Biology
A biology teacher asked her students to give two examples of antiseptics, which can be used to kill germs.
Prerna said: Boric acid and 40% Formalin.
Shreya said: Benzoic acid and Bordeaux mixture.
Rahul said: Carbolic acid and Boric acid.
Rishi said: Mercurochrome and Benzoic acid.
Who were correct ?
- Prerna and Shreya
- Shreya and Rahul
- Rahul and Rishi
- Rishi and Prerna
Health Aids
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Answer
Rahul and Rishi
Reason — Boric acid is used as an antiseptic for eyes and wounds. Benzoic acid is used as a mild antiseptic and food preservative. Carbolic acid is used as early antiseptic (used with caution). Mercurochrome is used on cuts and wounds as an antiseptic.
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Related Questions
Which of the following is not a germ-killing secretion?
- Blood
- Saliva
- Tears
- Sweat
Antibody is a blood serum protein produced in response to:
- Antitoxins
- Antibiotics
- Antigens
- Antiseptics
Assertion (A): Immunity is the resistance to the onset of a disease after infection by harmful germs.
Reason (R): A body's immunity is maintained by two proteinaceous substances — antigens and antiseptics.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Assertion (A): Antigens are produced by a type of specialised lymphocytes on exposure to antibodies.
Reason (R): Antibodies recognise a particular antigen and binds to it rendering it harmless. Thus antibodies protect us from disease-causing germs.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.