Related Questions

Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the
A Decolourisation of sugar
B Solvent recovery from air and gases
C Absorption of gases and vapor
D Electrode manufacture
The charcoal used to decolourise brown sugar solution is
A Wood charcoal
B Coconut charcoal
C Animal charcoal
D Sugar charcoal
Activated Charcoal is used to remove colouring matter from pure substances by
A Bleaching
B Oxidation
C Adsorption
D Reduction
Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
A Adsorbs
B Oxidises
C Reduces
D Converts
Charcoal can be made at home by burning
A wood in absence of air
B coal in absence of air
C coal in an insufficient supply of air
D wood in an insufficient supply of air
The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
A 15, 75, 10
B 75, 10, 15
C 10, 15, 75
D 10, 75, 15
What is a mixture of potassium nitrate, powdered charcoal and sulphur called?
A Glass
B Cement
C Paint
D Gun powder
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A Cementation process
B Crucible process
C Bessemer process
D Open hearth process
Gun powder, which is an explosive comprises of charcoal, sulphur and
A Glycerene
B Salt petre
C Nitro glycerene
D Dynamite
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.
A 10
B 25
C 50
D 75

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