The handles of pressure cookers are made of ebonite because it being a bad conductor of heat, does not heat up.
Diamond is very hard due to its rigid three dimensional structure and so, it is used for cutting glass. Refractive index of diamond is high and gives it the greater transparency and brilliance.
Pluto, being farthest from the sun, hardly gets the sun's rays. So, Pluto is the coldest planet.
Eskimos live in snow houses called igloos because snow, being a bad conductor of heat, these houses are warm inside.
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