Question.
Name the important raw materials used in the manufacturing of cement?
( Chapter - 6 Manufacturing Industries, Cass X NCERT Contemporary India -II )
Answer.
Cement is essential for construction activities such as building houses, factories, bridges, roads, airports, dams, and other establishments.
The first cement plant was set up in Chennai in 1904.
Cement is one of the heavy industries and requires heavy and bulky raw materials.
Important raw materials used in the manufacturing of cement are:
Limestone
Gypsum
Silica
magnesium oxide
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