A. Calorific value increases
B. Swelling number decreases
C. Swelling number increases
D. Bulk density decreases
Correct Answer: Swelling number decreases ✔
Last Updated: March 08, 2019
Related MCQs
- Which of the following is not used as a binder in coal briquetting ?
- Which of the following fuel gases has the highest calorific value ?
- In Orsat’s apparatus, ammoniacal cuprous chloride is used for selectivity absorbing__________?
- Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O) ?
- Abel apparatus is used for those oils, whose flash points are __________°F?
- Assam (India) coals suffers mainly from the disadvantage of high __________ content?
- High temperature in gasification of coal favours__________?
- During its calorific value determination by bomb calorimeter, coal is combusted by __________?
- Kopper-Totzek coal gasifier__________?
- Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F?
- The main product of high temperature carbonisation of coal is__________?
- Which of the following is not a manufactured fuel ?
- A coal having high amount of volatile matter__________?
- Yield of charcoal in high temperature carbonisation of wood is about __________ percent?
- Fixed carbon in coal is defined as__________?
- During combustion of gaseous fuels, deficiency of air__________?
- Calorific value of furnace oil is about __________ Kcal/kg?
- Air/gas ratio for complete combustion will be the highest for__________?
- Which of the following is not a by-product recovered in a high temperature coal carbonisation plant ?
- The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always__________?
- A good coking coal should have high __________ content?
- Gross & net calorific value is the same for__________?
- Removal of hydrogen from coke oven gas __________?
- Fossil fuels mean__________?
- Deficiency of combustion air during combustion of a gaseous fuel__________?
- Junker’s calorimeter is used to determine the calorific value of__________?
- Which of the following can be made into briquettes without the use of a binder ?
- Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C?
- ‘Mixed gas’ used in steel plants is a mixture of__________?
- Preheating of combustion air is done to __________?
- The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C ?
- Coal containing large quantity of __________ are difficult to wash?
- Narrow coke ovens as compared to wider coke ovens__________?
- Bomb calorimeter is used to determine the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.) ?
- ‘Fuel’ can be defined as a substance which produces heat by__________?
- Actual flame temperature is always lower than the adiabatic flame temperature, because there is__________?
- Fuel for a fast breeder nuclear reactor is__________?
- C.V. (kcal/Nm3) of gaseous fuels __________ with increase in molecular weight?
- Volatile matter content of metallurgical coke may be around __________ percent?
- Coking coals are invariably__________?
- Ratio of primary air to secondary air increases with increase in the rank of coal, because the__________?
- Oxygen required for theoretically complete combustion of 1 Nm3 methane is __________ Nm3?
- Calorific value of wood gas is about __________ kcal/Nm3?
- The maximum adiabatic flame temperature in air as compared to that in pure oxygen is__________?
- Ammonia content in raw coke oven gas is about __________ gm/Nm3?
- Presence of __________ in a dry gaseous fuel does not contribute to its calorific value?
- For maximum discharge through a chimney, its height should be__________?
- Which of the following has the highest flame speed ?
- Which of the following fuels is generally not used in thermal power plant boiler firing ?
- Use of excess of combustion air in the combustion of fuels results in__________?
- Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the__________?