Question

Que 5: : Which rocks or minerals are used to make the following articles? Write their names.
a. Mirror
b. Watches
c. Pottery
d. Talcum powder
e. Pencil lead​

Answer 1

sand is the main ingredient used to make the glass for the mirror it has to be a special sand rich in the mineral called silica. telecum is a clay mineral composed of hydrated magnesium silicate with the chemical formula. A mixture of clay and grafite are made pencil lead .