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The accumulation in a steady state combustion process, burning 1 kg mole of carbon with 1 kg mole of oxygen thereby producing 1 kg mole of carbon dioxide, is __________ kg mole.
A
1
B
0
C
16
D
44
Correct Answer:
0
In the carbonation of a soft drink, the total quantity of carbon dioxide required is the equivalent of 3 volumes of gas to one volume of water at 0⁰C and atmospheric pressure. Calculate (i) the mass fraction and (ii) the mole fraction of the CO2 in the drink, ignoring all components other than CO2 and water. Basis 1 m3 of water = 1000 kg Volume of carbon dioxide added = 3 m3 From the gas equation, pV = nRT 1 x 3 = n x 0.08206 x 273 n = 0.134 mole. Molecular weight of carbon dioxide = 44 And so weight of carbon dioxide added = 0.134 x 44 = 5.9 kg
A
6.9 × 10-3, 3.41 × 10-3
B
8.9 × 10-3, 2.41 × 10-3
C
5.9 × 10-3, 2.41 × 10-3
D
9.9 × 10-3, 3.41 × 10-3
The admission ticket for an exhibition bears a password which is changed after every clock hour based on set of words chosen for each day. The following is an illustration of the code and steps of rearrangement for subsequent clock hours. The time is 9 a.m. to 3 p.m. Day's first password : First Batch ----- 9 a.m. to 10 a.m. is not ready cloth simple harmony burning Second Batch ----- 10 a.m. to 11 a.m. ready not is cloth burning harmony simple Third Batch ----- 11 a.m. to 12 noon cloth is not ready simple harmony burning Fourth Batch ----- 12 noon to 1 p.m. not is cloth ready burning harmony simple Fifth Batch ----- 1 p.m. to 2 p.m. ready cloth is not simple harmony burning and so on. If the password for 11 a.m. to 12 noon was --- "soap shy miss pen yet the she", what was the password for the first batch ?
A
pen miss shy soap she the yet
B
shy miss pen soap yet the she
C
soap pen miss shy she the yet
D
miss shy soap pen she the yet
Evaporation of n-propyl alcohol into carbon dioxide for the same geometrical arrangement of tube diameter (d) of 38 mm when the carbon dioxide flows at a maximum velocity (ug) of 10 m/s at 300 K and 1 atm. Properties of dilute mixtures of propyl alcohol in carbon dioxide at 300 K and 1 atm are: Molecular weight (M) = 44 gm/mole, density (ρ) = 1.8 kg/m3 , Viscosity (μ) = 1.49×10-5 kg/m.s, diffusivity (DAB) = 7.6×10-6 m2 /s and universal gas constant (R) = 8.314 J/mole.K. Estimate the Reynolds number. Nu = 0.453Re0.568 Pr0.36, where 10 < Re (= ρug d/μ)<106 and 0.7 < Pr < 500
A
45906.04
B
40906.05
Solution-1 containing 40% nitric acid and 20% carbon dioxide at the rate F combines with Solution-2 containing 30% nitric acid and 40% carbon dioxide at the rate D, the product formed contains 30% nitric acid and 20% carbon dioxide at the rate P, If P = xF what is x?
A
1
B
2
C
3
Solution-1 containing 40% acetic acid and 20% carbon dioxide at the rate F combines with Solution-2 containing 20% acetic acid and 40% carbon dioxide at the rate D, the product formed contains 30% acetic acid at the rate P, what is the percentage of carbon dioxide in product?
A
10%
B
20%
C
30%
Pseudo steady state is not truly steady state but for convenience is treated as steady state. The above statement for a process is
A
Correct
B
Incorrect
C
Never incorrect
D
None of the mentioned
Two feeds, 10 mole with 5 J/mole and 20 mole with 15 J/mole, product contains two streams, 5 mole with 10 J/mole and P with 25 J/mole, what is the value of P?
A
10 mole
B
12 mole
C
15 mole
Two feeds, 5 mole with 25 J/mole and F with 5 J/mole, product contains two streams, 5 mole with 10 J/mole and 10 mole with 15 J/mole, what is the value of F?
A
10 mole
B
15 mole
C
20 mole
The combustion equations of carbon and carbon monoxide are as follows:
C + O
2
= CO
2
, ΔH = -394 kJ/kg.mole
CO + $$\frac{1}{2}$$O
2
= CO
2
, ΔH = -284.5 kJ/kg.mole
The heat of formation of CO is __________ kJ/kg.mole.
A
-109.5
B
+109.5
C
+180
D
+100
In a well aerated and agitated microbial culture, the 'supply' of oxygen is equal to 'demand' (uptake) of the growing culture. The K
L
a for such a system will be (K
L
a = volumetric mass transfer coefficient, C* = dissolved oxygen concentration in liquid in equilibrium with gaseous oxygen, C = instantaneous value of dissolved oxygen concentration, 'r' = specific oxygen uptake rate per unit weight of cells, X = dry weight of the cells per unit volume)
A
$$\frac{{\left( {rX} \right)}}{{\left( {C* - C} \right)}}$$
B
$$\frac{{\left( r \right)}}{{X\left( {C* - C} \right)}}$$
C
$$\frac{{\left( {C* - C} \right)}}{{\left( {rX} \right)}}$$
D
$$\frac{{\left( X \right)}}{{r\left( {C* - C} \right)}}$$