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71
Fusion of bauxite and __________ produces high alumina cement.
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Answer: Option B
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72
Fusion of limestone and __________ produces high alumina cement.
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Answer: Option B
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73
Which of the following, when pyrolysed, produces perchloro-ethylene?
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Answer: Option C
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74
Naphthalene is removed from coke oven gas by
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Answer: Option C
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75
Hydrophilic group of a soap or detergent solution is
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Answer: Option C
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76
__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
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Answer: Option A
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77
High temperature carbonisation of coal takes place at __________ °C.
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Answer: Option C
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78
Low temperature carbonisation of coal takes place at __________ °C.
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Answer: Option C
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79
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
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Answer: Option B
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80
Comparing sulphate process with sulphite process, we find that __________ in the later.
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Answer: Option B
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