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The use of explosives in order to convert rocks into small pieces of stones is done in ___________

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The use of explosives in order to convert rocks into small pieces of stones is done in ___________

(a) Wedging

(b) Heating

(c) Digging

(d) Blasting

This question was posed to me in a job interview.

My query is from Stones in chapter Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

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Right choice is (d) Blasting

Explanation: The use of explosives in order to convert rocks into small pieces of stones is done in blasting. Blasting is used for quarrying hard stones without having any fissures or cracks. Stones obtained by this method are generally of small size.

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