Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is_______________?

Related Mcqs:

1. One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about_____________________?

   A. 0.19
   B. 0.33
   C. 0.40
   D. 0.67

2. 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is_________________?

   A. 1/2
   B. 1/3
   C. 1/4
   D. 2/3

3. What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?

   A. 2/3
   B. 1/3
   C. 1/2
   D. 1/3 × (298/273)

4. Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?

   A. 1.72
   B. 0.58
   C. 0.5
   D. 0.2

5. 1 gm mole of methane (CH4) contains_________________?

   A. 6.02 × 1023 atoms of hydrogen
   B. 4 gm atoms of hydrogen
   C. 3.01 × 1023 molecules of methane
   D. 3 gms of carbon

6. The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?

   A. Less than 100°C
   B. 100°C
   C. Between 100 and 110°C
   D. 110.6°C

7. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?

   A. Mixing
   B. Adsorption
   C. Wetting
   D. Complete wetting

8. An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?

   A. 0.2500
   B. 0.2528
   C. 0.5000
   D. 0.5055

9. Solutions which distil without change in composition are called________________?

   A. Ideal
   B. Saturated
   C. Supersaturated
   D. Azeotropic

10. The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be_______________?

    A. 10%
    B. 5%
    C. 18.18%
    D. 20%