Question # 1

The tensile strength of a carbon nanotube is __________ times that of steel.

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10

25

100

1000

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

What is abuckyball

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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)

The size of E coli bacteria is._____________ nm

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75000

2000

200

5

Opticla tweezers

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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

Formation of nano particles involves process lime

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Foramtion of metal nuclei on different sizes.

Interaction among the formed particles

Both A and B

No interaction among the nano particles synthesized

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

The smallest cluster of carbon atoms in Bucky balls known till today consists of ___________ carbon atoms.

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75

20

60

15

The full form of STM is

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Scanning Tunneling Microscope

Scientific Technical Microscope

Systematic Technical Microscope

SuperTensile Microscope

1 nanometre =___________ cm

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10^-9

10^-8

10^-7

10^-6

1 meter = ___________ nm

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10⁹

10^-9

10¹⁰

10^-10

The most important problem regarding nano chemistry

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Elucidation of relationship between also and chemical reactivity of particle

Determination of size of particle

Determination of reactivity of particle

Determination of physical properties of nano particles.

20 micron =____________________ nm

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20 x10^-9

20000

200

20x10⁹

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

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One triple bond

One double bond

Two single bonds

Two triple bonds

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

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

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100

20

75

60

Length of semiconductor nanorods are in the range of.

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1.50 nm

1-50 micro meter

100-500 nm

50-100 nm

Nano particles may interact with the support to be.

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Partially oxidized

Partically reduced

Both a and b

None

In compressive strength of a nanotube ______ its tensile strength.

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I less than

Is greater than

Is equal to

Less than or equal to.

When fullerencs were discovered they were thought to be

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First example of spherical aromatic molecule

First example of spherical non aromatic molecule

First example of diamond lime molecule

None of the above

Which of the following is class of nanorods

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metals

alloys

Metal oxide and Metal sulphite

All of the above

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

In radial direction the thermal conductivity of a nano tube is ______ watt/(m.k)

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3500

385

0

350

Which of the microscope techniques is similar to the Atomic Force Microscopy (AFM)

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Scanning Electron Microscopy

Scanning Tunneling Microscopy

Transmission Electron Microscopy

None of the above

The width of a typical DNA molecule is _______nm

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1

2

5

10

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