P - Block Elements Test

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P - Block Elements Test - 11

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Weekly Quiz Competition

Question 1
4 / -1

Which type of silicate is shown in the given figure?

A
Orthosilicate

B
Pyrosilicate

C
Metasilicate

D
None of these
Question 2
4 / -1

In feldspar and zeolite, Si ⁴⁺ ions are replaced by which ions?

A
Oxide ion

B
Hydroxide ion

C
Aluminium ion

D
Potassium ion
Question 3
4 / -1

Among the following substituted silanes, the one which will give rise to cross linked silicon polymer on hydrolysis is

A
R₄Si

B
RSiCl₃

C
R₂SiCl₃

D
R₃SiCl
Question 4
4 / -1

Identify B in the following reaction,

A
corundum

B
quartz

C
silica

D
carborundum

Solution
Question 5
4 / -1

Diamond is hard because

A
all the four valence electrons are bonded to each carbon atom by covalent bonds

B
it is a giant molecule

C
it is made up of carbon atoms

D
it cannot be burnt
Question 6
4 / -1

Silica is a/an

A
acidic flux only

B
gangue only

C
basic flux only

D
Both gangue and acidic flux
Question 7
4 / -1

In silica (SiO₂), each silicon atom is bonded to

A
two oxygen atoms

B
four oxygen atoms

C
one silicon and two oxygen atoms

D
one silicon and four oxygen atoms
Question 8
4 / -1

The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence

A
GeX₂ < SiX₂ < SnX₂ < PbX₂

B
SiX₂ < GeX₂ < PbX₂ < SnX₂

C
SiX₂ < GeX₂ < SnX₂ < PbX₂

D
PbX₂ < SnX₂ < GeX₂ < SiX₂
Question 9
4 / -1

Monosilane on coming in contact with air bums with a luminous flame producing vortex rings. These rings are of

A
SiO₂

B
SiO

C
Si

D
H₂SiO₃

Solution
Question 10
4 / -1

Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that, graphite

A
is a non-crystalline substance

B
is an allotropic form of diamond

C
has molecules of variable molecular masses like polymers

D
has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds

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P - Block Elements Test - 11

Result

P - Block Elements Test - 11

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Question 1

Orthosilicate

Pyrosilicate

Metasilicate

None of these

Question 2

Oxide ion

Hydroxide ion

Aluminium ion

Potassium ion

Question 3

R4Si

RSiCl3

R2SiCl3

R3SiCl

Question 4

corundum

quartz

silica

carborundum

Solution

Question 5

all the four valence electrons are bonded to each carbon atom by covalent bonds

it is a giant molecule

it is made up of carbon atoms

it cannot be burnt

Question 6

acidic flux only

gangue only

basic flux only

Both gangue and acidic flux

Question 7

two oxygen atoms

four oxygen atoms

one silicon and two oxygen atoms

one silicon and four oxygen atoms

Question 8

GeX2 < SiX2 < SnX2 < PbX2

SiX2 < GeX2 < PbX2 < SnX2

SiX2 < GeX2 < SnX2 < PbX2

PbX2 < SnX2 < GeX2 < SiX2

Question 9

SiO2

SiO

Si

H2SiO3

Solution

Question 10

is a non-crystalline substance

is an allotropic form of diamond

has molecules of variable molecular masses like polymers

has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds

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R₄Si

RSiCl₃

R₂SiCl₃

R₃SiCl

GeX₂ < SiX₂ < SnX₂ < PbX₂

SiX₂ < GeX₂ < PbX₂ < SnX₂

SiX₂ < GeX₂ < SnX₂ < PbX₂

PbX₂ < SnX₂ < GeX₂ < SiX₂

SiO₂

H₂SiO₃