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Nano_Quiz 2

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

…….. are from one-dimensional nanomaterials

a)

Carbon nanotubes

b)

Thin films

c)

Bucky balls

d)

Nanoshells

2.

0.01 nanometer is a dimension for .......

a)

one dimension nanomaterials

b)

two dimension nanomaterials

c)

three dimension nanomaterials

d)

not a nanomaterial

3.

GR:- The extraordinary properties of nanomaterials

a)

Due to the decrease of the ratio between the surface area and weight and the no. of atoms on the surface.

b)

Due to the increase of the ratio between the density and volume and the no. of atoms on the surface.

c)

Due to the decrease of the ratio between the surface area and volume and the no. of atoms on the surface.

d)

Due to the increase of the ratio between the surface area and volume and the no. of atoms on the surface.

4.

find if the following dimensions are for nanomaterial or not :

l = 20000 μml\ =\ 20000\ \mu m  

w =20x106mmw\ =20x10^{-6}mm  

h=2x103 nmh=2x10^3\ nm  

a)

one dimension

b)

two dimensions

c)

three dimensions

d)

not a Nano material

5.

convert : 2 cm  = ....... nm2\ cm\ \ =\ .......\ nm  

a)

2×10+72\times10^{+7}  

b)

2×1062\times10^{-6}  

c)

2×10+62\times10^{+6}  

d)

2×1072\times10^{-7}  

6.

The creating of nanoscale materials by chemically or physically breaking down the larger materials is known as ______________ approach in nanotechnology?

a)

Top-down

b)

Bottom-up

c)

Bottom-down

d)

None of the above

7.

________ nanoparticles include metals and metal oxides.

a)

Organic

b)

Inorganic

8.

The colour of the gold nano particles is

a)

Yellow

b)

Red

c)

Orange

d)

Variable

9.

The ___________ lithography does not need a mask.

a)

Electron beam

b)

Photo

10.

PDMS is a common elastomer used for

a)

Photolithography

b)

Soft lithography

c)

Dip-pen nanolithography

11.

________ is a technique used to spread uniform thin films on flat substrates by centrifugal force.

a)

Microcontact printing

b)

Capillary molding

c)

Spin coating

d)

Photolithography

12.

_______ polymerization is a heterogeneous polymerization process that begins initially as a homogeneous system in the continuous phase, where the monomer and initiator are completely soluble, but upon initiation the formed polymer is insoluble and thus precipitates.

a)

Emulsion

b)

Precipitation

c)

Suspension