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51
Sillica percentage in basic rocks igneious type
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Answer: Option A
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52
Light metals are
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Answer: Option A
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53
UHV range of F grade coal is in KCal/kg.
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Answer: Option D
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54
More or less horizontal sheet of ignious rock extend, laterally into strata, introducing between bedding planes
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Answer: Option B
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55
Large ignious rockmass, differs from batholith, basin shape called
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Answer: Option D
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56
Crude benzole . . . . . . . . yeild on coal.
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Answer: Option D
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57
Minerals contain iron and magnesium known as
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Answer: Option B
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58
In the low temperature carbonisation the coal is heated in the absence of air to a temperature of about
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Answer: Option B
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59
Dull appearance coals, most impure band of coal.
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Answer: Option B
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60
In a fault; the area in which coal seam missing called
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Answer: Option C
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