Question # 1

1 meter = ___________ nm

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10⁹

10^-9

10¹⁰

10^-10

The width of a carbon nano tube is.________ nm

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1

1.3

2.5

10

Which of the following is class of nanorods

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metals

alloys

Metal oxide and Metal sulphite

All of the above

Who prepared and explained nano tubes for the first time.

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Sumio Tijima

Richard Smaley

Erick Drexler

Richard Feynamann

Who was the first scientist to describe that substance having Nano dimensions possess altogether different and unique properties.

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Richard Feynamann

Erick Drexler

Archimedes

Michael Faraday

The particles of about 1 nm need _______ activation energy to enter either aggregation processes or reactions to give to new chemicals.

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Higher

Lesser

N o

All above

1 nanometre =___________ cm

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10^-9

10^-8

10^-7

10^-6

A diameter of human hair is approximately ________________ m

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75000

75

7.5 x 10^-5

7.5 x 10^-9

Attention should be focused on qualitative changes in particle properties as a function of.

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Particle numebrs

Particle mass

Particle size

Particle density

Stablization of particles and their reactivity is affected by.

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Surface properties

Bulk properties

Regardless to the surface properties

No of particles

What exactly is quantum dot

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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

Which idea of envisioned the construction of nano robots

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Building nano materials atom by atom

Destruction of macromolecules to nano ones

Bothe of the above

None of the above

Which of the following techniques is bulk technique.

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Powder XRD

Single Crystal XRD

SEM

TEM

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

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Bottom up

Top down

Left to right

Right to left

Which of the following does not apply to nanotechnology.

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It is a general purpose technology

It can be called Green technology

Newtonian mechanics can describe it.

It involves rearrangement of atoms

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

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100 : 1

1 :100

10:1

1:10

__________ are the extensions of bucky balls.

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Goodesic domes

Hexagons

Carbon nanotubes

AFM and STM

The size of quantum dot is ________________m

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5

5 x 10^-9

5 x10^-10

5 x10^-11

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

In confining and growing nano roade CNTs will act as.

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Template

Support

Source of oxidant

Sieve

Nanoscience can be studied with the help of

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Quantum mechanics

Newtonain mechanics

Macro dynamics

Grophysics

More Classes

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PPSC Chemistry Part VII NanoChemistry Online Test MCQs With Answers

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