Related Questions

Faster rate of drying of moulded refractories results in high __________ of refractories.
A Green strength
B Voids
C Shrinkage
D Both B and C
For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.
A Sodium chloride
B Sodium carbonate monohydrate
C Anhydrous sodium sulphate
D Hypo
Resistance to slag attack of a refractory
A Depends on the nature of slag & refractory
B Decreases at higher temperature
C Decreases, if defective joints & cracks exist in the refractory
D All of the above
Magnesite bricks have poor resistance to attack by __________ slag.
A Lime
B Basic
C Acid
D None of these
A delivery car went from Candleford to Lark Rise and back at an average speed of23 miles per hour. If the distance from Candleford to Lark Rise is 1 mile, and the trip back too half as much time as the trip there, what was the average speed of the delivery car on the way to Lark Rise?
A 13
B 34
C 12
D 23
A delivery cart went from Candle ford to Lark Rise and back at an average speed of 2/3 miles per hour. If the distance from Candle ford to Lark Rise is 1 mile, and the trip back took half as much time as the trip there, what was the average speed of the delivery cart on the way to Lark Rise?
A 1/3
B 3/4
C 1/2
D 2/3
Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be
A Oxidising
B Neutral
C Either A or B
D Neither A nor B
At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to
A Decrease in mean free path
B Increased collision rate among molecules
C Increase in molecular attraction
D Increase in average molecular speed
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
A Condenser efficiency
B Vacuum efficiency
C Nozzle efficiency
D Boiler efficiency
Magnesite refractories are generally not used in the
A Electric furnace walls
B Steel melting furnace
C Open hearth furnace
D Burning zone of cement kilns

Next steps