Related Questions

Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
A photochemical reaction is
A Accompanied with emission of light
B Catalysed by light
C Initiated by light
D All of the above
A photochemical reaction is __________ light.
A Initiated by
B Accompanied with emission of
C Catalysed by
D Used to convert heat energy into
Fill in the gaps : The new machine will significantly ------productivity because of its greater inefficiency compared to the old machine.
A increase
B decrease
C increasing
D decreasing
Fill in the gaps : The new machine will significantly ----productivity because of its inefficiency compared to the old machine.
A Increase
B decrease
C increasing
D decreasing
নিম্নলিখিত কোন গ্যাস photochemical ধোয়াসার (smog) জন্য দায়ী নয়?
A Hydrocarbon
B O3
C NO2
D CFC
Which of the following pollutants is the major contributor to photochemical smog?
A Peroxynitrates
B Hydroperoxides
C Nitrogen dioxide
D Ozone
Which of the following group of gases cause photochemical smog?
A Ozone, PAN and CO
B HC, NO and PAN
C O2, PAN, and NO2
D O3, PAN and NO2
In a photochemical smog, which gas is an eye and mucous membrane irritant?
A SO2
B O3
C CO2
D N2O
Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?
A Nitrogen oxides
B Hydrocarbons
C Both A & B
D Carbon monoxide

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