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Which of the following statements about dynamite is not correct?

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Which of the following statements about dynamite is not correct?

(a) It can be used for quarrying under water

(b) It does not need hard tamping

(c) It is cheaper than blasting powder

(d) It is very strong

The question was posed to me during an online interview.

This intriguing question comes from Stones topic in division Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

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The correct choice is (c) It is cheaper than blasting powder

Easy explanation: Dynamite is an explosive used in the blasting process. It is very strong and can be used for quarrying under water as well. It does not need hard tamping. It is much costlier than the blasting powder.

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