A. Coke oven heating chamber

B. Open hearth furnace

D. Neither A. nor B.

A. Same

C. Either more or less; depends on the flue gas density

D. More

A. Beryllium

B. Thoria

D. Graphite powder

A. Butterfly

B. Globe

C. None of these

B. Very high cost

C. Very low strength to weight ratio

D. Scarce availability

A. Polypropylene

B. Polyurethane

C. Nylon-6

A. Excessive fly ash discharge from the stack

B. Erosion of induced draft fan blades

D. Higher power consumption in its transportation

A. Atmospheric pressure = absolute pressure ? gage pressure

B. Pressure decreases exponentially with elevation in an isothermal atmosphere

C. ections

D. As per Pascals law, the pressure at a point in a static or uniformly moving fluid is equal in all

A. Hydrochloric acid (10%)

B. Ferrous sulphate

D. Aqua regia

A. Diffusion

B. Outside mixing type

C. Rotary

B. Soften its surface

C. Improve its reliability

D. None of these

A. 5

B. 50

C. 80

A. Conduction

B. Either A., B. or C.; depends on the type of furnace

D. Convection

A. Reduces the flue gas temperature and makes the furnace atmosphere oxidising

C. Reduces the furnace draught

D. Increases the load on the induced draft fan

A. Hard wood

B. Cast iron

C. Lead lined stainless steel

A. Copper, cast iron & high silicon iron (14% Si)

B. Rubber (butyl and hard), silicone rubber & Teflon

D. Glass, graphite, porcelain & stoneware

A. 100

B. 50

D. 250

A. Thermal efficiency of the process

B. Sources of heat losses

D. Scope of reduction of heat losses

A. Concrete

B. Graphite

C. Zircaloy

A. 8

C. 0.2

D. 2

A. Waste heat boiler

C. Ceramic recuperator

D. Economiser

A. Soaking pit

B. Steam boiler

D. Reheating furnace

A. 80

C. 20

D. 65

A. Aluminium

B. Steel

D. Lead lined

A. None of these

B. Iron & mercury

D. Platinum & mercury

A. Is the lightest metal in common use

C. Is the hardest metal in common use

D. Cannot be scratched by finger nails

A. For producing zinc base die casting alloys

C. In its oxide form as pigments

D. As anode for corrosion prevention in boiler

A. Babbitt metal

B. Gun metal

C. Wood metal

B. Having notches in the specimen

C. Having scratches on the surface

D. Rise in temperature

A. None of these

C. Coke ovens

D. Annealing furnace

A. Annealing steel coil

B. Heating air

D. Steel melting

B. Aluminium and nickel

C. None of these

D. Aluminium, nickel and silicon

B. Speed of I.D. fan

C. Fuel gas pressure

D. Air pressure

A. Maintaining proper draught

B. Minimising heat losses from furnace walls

C. Waste heat recovery from flue gas

A. Silicone rubber, teflon, porcelain and wood

C. Nickel, monel, stainless steel and graphite

D. Aluminium, copper, high silicon iron

A. Tin exists in two allotropic forms

B. The predominant use of tin is in the form of coating for steel & copper alloys

C. Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature

A. Alloys are harder than their component elements

B. Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100C

C. Karbate is an acid resistant material of construction

A. Drop forging

B. Die block

D. Fish plates

A. Coke ovens

B. Open hearth furnace

D. Neither A. nor B.

A. 0.8 to 1.4

B. 0.1 to 0.35

D. 1 to 1. 5

A. Low thermal conductivity

B. High electrical conductivity

C. Silica

A. Rotary kiln

C. Reheating furnace

D. Tunnel kiln

A. Location of outlet ports and heating & combustion devices

C. Arrangement of heating stock in the furnaces

D. Fans

A. Simple hexagonal

C. None of these

D. Body centred cubic

A. Temperature of producer gas

B. C. V. of producer gas

C. Tar content in producer gas

A. L.D. converter

C. Glass melting tank

D. Soaking pit

A. Damper

B. Variation in the pitch of fan blades

C. Speed of the fan

A. Stainless steel

B. Potteries

C. Refractory bricks

A. A magnetic property

B. Its energy storage capacity

C. Its capacity to resist the flow of current

B. Reheating furnace

C. Rotary kilns

D. Reverberatory furnace