Worksheets1 sec Ch1 L2, U2 prelude
Total questions: 10
Worksheet time: 50mins
The nano substance that is used to protect iron from rusting is ....
Thin film
Bucky ball
Nanoshell
No correct answer
The chemical formula of calcium bicarbonate
CaHCO3
CaH(CO3)2
Ca2HCO3
Ca(HCO3)2
10 nm equivalent to
10-⁸ m
10-⁷ m
10-⁹ m
10-¹⁰ m
All of the following are examples of monoatomic molecules except.....
Sodium molecule
Iron molecule
Sulphur molecule
No correct answer
The following compounds formulas : KNO3, Pb(NO3)2, Fe(NO3)3 indicate that nitrate group is .......
Monovalent only
Divalent only
Trivalent only
Mono, di and trivalent
Producing nano devices for dialysis is one of applications of the nano technology in the ....... Field
Agricultural
Communication
Medical
Environmental
Nano substance may take many shapes such as
Particles
Columns
Fibers
All of the above
All of the following are properties of the carbon nanotubes except .....
Has hollow structure
Higher ability to conduct electricity than copper
Very strong
Connect easily to protein
To modify solar cells to prevent leakage of heat, we must produce them from .......
Nano iron
Nano silicon
Nano copper
Nano fibers
Nano particles used in cosmetics for .......
Self cleaning
Sun protection
Killing bacteria
No correct answer
