Question

What are the uses of rocks question of 7 Standard ​

Answer 1

Answer:

• Making cement (limestone)
• Writing (chalk)
• Building material (sandstone)
• Bath scrub (pumice)

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Answer 2

Answer:Uses of rocks :-1) Broken or crushed rocks are used as aggregate in concrete, in road construction. 2) Broken or crushed rocks are also used as railway ballast. 3) Stone screenings are used as a natural substitute for sand. 4) Limestone is the basic material for the manufacture of lime, concrete and cement. 5) Rocks are used as blocks along the river and canal banks for preventing erosion. 6) For ornamental works in and outside the buildings, like blocks, slabs, and chips.