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Because of antisotropyA. mica cleaves into long rod like piece and asbestos cleaves into thin sheetsB. mica cleaves into thin sheets and asbestos cleaves into long rod like pieces.C. both mica and asbestos cleave into thin sheetsD. both mica and asbestos cleaves into long rod like pieces

Answer» Correct Answer - 2
This is because mica and asbestos are crystalline solids. Asbestos is a variety of fibrous silicate minerals mainly calcium magnesium and for fire proof fabrics.it is used as a heat insulating material and for fire -proof fabris. In halation of the fibres can be extremely dangerous.
Mica corroesponds to a group of minerals,the most important of which are muscovite `H_(2)KAl_(3)(SiO_(4))_(3)` and phlogopite,`H_(2)KMgAl(SiO_(4))_(3)`.Naturally occuring mica can be split along its cleavages into small thick pieces (blocks) or thin sheets (spliting). Being a excellent insulator and being resistant to high temperatures, mica is used as a dielectric in capacitors, as a support for electrodes in thermonic valves,and for heating elements in irons ,etc
As mica is also transparent it is used for inspection windows of furnance.
Isotropic solids have the same mechanical strength electrical strength optical strength in all directions.


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