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31
Sulphur addition in soap is done to
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Answer: Option B
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32
Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
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Answer: Option B
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33
Roasting of metallurgical ores is done mainly to
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Answer: Option D
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34
Lurgi coal gasifier is a pressurised __________ bed reactor.
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Answer: Option A
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35
Manufacture of phthalic anhydride uses __________ as a catalyst.
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Answer: Option C
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36
Pure rectified spirit contains about __________ percent alcohol.
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Answer: Option C
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37
Vanillin is a type of
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Answer: Option C
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38
Varnish does not contain
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Answer: Option B
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39
Varnish does not contain
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Answer: Option A
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40
In the production of soda ash by Solvay process, the by-product is
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Answer: Option A
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