The common fungicide used in preventing growth of fungus on herbarium specimens is
A
Copper sulphate
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B
Lime
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C
Mercuric chloride
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D
Both A and B
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Solution
The correct option is C Mercuric chloride The common fungicide used in preventing growth of fungus on herbarium specimens is mercuric chloride. It is highly toxic compound that volatilizes slightly at ordinary temperature and appreciably at 100 degrees Celsius. Mercuric chloride is corrosive to mucous membranes and used as a topical antiseptic and disinfectant.