Question # 1

What exactly is quantum dot

Choose an answer

A semiconductor nanostructure that confines the motion of conduction band electrons, valence band holes or excitation in all three spatial directions

The sharpest possible tip of an atomic force microscope

A fictional term used in science fiction for the endpoints of wormholes

Unexplained spots that appear electron microscopy images of nanostructures smaller than 1 nanometer

In confining and growing nano roade CNTs will act as.

Choose an answer

Template

Support

Source of oxidant

Sieve

Who prepared and explained nano tubes for the first time.

Choose an answer

Sumio Tijima

Richard Smaley

Erick Drexler

Richard Feynamann

The suffix '-ene' in the name of fullerene shows the presence of ___ in the molecule.

Choose an answer

One triple bond

One double bond

Two single bonds

Two triple bonds

The size of E coli bacteria is._____________ nm

Choose an answer

75000

2000

200

5

The size of nanoparticles is between __________ nm

Choose an answer

100 to 1000

1 to 100

0.1 to 10

0.01 to 1

1 meter = ___________ nm

Choose an answer

10⁹

10^-9

10¹⁰

10^-10

Opticla tweezers

Choose an answer

Are used to remove facial hair with miniaturized laser beams

use light to manipulate particles as small as single atom

Are a nanotechnology bases tool for stamp collectors

Don't exist

__________ are the extensions of bucky balls.

Choose an answer

Goodesic domes

Hexagons

Carbon nanotubes

AFM and STM

The diameter of a bucky ball is about _____________

Choose an answer

o

1 A

1 nm

o

100 A

10 nm

The orientation of a crystalline surface is confidently defined in terms of.

Choose an answer

Lijima Indices

Miller indices

Clausen indices

None

What does 'F' stand for in AFM.

Choose an answer

Fine

Front

Force

Flux

The ration of thermal conductivity of silver to that of a carbon nanotube is.

Choose an answer

100 : 1

1 :100

10:1

1:10

In Nano synthesis new unsual chemical reactions are due to.

Choose an answer

Non equilibrium system

Equilibrium system

Isothermal system

Adiabatic process

The electrical conductivity of a nano tube is __________ times that of copper.

Choose an answer

10

100

1000

1/100

Fullerene or bucky ball is made up of ________ carbon atoms.

Choose an answer

100

20

75

60

1 nanometre =___________ cm

Choose an answer

10^-9

10^-8

10^-7

10^-6

When a large block of silicon wafer is reduced to smaller component and hence non material is formed this approach is called.

Choose an answer

Bottom up

Top down

Left to right

Right to left

A considerable number of atoms pertaining to the surface_____ with the decreasing the particle size.

Choose an answer

Increase

Decrease

No effect

Both a and b

The capacity of normal human eye to see the smallest object is _______ micro meter

Choose an answer

10000

1000

100

10

The width of a carbon nano tube is.________ nm

Choose an answer

1

1.3

2.5

10

How many oxygen atoms lined up in a now would fit in a one nanometer speace.

Choose an answer

None an oxygen atoms is bigger than 1 nm

One

Seven

None of the above

In compressive strength of a nanotube ______ its tensile strength.

Choose an answer

I less than

Is greater than

Is equal to

Less than or equal to.

The size of quantum dot is ________________m

Choose an answer

5

5 x 10^-9

5 x10^-10

5 x10^-11

What is abuckyball

Choose an answer

A carbon molecule

Nickname for Mercedes -Benz's futuristic concept car (CIII)

Plastic explosives nanoparticle (C4)

Concrete nanoparticle with a compressive strength of 20 nanonewtons(C20)

More Classes

Other Links

PPSC Chemistry Part VII NanoChemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer