Engineering Chemistry Laboratory Viva voice questions and answers
15. Proximate analysis of coal
Chemistry (Lab) Practical : Viva – voice questions & answers
Engineering Chemistry Laboratory : 15. Proximate analysis of coal : Viva – voice questions & answers
VIVA – VOICE QUESTIONS & ANSWERS
15. Proximate analysis of coal
1.
What are fossil fuels?
Fuels
formed by the decomposition of dead plants and animals under earth.
2.
Name three fossil fuels.
Coal,
petroleum, natural gas.
3.
What are the types of analysis available for coal.
(i)
Proximate analysis
(ii)
Ultimate analysis
4.
What do you mean by proximate analysis of coal.
It
is the determination of moisture, volatile matter, ash and fixed carbon.
5.
What are the disadvantages of moisture in coal.
(i)
Reduces calorific value
(ii)
Ignition temperature is high.
6.
How is % fixed carbon calculate.
%
FC = 100 – (% moisture + % volatile matter + % ash)
7.
What are the determinations of ultimate analysis.
C,
H, S, H and O
8.
What are the significance of volatile content in coal.
(i)
More fuel gets distilled out
(ii)
Calorific value is low
(iii)
Ignition temperature is low
Engineering Chemistry Laboratory Viva voice questions and answers : Tag: : Chemistry (Lab) Practical : Viva – voice questions & answers - 15. Proximate analysis of coal
Engineering Chemistry Laboratory Viva voice questions and answers
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