Which of the following is the most detrimental for water used in high pressure boiler ?

A. CO2
B. H2
C. SO3
D. N2

A. Petroleum refineries
B. Coal based thermal power plants
C. Pulp and paper plant
D. Metallurgical roasting & smelting plant

A. CO
B. CO2
C. NO
D. Hydrocarbons

A. 1
B. 4
C. 8
D. 12

A. 0.01
B. 0.1
C. 1
D. 4

A. Of clotting of blood
B. Of jamming of respiratory tract
C. It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it
incapable of absorbing oxygen
D. It forms CO2 by combining with oxygen present in the blood