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31
Which of the following processes is absent in glass manufacturing process?
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Answer: Option A
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32
A good quality coal should have
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Answer: Option D
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33
The ideal pulp for the manufacture of paper should have high __________ content.
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Answer: Option A
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34
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
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Answer: Option A
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35
Rotary kiln is not involved in the production of
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Answer: Option C
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36
Which is the main reducing agent during production of iron from iron ore in a blast furnace?
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Answer: Option B
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37
Which of the following is a constituent of vinegar?
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Answer: Option C
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38
The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
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Answer: Option B
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39
__________ acid is an unsaturated fatty acid.
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Answer: Option B
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40
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
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Answer: Option D
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