Related Questions

A photochemical reaction is __________ light.
A Initiated by
B Accompanied with emission of
C Catalysed by
D Used to convert heat energy into
Photochemical reaction rate does not depend significantly on temperature, because
A It is a reversible reaction
B It is an exothermic reaction
C The energy of reacting molecules exceeds the activation energy by absorption of light
D None of these
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
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 of the above
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
A Karbate
B Lead or glass
C Fireclay bricks
D PVC
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

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