A. Vanadium pentoxide
B. No (Correct)
C. Alumina
D. Nickel
Chemical Engineering / Q&A
Which of the following has sodium bicarbonate as its main constituent ?
A. Baking soda
B. Baking powder (Correct)
C. Washing soda
D. None of these
In a furnace employing forced draught as compared to induced draught______________________?
A. Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced
B. The fan operates hot and hence blades are liable to corrosion and erosion
C. Positive pressure exists in the furnace (Correct)
D. None of these
Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of_____________ percent concentration?
A. 25-28
B. 52-54 (Correct)
C. 75-80
D. > 98
Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of__________________?
A. Cast iron
B. Stainless steel or glass lined vessel (Correct)
C. Karbate
D. Wrought iron
For the manometer set up shown in the figure, the pressure difference PA – PB is given by_________________?
A. (ρH – ρair)gH (Correct)
B. (ρH – ρL)gH
C. (ρH – ρL) gH + (ρL – ρair) . g(L – H)
D. (ρH – ρL) gL + (ρL – ρair)gH
Increasing the carbon content of steel_________________?
A. Reduces the upper shelf energy
B. Increasing the ductility transition temperature (Correct)
C. Decreases brittleness
D. Decreases hardness
Which of the following impurities in feed water for high pressure boiler is the most detrimental ?
A. Silica (Correct)
B. Dissolved oxygen
C. Suspended salt
D. Dissolved salt
Urea is formed only____________________?
A. In liquid phase (Correct)
B. In vapour phase
C. At very high temperature
D. At very low pressure (vacuum)
White cast iron as compared to grey cast iron is ________________?
A. More durable
B. Very brittle
C. Very hard
D. All A., B. & C.(Correct)