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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

Revision: Applied Chemistry Science SSLC (English Medium) Class 9 Tamil Nadu Board of Secondary Education

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Definitions [4]

Define Drug.

According to the World Health Organisation (WHO),
A drug is a substance or product that is used or intended to be used to modify or explore physiological systems or pathological states for the benefit of the recipient.

Define antibiotic.

  • Carbon compounds obtained from some bacteria and fungi for destroying or preventing the growth of harmful micro-organisms are called ‘Antibiotics’.
  • Examples of antibiotics: Penicillin, ampicillin, 
Definition: Antibiotics

Carbon compounds obtained from certain bacteria and fungi that destroy or inhibit the growth of harmful microorganisms and are used in the treatment of infectious diseases is called antibiotics.

Define Pesticides

According to the World Health Organisation (WHO),
Pesticides are chemical compounds that are used to kill pests including insects, rodents, fungi, and unwanted plants (weeds).

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