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Worksheetsquiz 2 - 1 sec
Total questions: 19
Worksheet time: 2hrs 35mins
convert from 30 kilogram to gram
10x103
30x103
30x102
10x104
from femtosecond to second
x10-14
x10-15
x10-12
x10-11
nanoscale is a scale from
100 nm
less than 100 nm
less than 100 m
none of the above
As the division of a cube increases
vOULME increases
Surface area increases
Volume constant
surface area constant
From examples of one dimension nano substance
Thin Film
nano wire
nano fiber
carbon tube
nanotechnology has harmful effect on health ?
yes
no
from 100 kilogram to milligram ?
108 mg
107 mg
106 mg
103 mg
from 56.7 nanosecond to femtosecond
56.7 x 10 6 sec
56.7 x 10 3 sec
56.7 x 10 2 sec
56.7 x 10 1 sec
carbon nanotubes are harder than steel due to
powerful bonds between it's molecules
they are very small
they are good conductor of electricity
none of the above
carbon nano tubes are used in biological sensors
as they are connected easily to protein
as they are good conductor of heat
as they are good conductor of electricity
as stronger and lighter than steel
convert 30 kilometer to micrometer
30x109 μm
30x102 μm
30x108 μm
30x103μm
nano substance could be
Particles
nano tubes
nano fibers
columns
Bucky Ball C60
contain 60 carbon atoms
hollow football
characterized by a group of special properties
none of the above
Nano fibers
used in production of water filters
electric circuits
packaging of food
painting surface
As the division of the cube increases
The ratio between the surface area and the volume increase
The reaction become faster
The reaction become slower
The ratio between the surface area and the volume decrease
The rule for calculation of surface area
6L2
L3
L
L2
The rule for calculation of Volume
6L2
L3
L
L2
From the Harmful effect of nanotechnology
Environmental field
Medical field
Social effects
all the followiing
