Free Printable Silicones

1.

Silicones contains which type of linkages

a)

Si-C-Si

b)

Si-N-Si

c)

Si-Si-Si

d)

Si-O-Si

2.

Silicones are used as

a)

Conductors

b)

Semiconductors

c)

Insulators

d)

All of the above

3.

Silicones are

a)

Bitter

b)

Sour

c)

Toxic

d)

Non-Toxic

4.

Silicones have the General formula

a)

$SiO_4^{4^-}$

b)

$\left(R_2SiO\right)_n$

c)

$\left(R_3SiO\right)_n$

d)

$\left(R_4SiO\right)_n$

5.

$Me_2SiCl_2\ on\ hydrolysis\ produces$

a)

$Me_2Si\left(OH\right)_2$

b)

$Me_2SiCl\left(OH\right)$

c)

$\left(Me_2Si-O\right)_n$

d)

$Me_2Si=O$

6.

The straight chain polymer is formed by

a)

hydrolysis of $CH_3SiCl_3$ followed by condensation

polymerisation

b)

hydrolysis of $CH_3SiCl_3$ followed by addition polymerisation

c)

hydrolysis of $\left(CH_3\right)_2SiCl_2$ followed by condensation polymerisation

d)

hydrolysis of $CH_3SiCl_3$ followed by condensation polymerisation

7.

Among the following substituted silanes the one which will

give rise to cross linked silicone polymer on hydrolysis is

a)

$R_4Si$

b)

$RSiCl_3$

c)

$R_2SiCl_2$

d)

$R_3SiCl$

8.

$R_3SiCl$ on hydrolysis followed by condensation polymerisation produces

a)

$R_3SiOH$

b)

$R_3Si-O-SiR_3$

c)

$R_2Si=O$

d)

All of the above

9.

Y and X respectively are

a)

$SiCl_4,\ Si\left(OH\right)_4$

b)

$\ Si\left(OH\right)_4,\ SiCl_4$

c)

$\left(CH_3\right)_2Si\left(OH\right)_2,\ \left(CH_3\right)_2SiCl_2$

d)

$\left(CH_3\right)_2SiCl_2,\ \left(CH_3\right)_2Si\left(OH\right)_2$

10.

When $SiCl_4$ undergoes hydrolysis to give

a)

$Si\left(OH\right)_4$

b)

$Si\left(OH\right)Cl_3$

c)

Silicic acid

d)

both $Si\left(OH\right)_4$ and Silicic acid

11.

Which of the following is not a monomer for high molecular mass silicone polymer

a)

$Me_3SiCl$

b)

$Me_2SiCl_2$

c)

$MeSiCl_3$

d)

all of the above

12.

Which of the following produces aromatic cyclic silicone

a)

$Ph_2SiCl_2$

b)

$PhSiCl_3$

c)

$Ph_3SiCl$

d)

all of the above

13.

what is the product

a)

$C_6H_5SiCl_3$

b)

$C_6H_5SiCl_2$

c)

$C_6H_5SiCl_{ }$

d)

$C_6H_5SiC_6H_5$

14.

Silicone are used in

a)

Water proofing treatments

b)

Insulating materials

c)

Molding compounds

d)

all of the above

15.

$2C_2H_5MgCl+SiCl_4\ \ \rightarrow\ \ ?$

a)

$\left(C_2H_5\right)SiCl_3$

b)

$\left(C_2H_5\right)_2SiCl_2$

c)

$\left(C_2H_5\right)_3SiCl_{ }$

d)

all of the above

16.

X and Y are

a)

$CH_3SiCl_3,\ Linear\ silicone$

b)

$CH_3SiCl_3,\ Cross-linked\ silicone$

c)

$\left(CH_3\right)_2SiCl_2,\ Cyclic\ silicone$

d)

$\left(CH_3\right)_2SiCl_2,\ Cross-linked\ silicone$

17.

X and Y are

a)

$CH_3SiCl_3,\ Linear\ silicone$

b)

$CH_3SiCl_3,\ Cross-linked\ silicone$

c)

$\left(CH_3\right)_2SiCl_2,\ Cyclic\ silicone$

d)

$\left(CH_3\right)_2SiCl_2,\ Cross-linked\ silicone$

18.

Silicones can be classified into

a)

Two type

b)

Three types

c)

Five types

d)

Six types

19.

The basic structural unit present in the silicates is

a)

$SiO_4^{4-}$

b)

$SiO_4^{3-}$

c)

$SiO_3^{4-}$

d)

$SiO_3^{3-}$

20.

Silicones contains

a)

only Si-O-Si bonds

b)

only Si-C bonds

c)

both Si-O-Si and Si-Cl bonds

d)

both Si-O-Si and Si-C bonds

Silicones

Total questions: 20

Worksheet time: 10mins

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