A. H2SO4
B. NaOH
C. NH3
D. HCl
Related Mcqs:
- The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?
A. Ammonium hydroxide
B. Sodium carbonate
C. Sodium hydroxide
D. Ammonium carbonate - The most detrimental impurity in high pressure boiler feed water is ___________________?
A. Suspended salt
B. Dissolved salt
C. Silica
D. Turbidity - When an isolated thermodynamic system executes a process ___________________?
A. Work is done
B. Heat transfer takes place
C. Mass flow occurs across the boundary of the system
D. No chemical reaction takes place within the system - Carbon supply in pack carburising process is in the form of ___________________?
A. Charcoal
B. Calcium carbide
C. Hydrocarbon oil
D. Graphite - Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?
A. Output & fineness
B. Velocity
C. Both A. & B.
D. None of these - The pressure outside a bubble/droplet of liquid is ________________ the internal pressure?
A. Greater than
B. Less than
C. Equal to
D. Unpredictable; depends on the bubble size - A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?
A. 10
B. 30
C. 50
D. 80 - Gage pressure within a spherical droplet of a fluid is ‘p’. What will be gage pressure within a bubble of the same size & of the same fluid ?
A. p
B. 2 p
C. 0.5 p
D. 0.25 p - The delivery pressure of boiler feed water pump compared to the boiler steam pressure is___________________?
A. Same
B. Slightly less
C. Slightly more
D. Much more - Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?
A. Decreases
B. Increases
C. Remain same
D. May increase or decrease
