B. Oxidation/scaling

C. Sulphur penetration

D. Decarburising

A. Coke oven

C. Blast furnace stoves

D. Beehive coke oven

A. Graphite

B. Glass

C. Cork

A. SO2 (dry or wet)

B. Chlorine (dry or wet)

C. Hydrochloric acid

A. An alloy of lead and tin

C. An elastomer

D. Aluminium foil clad with Bakelite

B. Soaking pit

C. Reheating furnace

D. Open hearth furnace

A. Coke oven gas

B. Pulverised coal

C. Furnace oil

A. Calcination of limestone & dolomite

B. Cement manufacture

D. Neither A. nor B.

A. Inconel

B. Chlorinet 2 alloy

D. Monel

B. Cast iron

C. Stainless steel

D. Mild steel

A. Physical nature, ash content and fineness of the coal

B. Type of burner and combustion chamber

C. Amount of excess air supplied and load on the boiler

A. Pure rubber is as useless as pure gold as a material of construction

C. Copper has poor weldability

D. Reinforced plastics are made from both thermoplastic as well as thermosetting plastics

B. Aluminium

C. Mild steel

D. Stainless steel 316

A. Thickness of heating stock

C. Temperature of flue gas

D. Thermal conductivity of stock

B. Resistance

C. Arc

D. Low frequency induction

A. Coke oven heating chamber

B. Blast furnace

C. Rotary kilns

A. Solid fuels

B. Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.)

D. Neither A. nor B.

B. Electron diffraction

C. X-ray

D. Metallurgical microscope

A. Furnace pressure in conjunction with draft in flues

B. Difference in density between hot and cold gases

D. Change in volume during a change of temperature

B. The costliest of all the alloys of nickel

C. Not suitable for making kitchen utensils

D. Not used in cast and wrought forms

A. Momentum transfer in laminar flow results from velocity gradient

B. A fluid in equilibrium is not free from shear stress

C. The viscosity of a non-Newtonian fluid is a function of temperature only

A. Low forced draft & fuel bed temperature

C. Low reactivity of carbonised residue containing high proportion of iron & sulphur

D. Thick firebed and preheated primary air

A. Toughness

B. All A., B. & C.

C. Stiffness

A. Near the top of the chimney

B. Anywhere after the I.D. fan

C. After the I.D. fan

A. Monel

B. Rubber

D. Nickel

A. Stainless steel is nothing but chromium coated steel

C. Rusting of iron is not electrochemical in nature

D. Plastic deformation of a material is its temporary distortion under the action of applied stress

A. Are lighter & compact

C. All A., B. & C.

D. Store smaller quantity of waste heat

A. Whitish in color

B. Strong and hard

D. Brittle

B. 25

C. 10

D. 65

A. Waste heat

C. Water tube

D. Fire tube

A. Is lined with rubber

B. Is lined with lead

C. Is lined with acid-proof bricks

A. Permits the use of controlled atmosphere for the protection of stock

B. Retards the heat transfer

C. Assists in temperature equalisation in the charge

A. Annealing furnace

B. Blast furnace

C. Steam boiler

A. Gas velocity in furnace

B. Size of the furnace

D. Ratio of wall surface to surface of stock

A. Phenol

B. Formaldehyde

D. Acetic acid

A. None of these

B. Regenerator

D. Metallic recuperator

A. For a non-Newtonian fluid, a straight line passes through the origin in a plot between shear

C. ess and shear gradient

D. Thin lubricating oil is an example of a non-Newtonian fluid

E. Human blood is a Newtonian fluid

A. Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by

B. nge of direction)

C. Burner design (thoroughness of mixing versus stratification)

E. Air supplied and furnace temperature

A. Use of non-preheated combustion air

B. Use of pulverised solid fuels

C. Use of excessive positive draft in the furnace

B. Updraft kiln

C. Continuous furnace

D. None of these

B. Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero

C. The internal energy of an ideal gas depends only on its pressure

D. Melting of ice involves increase in enthalpy and a decrease in randomness

A. Protect the charge from the effects of the products of combustion

B. Smooth out temperature inequalities on the combustion side of the muffle wall

D. Neither A. nor B.

B. ditions of flow</strong>

C. Fanning friction factor is inversely proportional to Reynolds number always

D. ume to the volume of voids in the bed

E. Mach number in an incompressible fluid is always unity

F. The property of a randomly packed bed (with raschig rings) is given by the ratio of the total

A. Soaking pit

C. Walking beam reheating

D. Open hearth

A. Nature of atmosphere

B. Temperature

D. Time

A. A compound of carbon and iron

B. Characterised by an orthorhombic crystal structure

D. Fe3C chemically

A. Soaking pit

B. None of these

C. Reheating furnace

A. Cast iron

B. Karbate

C. Monel

A. Hastelloys

C. Inconel

D. Nimonics

A. Wood

C. Concrete

D. Porcelain