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21
Which of the following petrographic constituents of coal is non-coking?
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Answer: Option D
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22
Match the following:
Group 1 Group 2
P. Blast furnace 1. Lime
Q. Rotary kiln 2. Pig iron
R. Continuous casting 3. Heat exchanger
S. stoves 4. Billets
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Answer: Option A
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23
The muffle furnace is
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Answer: Option A
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24
Pensky-Marten apparatus is used for those oils, whose flash points are . . . . . . . . °F.
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Answer: Option D
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25
What is chemical formula of mullite
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Answer: Option D
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26
Which coal forms first during coalification process
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Answer: Option A
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27
L.D. Converters are generally lined with
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Answer: Option C
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28
Main constituents of benzol are
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Answer: Option A
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29
Which is the correct option for highest and lowest grade of coal among given combination
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Answer: Option C
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30
The mini blast furnace is used for
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Answer: Option C
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