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Fuels and Combustion Quiz 5

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Fuels and Combustion Quiz 5

1 / 50

Main constituents of Benzol are ______?

2 / 50

Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if ___________?

3 / 50

In flue gas analysis by Orsat?s apparatus, carbon monoxide is absorbed by___________?

4 / 50

Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is ___________?

5 / 50

Main use of soft coke is as ________ fuel?

6 / 50

Laboratory gas is obtained by the cracking of______?

7 / 50

Low temperature oxidation of coal resulting from bad storage conditions does not decrease its________?

8 / 50

Increase in ash content of blast furnace coke__________?

9 / 50

L.D. converter gas (produced in steel plant) comprises mainly of _____?

10 / 50

In low temperature carbonisation (as compared to high temperature carbonisation) of coal___________?

11 / 50

Main constituents of purified Lurgi gas are_____?

12 / 50

In low temperature carbonisation of coal, the_________?

13 / 50

In general, the limit of inflammability/explosion limit of fuel gases is widened by the___________?

14 / 50

Moisture loss is determined by the _________?

15 / 50

In Lurgi coal gasifier_____?

16 / 50

Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called__________?

17 / 50

Largest constituent of blast furnace gas is___________?

18 / 50

Largest constituent of coke oven gas is__________?

19 / 50

Main constituent of natural gas is _________?

20 / 50

KOH solution used in Orsat apparatus absorbs______?

21 / 50

In flue gas analysis by Orsat?s apparatus, oxygen is absorbed by______?

22 / 50

In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the_______?

23 / 50

Incomplete combustion of fuel in the furnace is judged by high ______ of the flue gases?

24 / 50

Low temperature carbonisation of coal takes place at _______ ?C?

25 / 50

Low temperature oxidation of coal during storage does not decrease its___________?

26 / 50

Naphthalene is removed from coke oven gas by_________?

27 / 50

Main use of hard coke produced by high temperature carbonisation is in the ______ ?

28 / 50

Low temperature carbonisation of coal produces__________?

29 / 50

Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces ___________?

30 / 50

In high temperature carbonisation of coal compared to low temperature carbonisation ?

31 / 50

Mott and Wheeler test is conducted on coke to find its _______?

32 / 50

Mineral matter content (M) and ash content A. in coal are approximately related as ________?

33 / 50

Junker?s calorimeter is used to determine the calorific value of________?

34 / 50

Low temperature oxidation of coal is accelerated by the______?

35 / 50

Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an _______ bed gasifier?

36 / 50

Insitu theory and drift theory are related to the______?

37 / 50

Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of ______ ?C?

38 / 50

Ionisation potential applied across the electrodes of electrostatic tar precipitator is around_______?

39 / 50

In high temperature carbonisation (as compared to low temperature carbonisation) of coal_____?

40 / 50

In low temperature carbonisation of coal as compared to high temperature carbonisation ______ produced is less?

41 / 50

Main constituent of the gas produced from a gobar gas plant is_____?

42 / 50

Lignite is _____?

43 / 50

Initial pressure of oxygen introduced into the ?bomb? of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around ______ atm?

44 / 50

Low temperature oxidation of stored coal results in the_________?

45 / 50

In flue gas analysis by Orsat?s apparatus, carbon dioxide is absorbed by________?

46 / 50

Kopper-Totzek coal gasifier__________?

47 / 50

Lurgi coal gasifier is a pressurised _______ bed reactor?

48 / 50

Incomplete combustion of a fuel is characterised by the high ________ in the flue gas?

49 / 50

In Orsat?s apparatus, ammoniacal cuprous chloride is used for selectivity absorbing_________?

50 / 50

Mineral matter, ?M? and ash percentage ?A? in coal are roughly related as________?

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