Analysis of Coal and Selection Online Exam Quiz

Analysis of Coal and Selection GK Quiz. Question and Answers related to Analysis of Coal and Selection. MCQ (Multiple Choice Questions with answers about Analysis of Coal and Selection

% of nitrogen can be determined by the process ___


A : dulong's formula

B : orsat's apparatus

C : kjeldahl's method

D : fractional distillation

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An increase in 1% of percentage of oxygen decreases the calorific value by __


A : 1.70%

B : 2.70%

C : 3.70%

D : 4.70%

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During metallurgical operations, n2 causes ___


A : hardness to sample

B : softness to sample

C : moisture to sample

D : heat to sample

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From the raw piece, coal is manufactured by __


A : under crushing

B : over crushing

C : perfectly crushed

D : powdered

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High % of moisture is undesirable because ___


A : increases the cost of transport

B : increases the cost of calorific value

C : increases the cost of efficiency

D : decreases the cost of storage cost

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In determination of % of C and H, the coal is burnt in the stream of ___


A : pure sulphur

B : pure nitrogen

C : pure alcohol

D : pure oxygen

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In proximate analysis, which of the following elements can be found?


A : % of moisture content

B : % of carbon

C : % of hydrogen

D : % of nitrogen

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The % of the fixed carbon can be given by ___


A : %C=[loss in weight due to removal of C/weight of coal sample]*100

B : %C=[weight of coal/12*100]

C : %C=100-(% of ash)

D : %C=100-(% of moisture+% of volatile matter+% of ash)

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The moisture content in the coal can be given by heating the coal for ___ hours.


A : 2

B : 1

C : 4

D : 6

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The moisturizing the coal before introducing into furnace is called as ___


A : moisturizing

B : filtering

C : tempering

D : combustion

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