Chemistry – Basics Principal and Processes of Isolation of Elements – TEST (MCQ Maharashtra HSC Board)
Chemistry – Basics Principal and Processes of Isolation of Elements – TEST (MCQ Maharashtra 12th Board)
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#1 In ____ metal oxide is reduced to metal
#2 Bismuth tin lead and mercury are separated from their crude by:
#3 Highest carbon content iron is:
#4 The ore which contains copper and iron both:
#5 The product of zinc obtained after roasting process is:
#6 Pine oil is used in the concentration of zinc blend in ___ process
#7 The impurities of iron oxide from zinc blend are separated by:
#8 Hot air reacts with coke to form carbon monoxide in:
#9 In Hall’s process or dry process bauxite is fused with
#10 Pure zinc is deposited on the ___ cathode:
#11 Zone refining is used to prepare ultra pure samples of:
#12 Zinc sulphide is roasted in reverberatory furnace has temperature of about:
#13 In extraction of iron limestone is used for:
#14 Ultra pure metals are non metal are obtained by:
#15 In polling the green logs of wood is used to liberate: