ solution.

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

{AlF}_{3}

is soluble in

HF

only in presence of

KF

. It is due to the formation of

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

α -

chlorosodium acetate on boiling with aqueous sodium nitrite gives

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Which statement is incorrect in context with Anthracite?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

The product obtained as a result of a reaction of nitrogen with

C a C_{2}

is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

The hybridizations of carbon in graphite, diamond and

C_{60}

are respectively

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Zeolites are shape selective structures because of

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.

Reason (R): Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and / or prevents malfunctioning.

In the light of the above statements, choose the correct answer from the options given below:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

{Pb}_{3} O_{4} + 4 {HNO}_{3} \to 2 Pb {({NO}_{3})}_{2} + {PbO}_{2} + 2 H_{2} O

Which is TRUE about the lead ions in

{Pb}_{3} O_{4}

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Identify the incorrect statement from the following

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Identify the incorrect statements from the following

I .

Tin in

+ 2

state acts as reducing agent while lead in

+ 4

state acts as strong oxidising agent.

II .

Silicon exists as both

{[{SiF}_{6}]}^{2 -}

and

{[{SiCl}_{6}]}^{2 -}

forms.

III .

The hybridisation of carbon in fullerene is

{sp}^{3}

IV .

Among

Ge, Sn

and

Pb

lowest melting point is for

Sn

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Iodine reacts with concentrated

H N O_{3}

to yield

Y

along with other products. The oxidation state of iodine in

Y

, is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Group 14 Elements: The Carbon Family

Identify the correct statements

I)

Germanium exists only in traces.

II)

The order of electronegativity of

Si, Ge, Sn

Sn > Ge > Si

III)

All group

14

elements are available in solid state

Identify the group 14 element that best fits the following description, a non-metallic element.

Important Questions on The p-Block Elements

Learn and Prepare for any exam you want !

Identify the group $14$ element that best fits the following description, a non-metallic element.