Fuels_ Furnace And Refractories Technology — Part 1 MCQs with Explanations

80 - 90% is the correct answer to “How much is the percentage of fixed carbon in semi-anthracite”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Up to 60 is the correct answer to “How much is the percentage of fixed carbon in lignite”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

5000 kcal/kg is the correct answer to “How much is the calorific value of lignite coal”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

8500 to 8800 kcal/kg is the correct answer to “How much is the calorific value of semi-anthracite coal”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Surface to interior of material is the correct answer to “During conventional heating process, the heat flow in materials take place”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

lengthens the flame is the correct answer to “During combustion of gaseous fuels, deficiency of air”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

magnesia is the correct answer to “The refractory lining of the bottom in a basic electric are furnace in made of”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

ZrO2 is the correct answer to “What is chemical formula of zirconia”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

1780°C is the correct answer to “The fusion temperature of Silica is”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Blast furnace is the correct answer to “The example of furnace which employ induced draught”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

radiation is the correct answer to “In a furnace, with heating element temperature at 1700° C, the dominant mechnaism of heat, transfer will be”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

2600°C is the correct answer to “The fusion temperature of Zirconia brick is”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Fussain is the correct answer to “Which of the following petrographic constituents of coal is non-coking”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

P-2, Q-1, R-4, S-3 is the correct answer to “Match the following: Group 1 Group 2 P. Blast furnace 1. Lime Q. Rotary kiln 2. Pig iron R. Continuous casting 3. Heat exchanger S. stoves 4. Billets”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

used for laboratory purpose to do the heat treatment of materials is the correct answer to “The muffle furnace is”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

> 120 is the correct answer to “Pensky-Marten apparatus is used for those oils, whose flash points are . . . . . . . . °F.”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

3Al2O3.2SiO2 is the correct answer to “What is chemical formula of mullite”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

peat is the correct answer to “Which coal forms first during coalification process”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

chrome magnesite is the correct answer to “L.D. Converters are generally lined with”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Anthracite-Peat is the correct answer to “Which is the correct option for highest and lowest grade of coal among given combination”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Making iron from inferior quality of ore is the correct answer to “The mini blast furnace is used for”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

22.8 is the correct answer to “Hot gases from a furnace are entering at the base of a 30m high tubular vertical chimney at 600°C. The density of air and furnace gases at respective temperatures are 1.165 and 0.405 kgm -3 respectively. The static draft produced by the chimney is . . . . . . . . Pa.”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

All are correct is the correct answer to “Refractories are materials which”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

1900°C is the correct answer to “The fusion temperature of Chromite brick is”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Carbon block refractory is the correct answer to “Which of the following is /are neutral refractories”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

All are correct is the correct answer to “Pick up correct statement about Bessemer converter”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

R > P > Q > S is the correct answer to “Arrange the following refractory materials in ascending order of their melting points. P. Alumina Q. Silica R. Carbon S. Zirconia”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Both A and B is the correct answer to “Which type of fuel is used to heat the Blast furnace stove”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Neutral refractories is the correct answer to “Those refractories which are neither attacked acid slag nor by basic slags are called”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

methane is the correct answer to “Natural gas is essentially”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

clinkering tendency is the correct answer to “Softening temperature of coal ash is a measure of the . . . . . . . . of coal.”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Neutral refractories is the correct answer to “Thorium, zirconium, platinum, nickel, iron, molybdenum, tungsten are the . . . . . . . .”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

moisture, volatile matter, ash & fixed carbon is the correct answer to “Proximate analysis of coal determines its . . . . . . . . content.”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

yield of carbonized products is the correct answer to “Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

None of these is the correct answer to “Basic oxygen furnace is used for”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Alternative routes of iron making is the correct answer to “The Rotary kiln furnace is used for”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Both A and B is the correct answer to “The example of regenerative furnace is/are”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

silica is the correct answer to “The refractory brick which has good thermal shock resistance at high temnperature but cracks on cooling below 400°C is”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

is mainly for producing the smokeless domestic coke is the correct answer to “Low temperature carbonization”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.

Graphite-alumina composite is the correct answer to “Which of the following refractory materials is not used in the BOF (LD) working lining”. This question is standard in competitive examination syllabi for Fuels_ Furnace And Refractories Technology.