What is the typical size range of nanoparticles?a) 1 to 100 millimetersb) 1 to 100 micrometersc) 1 to 100 nanometersd) 1 to 100 picometers

What is the standard form for 1 nanometre?1 × 10-8 m0.1 × 10-8 m0.1 × 10-9 m1 × 10-9 m2What size are nanoparticles?100-1000 nmMore than 1000 nmLess than 1 nm1-100 nm3Why are only very small amounts of nanoparticles required in industry compared with other molecules?Because they are unreactiveBecause they have a very large surface area to volume ratioBecause they have a very small surface area to volume ratioBecause they are highly flammable4Why do some people have concerns about the use of nanoparticles in sunscreens?They are flammableThey may not be very effectiveThey may enter the bloodstream with unpredictable resultsThey are very expensive

The size of colloids is :  1 point1 to 10000 nm10 to 100 nm1 to 1000 nm1 to 100 nm

What is the size comparison of one nanometer to the width of a human hair?a.1:10,000b.1:10c.1:100,000d.1:1,000

Humans can visibly perceive light from about ____ to ____ nanometers.Multiple choice question.400; 7004,000; 8,000200; 2,00040; 8,000

Gold nano particles are of following size (i) 25 nm, (ii) 50 nm, (iii) 75 nm and (iv) 100 nm. Arrange them in increasing order of wavelength absorption.