Related Questions

The soil which bleaches quickly due to rain, is called
A Red
B Laterite
C Black
D Alluvial
Activated Charcoal is used to remove colouring matter from pure substances by
A Bleaching
B Oxidation
C Adsorption
D Reduction
Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about
A 0.1
B 1
C 2.5
D 3.5
Sulphur Dioxide pollution is indicated by an excessive growth of which of the following?
A Algal Blooms
B Lichens
C Bryophytes
D Protozoa
Bleaching action of moist sulphur dioxide is because of its
A Basic property
B Acidic property
C Oxidising property
D Reducing property
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
A 1
B 5
C 50
D 500
Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to
A Increase its smoke point
B Improve its oxidation stability
C Decrease the breathing loss
D None of these
Sulphur dioxide level in the atmosphere can be reduced by using
A More efficient car engines
B Catalytic converters in industry
C Static electricity to attract it in factory chimneys
D Low - sulphur fuels
Sulphur dioxide present in the industrial chimney exhaust causes
A Respiratory and lung disease
B Reduction in plant's productivity owing to acid rain
C Corrosion building materials
D All of the above
The freezing point of sulphur dioxide is
A -56.6°C
B -75.2°C
C -77.7°C
D -135.8°C

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