Question # 1

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

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75

20

60

15

A diameter of human hair is approximately ________________ m

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75000

75

7.5 x 10^-5

7.5 x 10^-9

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

Egyptians were using ________ to prepare make up for eyes.

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Nanoaluminium

Nanocopper

Nanosteel

Nanolead

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

The thermal conductivity of an SWNT along length is _____ watt/(m.k)

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35

330

386

3500

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

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

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.

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

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10000

1000

100

10

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

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10

100

1000

1/100

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

In Nano synthesis new unsual chemical reactions are due to.

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Non equilibrium system

Equilibrium system

Isothermal system

Adiabatic process

What is graphene.

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A new material made from carbon nanotubes

A one atom thick sheet of carbon

This film made from fullerene

A software tool to measure and graphically respresent nanoparticles.

The hardest material found in nature is

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Steel

Topaz

Diamond

Quartz

Which of the following techniques is bulk technique.

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Powder XRD

Single Crystal XRD

SEM

TEM

The physical methods of nano roads syntheses involves.

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Top down approach

Bottom up approach

Left right approach

Right left approach

1 nanometre =___________ cm

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10^-9

10^-8

10^-7

10^-6

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

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Increase

Decrease

No effect

Both a and b

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.

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