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81
__________ is the major constituent of the Portland cement.
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Answer: Option C
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82
The product obtained on mixing calcium oxide with water is called
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Answer: Option B
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83
Kaoline is a/an
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Answer: Option A
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84
Coke oven gas consists mainly of
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Answer: Option A
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85
Commonly used glass is known as the __________ glass.
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Answer: Option D
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86
Kopper-Totzek coal gasifier
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Answer: Option A
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87
Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
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Answer: Option C
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88
The amount of benzene present in pure benzol is about __________ percent.
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Answer: Option C
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89
Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
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Answer: Option A
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90
The yield of tar from high temperature carbonisation of dry coal is about __________ percent.
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Answer: Option A
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