Refractory Technology MCQ Questions & Answers | Chemical Engineering Page-1 section-2

Section 1 Section 2 Section 3

1.
Dolomite bricks have good resistance to attack by

A. Molten steel

B. Iron oxide

C. Lime slag

D. None of these

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2.
Mullite is chemically represented by

A. Al₂O₃.2SiO₂

B. 3Al₂O₃.2SiO₂

C. Al₂O₃.SiO₂

D. 2Al₂O₃.3SiO₂

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3.
Chrome magnesite is not used in the

A. Inner lining of L.D. converter

B. Aluminium melting furnaces

C. Wear out lining of steel melting furnaces

D. All of the above

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4.
Magnesite bricks are used in those parts of furnaces, which are

A. Subjected to temperature fluctuation

B. Required to resist corrosive basic slag

C. Subjected to high load

D. None of these

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5.
Silicon carbide refractories are used in the

A. Muffle furnace

B. Zinc smelting furnace

C. Ceramic recuperators

D. All of the above

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6.
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to

A. Thermal spalling

B. Slag attack

C. Fusion under load

D. CO attack

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7.
To resist spalling tendency, a refractory should have

A. Greater diffusivity

B. Low specific heat

C. Low thermal co-efficient of expansion

D. All of the above

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8.
Refractory materials are never used in the construction of

A. Segar cones

B. Orton cones

C. Pressure vessels

D. Ovens & retorts

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9.
Refractoriness under load (RUL) is the most important property for the refractory bricks

A. At the hearth bottom of the furnace on which stock is placed

B. Used for furnace insulation

C. Used in the roof of the furnace

D. None of these

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10.
Carbon refractories are exclusively used in the

A. Hearth of blast furnace

B. Walls of coke oven

C. Regenerators of coke oven

D. Side wall of soaking pits

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Refractory Technology MCQ Questions & Answers | Chemical Engineering

1. Dolomite bricks have good resistance to attack by

Answer & Solution

2. Mullite is chemically represented by

Answer & Solution

3. Chrome magnesite is not used in the

Answer & Solution

4. Magnesite bricks are used in those parts of furnaces, which are

Answer & Solution

5. Silicon carbide refractories are used in the

Answer & Solution

6. Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to

Answer & Solution

7. To resist spalling tendency, a refractory should have

Answer & Solution

8. Refractory materials are never used in the construction of

Answer & Solution

9. Refractoriness under load (RUL) is the most important property for the refractory bricks

Answer & Solution

10. Carbon refractories are exclusively used in the

Answer & Solution

Read More Section(Refractory Technology)

1.
Dolomite bricks have good resistance to attack by

2.
Mullite is chemically represented by

3.
Chrome magnesite is not used in the

4.
Magnesite bricks are used in those parts of furnaces, which are

5.
Silicon carbide refractories are used in the

6.
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to

7.
To resist spalling tendency, a refractory should have

8.
Refractory materials are never used in the construction of

9.
Refractoriness under load (RUL) is the most important property for the refractory bricks

10.
Carbon refractories are exclusively used in the