Engineering Chemistry Question Papers Online Exam Quiz
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Determine the water equivalent of the bomb calorimeter apparatus which gave following data during experiment: Weight of benzoic acid taken = 2.12 gm, Weight of water taken in calorimeter = 2.5kg, Initial temperature= 16.970, Final temperature = 18.650, Cooling correction = 0.035 0C, fuse wire correction = 20 calories and cotton thread correction = 2.2 calories? (Calorific value of benzoic acid=6324)
Options
A : 7253.22 gm
B : 8366.50 gm
C : 7830.36 gm
D : 5330.36 gm
In a bomb calorimeter experiment, following data was obtained: x = 0.85gm, W = 2.5kg, w = .5kg, observed rise in temperature = 2.25 0C, tA = 38.6 calories, tF = 6.8 calories, tT = 1.9 calories and tC = 0.05 0C. Calculate net calorific value if the coal contains 10 % hydrogen?
Options
A : 7533.7 cal/gm
B : 5704.655 cal/gm
C : 8062 cal/gm
D : 8.062 cal/gm
Which of the following correction of bomb calorimeter is added to the observed raise in temperature?
Options
A : Acid correction
B : Fuse wire correction
C : Cotton thread correction
D : Cooling correction
How is the heat liberated in fuse wire correction?
Options
A : By the breakage of fuse wire
B : Due to the material of fuse wire
C : Due to the ignition of fuse wire
D : Due to the length of fuse wire
Which of the following correction are obtained in the largest amount in bomb calorimeter?
Options
A : Fuse wire correction
B : Acid correction
C : Cotton thread correction
D : Cooling correction
For which of the following correction we should use a larger sample mass?
Options
A : Fuse wire correction
B : Cotton thread correction
C : Cooling correction
D : Acid correction
On what basis does the acid correction is measured in bomb calorimeter?
Options
A : Gases present in the bomb
B : Due to formation of the compound after adding water in the bomb
C : Due to the presence of excess oxygen
D : Due to the material of the bomb
To calculate the calorific value of coal using bomb’s calorimeter, which of the following compound are formed after the bomb is removed from the calorimeter?
Options
A : H2S and CO2
B : H2SO4 and HNO3
C : H2SO4 and NO2
D : SO2 and HNO3
The correct cotton thread used for firing the charge is calculated from the weight of wet cotton thread.
Options
A : True
B : False
C :
D :
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