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Biology · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 3 · Q19
(a) Mention any two ways by which HIV and Hepatitis-B can be transmitted to a healthy person. (b) Why is an early detection of these diseases…
(a)
Mention any two ways by which HIV and Hepatitis-B can be transmitted to a healthy person.
(b)
Why is an early detection of these diseases essential?
Marking-scheme solution
(a)
Sharing of injection needles or surgical instruments etc. with an infected person, Transfusion of blood contaminated with HIV/Hepatitis B virus, An infected mother to the foetus through placenta
(b)
For proper treatment and to prevent spread of the disease.
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CBSE Class 12 Biology past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.