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Online Tests
PPSC Chemistry Part VII NanoChemistry Online Test MCQs With Answers
Question # 1
The tensile strength of a carbon nanotube is __________ times that of steel.
Choose an answer
10
25
100
1000
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Question # 2
The diameter of fly ash particles is._________ micro meter
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5-10
10-20
20-30
100
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Question # 3
Who prepared and explained nano tubes for the first time.
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Sumio Tijima
Richard Smaley
Erick Drexler
Richard Feynamann
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Question # 4
Alpha hematite nano tubes show dimensional magnetic ordering at temperature laser than 300 K.
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0
1
2
3
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Question # 5
Nano technology in other words is.
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Carbon engineering
Atomic engineering
Small technology
Microphysics
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Question # 6
Who coined the word nanotechnology.
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Eric Drexler
Richard Feynamann
Sumio tijma
Richard smalley
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Question # 7
The size of E coli bacteria is._____________ nm
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75000
2000
200
5
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Question # 8
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
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Question # 9
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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Question # 10
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)
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Question # 11
The width of a carbon nano tube is.________ nm
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1
1.3
2.5
10
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Question # 12
Nanoscience can be studied with the help of
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Quantum mechanics
Newtonain mechanics
Macro dynamics
Grophysics
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Question # 13
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
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Question # 14
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
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Question # 15
A diameter of human hair is approximately ________________ m
Choose an answer
75000
75
7.5 x 10
-5
7.5 x 10
-9
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Question # 16
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
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Question # 17
In Nano synthesis new unsual chemical reactions are due to.
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Non equilibrium system
Equilibrium system
Isothermal system
Adiabatic process
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Question # 18
"There is a plenty of room at the bottom" This was stated by
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Issac Newton
Albert Einstein
Richard Feynman
Eric Drexler
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Question # 19
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
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Question # 20
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
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Question # 21
Which ratio decides the efficiency nano substance.
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Weight /volume
Surface area/volume
Volume/weight
Pressure/volume
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Question # 22
The capacity of normal human eye to see the smallest object is _______ micro meter
Choose an answer
10000
1000
100
10
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Question # 23
The diameter of hydrogen atom is.______________nm
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10
1
0.1
0.01
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Question # 24
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
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Question # 25
What does 'F' stand for in AFM.
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Fine
Front
Force
Flux
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