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Subjects
Science CBSE
Class 8
Microorganisms - Friend and Foe
Textbook questions
43.
NCERT ExemplerXXII
Exercise condition:
2
m.
Give reasons for the following:
1. Fresh milk is boiled before consumption while processed milk is stored in packets and can be consumed without boiling.
Pasteurisation keeps all micro organisms for making it free of any contamination.
Pasteurisation kill all micro organisms for making it free of any contamination.
2. Raw vegetables and fruits are kept in refrigerators, whereas jams and pickles can be kept outside.
Low temperature that inhibits growth of microbes whereas Jams and pickles contain sugar and salt as preservatives.
High temperature that encourages growth of microbes whereas Jams and pickles contain sugar and salt as preservatives.
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