Question
a.
Caustic embrittlement of boiler's metallic parts is caused by high concentration of caustic soda in boiler feed water.
b.
Cooling and freezing of water kills the bacteria present in it.
c.
With increasing boiler operating pressure of steam, the maximum allowable concentration of silica in feed water goes on decreasing.
d.
Dissolved oxygen content in high pressure boiler feed water should be nil.
Posted under Basic Chemical Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Pick out the wrong statement.
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. 'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.
View solution
Q. The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
View solution
Q. Pick out the wrong statement.
View solution
Q. The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by
View solution
Q. Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by
View solution
Q. Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?
View solution
Q. Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is
View solution
Q. Dust collection efficiency of a cyclone separator depends upon its
View solution
Q. Which of the following is the most detrimental for water used in high pressure boiler ?
View solution
Q. Turbidity of water is an indication of the presence of
View solution
Q. Presence of excess flourine in water causes
View solution
Q. Siderosis is a disease caused by the inhalation of __________ dust.
View solution
Q. Which of the following pollutants is not emitted during volcanic eruptions ?
View solution
Q. Ionisation potential employed in the industrial electrostatic precipitator is of the order of
View solution
Q. The widest explosive limit is of __________ , thereby making it the most explosive gas.
View solution
Q. Aerobic biological oxidation ponds used for the purification of polluted water
View solution
Q. Polluted water having low BOD are most economically treated in
View solution
Q. Tri-sodium phosphate is used in boiler water treatment to reduce
View solution
Q. Scale formation in boiler is controlled by
View solution
Q. Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
