Catalyst used in the ‘catalytic converter’ employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is__________________?

Related Mcqs:

1. During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum ?

   A. Idle running
   B. Acceleration
   C. Cruising
   D. Deceleration

2. The combustion equations of carbon and carbon monoxide are as follows: C + O2 = CO2, ΔH = – 394 kJ/kg .mole CO + ½ O2 = CO2, 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

3. Photochemical smog is formed from automobile exhaust ________________?

   A. By reaction of hydrocarbon & nitric oxide in presence of sunlight
   B. Appears only on sunny days
   C. Is harmful for crops and trees also besides causing eye irritation & asthma
   D. All A., B. & C.

4. Nitrogen oxides (NOx) is not produced in the ______________ industry?

   A. Nitric acid making
   B. Nitrogenous fertiliser
   C. Detergent
   D. Any of these

5. Tolerable limit of nitrogen oxides in air is _____________ ppm?

   A. 0.1
   B. 1
   C. 5
   D. 25

6. A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

   A. 13728 J
   B. 19206 J
   C. 4576 J
   D. 12712 J

7. In a mixture of benzene vapor and nitrogen gas at a total pressure of 900 mm Hg, if the absolute humidity of benzene is 0.2 kg benzene/kg nitrogen, the partial pressure of benzene in mm Hg is__________________?

   A. 180
   B. 60.3
   C. 720
   D. 200

8. 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

9. On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) ?

   A. (∂P/∂V)S = (∂P/∂V)T
   B. (∂P/∂V)S = [(∂P/∂V)T]Y
   C. (∂P/∂V)S = y(∂P/∂V)T
   D. (∂P/∂V)S = 1/y(∂P/∂V)T

10. Carbon monoxide is a pollutant, which causes_________________?

    A. Respiratory disease (e.g. asthma)
    B. Asphyxiation (suffocation) leading to death
    C. Retardation in crop growth
    D. Damage to building materials like marble