s all of she above C Swallowed d Al of the above za. b. photon polution d seroso

Question

s all of she above C Swallowed d Al of the above za. b. photon polution d seroso 13. The week interaction force between graphene planes gives graphite its_ b. a and d e density d lubricant rings. 20 Spherical and cylindrical fullerenes have certain numbers of b. heptagonal and pentagon c. hexagon and pentagorn d octagon 21. A 10tig nanoparticle occupies 10-m, space. Density of this nanoparticle is kg/m, a, 10, b. 10 c.10-e d. 10 22. A five ampere current in 10 second can create coulomb charge. a. 10-1 b. 103 c. 5x 10- d. 2x 10-10 or es suspended in the air act like aerosol and have the

Explanation / Answer

21. Mass of nanoparticle = 10-12g = 10-15kg

Volume occupied = 10-8 m3

Density = mass/volume = 10-15/10-8 = 10-7 kg/m3

option a is correct.

22. Charge = Current x time = 5 x 10-9 Coulombs

Option c is correct.

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