Question # 1

The size of nanoparticles is between __________ nm

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100 to 1000

1 to 100

0.1 to 10

0.01 to 1

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

Which of the following techniques is bulk technique.

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Powder XRD

Single Crystal XRD

SEM

TEM

The diameter of hydrogen atom is.______________nm

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10

1

0.1

0.01

In a bucky ball each carbon atom in bound in __________ adjacent carbon atoms.

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1

2

3

4

Nanoscience can be studied with the help of

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Quantum mechanics

Newtonain mechanics

Macro dynamics

Grophysics

The full form of STM is

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Scanning Tunneling Microscope

Scientific Technical Microscope

Systematic Technical Microscope

SuperTensile Microscope

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

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10000

1000

100

10

The width of a typical DNA molecule is _______nm

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1

2

5

10

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

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Lijima Indices

Miller indices

Clausen indices

None

Who prepared and explained nano tubes for the first time.

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Sumio Tijima

Richard Smaley

Erick Drexler

Richard Feynamann

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

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

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10

100

1000

1/100

Who coined the word nanotechnology.

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Eric Drexler

Richard Feynamann

Sumio tijma

Richard smalley

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

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

1 nanometre =___________ cm

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10^-9

10^-8

10^-7

10^-6

The diameter of fly ash particles is._________ micro meter

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5-10

10-20

20-30

100

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

The size of quantum dot is ________________m

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5

5 x 10^-9

5 x10^-10

5 x10^-11

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