Metallurgical Analysis MCQ Questions and Answers | Metallurgical Engineering Page-3 section-1

21.
Organic sulphur present in coal is found out by

A. bomb calorimeter

B. Eschka process

C. deducting the inorganic sulphur from total sulphur

D. Kjeldahl method

Answer & Solution Discuss in Board Save for Later

22.
Dean and stark apparatus is used in the determination of . . . . . . . . content in liquid fuels.

A. sediment

B. moisture

C. ash

D. sulphur

Answer & Solution Discuss in Board Save for Later

23.
Pick out the wrong statement.

A. Total carbon content of coal as determined in its ultimate analysis is more than the fixed carbon content as determined in its proximate analysis

B. Both the Eschka process and the bomb calorimeter process determine the total sulphur content of coal

C. Sulphate sulphur in coal is never present as CaSO₄2H₂O and 0.5%

D. Pyritic sulphur in coal is present between 0.2 to 0.3% and is generally present as FeS₂

Answer & Solution Discuss in Board Save for Later

24.
A sampling tube known as a thief, which has two concentric and close fitting tubes with matching holes or opening, is used for the sampling of

A. molten metal and alloys

B. sand and other fine materials

C. ores containing metallics

D. blast furnace grade coke

Answer & Solution Discuss in Board Save for Later

25.
Loss on ignition (LOI) of iron ore is determined by finiding the loss in weight of the sample by heating it first to 500°C for 5 minutes followed by its heating at . . . . . . . . °C, for 30 minutes.

A. 250

B. 750

C. 950

D. 1150

Answer & Solution Discuss in Board Save for Later

26.
Determination of methane present in coke oven gas by orsat apparatus, it is completely oxidised in contact with CuO to CO₂ and H₂O at a temperature of, . . . . . . . . . °C.

A. 350

B. 500

C. 800

D. 1050

Answer & Solution Discuss in Board Save for Later

27.
Determination of alumina (AI₂O₃) in iron ore is based on the selective formation of AIPO₄ from its acidic solution (with cone, HCl) by the addition of

A. phosphoric acid

B. calcium phosphate

C. barium phosphate

D. sodium or ammonium phosphate

Answer & Solution Discuss in Board Save for Later

28.
Determination of ash content of coal during its proximate analysis, the temperature of weighed coal sample is raised to 400 - 500°C in half an hour and maintained at the same level for further half an hour. The temperature is then raised to . . . . . . . . °C at which the sample is heated for one more hour before weighing it.

A. 775 ± 25

B. 875 ± 25

C. 975 ± 25

D. 1075 ± 25

Answer & Solution Discuss in Board Save for Later

29.
Eschka mixture used in total sulphur determination in coal comprises of a mixture of . . . . . . . . in 2 : 1 ratio by weight.

A. calcined MgO and anhydrous Na₂CO₃

B. calcined CaO and anhydrous Na₂CO₃

C. calcined MgO and anhydrous MgCO₃

D. calcined CaO and anhydrous MgCO₃

Answer & Solution Discuss in Board Save for Later

30.
Coning and quartering is a well known process of the sampling of

A. ore, coal and coke

B. molten metal

C. solid metallic scrap

D. fuel gases

Answer & Solution Discuss in Board Save for Later

Metallurgical Analysis MCQ Questions and Answers | Metallurgical Engineering

21. Organic sulphur present in coal is found out by

Answer & Solution

22. Dean and stark apparatus is used in the determination of . . . . . . . . content in liquid fuels.

Answer & Solution

23. Pick out the wrong statement.

Answer & Solution

24. A sampling tube known as a thief, which has two concentric and close fitting tubes with matching holes or opening, is used for the sampling of

Answer & Solution

25. Loss on ignition (LOI) of iron ore is determined by finiding the loss in weight of the sample by heating it first to 500°C for 5 minutes followed by its heating at . . . . . . . . °C, for 30 minutes.

Answer & Solution

26. Determination of methane present in coke oven gas by orsat apparatus, it is completely oxidised in contact with CuO to CO2 and H2O at a temperature of, . . . . . . . . . °C.

Answer & Solution

27. Determination of alumina (AI2O3) in iron ore is based on the selective formation of AIPO4 from its acidic solution (with cone, HCl) by the addition of

Answer & Solution

Answer & Solution

29. Eschka mixture used in total sulphur determination in coal comprises of a mixture of . . . . . . . . in 2 : 1 ratio by weight.

Answer & Solution

30. Coning and quartering is a well known process of the sampling of

Answer & Solution

21.
Organic sulphur present in coal is found out by

22.
Dean and stark apparatus is used in the determination of . . . . . . . . content in liquid fuels.

23.
Pick out the wrong statement.

24.
A sampling tube known as a thief, which has two concentric and close fitting tubes with matching holes or opening, is used for the sampling of

25.
Loss on ignition (LOI) of iron ore is determined by finiding the loss in weight of the sample by heating it first to 500°C for 5 minutes followed by its heating at . . . . . . . . °C, for 30 minutes.

26.
Determination of methane present in coke oven gas by orsat apparatus, it is completely oxidised in contact with CuO to CO₂ and H₂O at a temperature of, . . . . . . . . . °C.

27.
Determination of alumina (AI₂O₃) in iron ore is based on the selective formation of AIPO₄ from its acidic solution (with cone, HCl) by the addition of

29.
Eschka mixture used in total sulphur determination in coal comprises of a mixture of . . . . . . . . in 2 : 1 ratio by weight.

30.
Coning and quartering is a well known process of the sampling of