"Hasen clever process" is the commercial process of which agent ?
[ A ] Caustic soda
[ B ] Nitric acid
[ C ] Sulphuric acid
[ D ] Bleaching powder
Answer : Option D
Explanation :
Bleaching powder is prepared on the large scale by Hasen Clever process. The plant consists of a number of iron cylinders in which chlorine is brought in contact with slaked lime [Ca(OH) 2
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