Related Questions

Which of the following adsorbant is used in the refinning of sugar?
A Bone charcoal
B Wood charcoal
C Silica gel
D Activated clay
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant
A Increases
B Decreases
C Remains unchanged
D Increases exponentially
Which one of the following oxides of Nitrogen is also known as Laughing Gas?
A NO2
B N2O5
C NO
D N2O
Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
A acid rain
B brackish water
C forest fire
D soil pollution
Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere when
D ozone is formed in the atmosphere ,and when
Choose the correct option to replace the quotation part of each sentence. Often visible as smog, 'ozone is formed in the atmosphere from' hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere, and when
D ozone, formed in the atmosphere when
When water emulsion is used as the fuel in SI engine the emission of nitrogen oxides reduces significantly, this is due to
A Water reacts with nitrogen oxides
B Water does not contain nitrogen
C The combustion temperature decreased
D The combustion temperature increased
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
A Alumina
B Platinum
C Vanadium pentoxide
D Iron oxide
Tolerable limit of nitrogen oxides in air is __________ ppm.
A 0.1
B 1
C 5
D 25
The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
A 60
B 30
C 95
D 100

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