IndiaBIX

Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 4
21.
Pick out the wrong statement.
Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat.
Burning the fuel with theoretically required amount of pure oxygen results in attainment of maximum adiabatic flame temperature.
Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature.
Adiabatic flame temperatures of actual combustions are always less than the maximum values.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Preheating of a gaseous fuel results in increased
flame length
flame temperature
quantity of flue gas
ignition temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of
MgO & Na2CO3
MgSO4 & BaCl2
BaSO4 & NaCl
MgCO3 & NaCl
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Fossil fuels mean
solid fuels
liquid fuels
those fuels which are found in the crust of earth.
premature fuels with low calorific value.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Sometimes water is sprayed during coal charging in the coke oven, which helps in
prevention of clinker formation in the oven.
controlling the dust nuisance while charging the coal.
reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H2 in the gas (due to the endothermic reaction represented by C + H2O = CO + H2)
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers