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Widal test is used for the diagnosis of

1. Malaria
2. Pneumonia
3. Tuberculosis
4. Typhoid

Correct answer: Typhoid

Solution

The Widal test is a serological agglutination test used to detect antibodies against Salmonella typhi and related antigens. Because Salmonella typhi causes typhoid fever, the test is used in its diagnosis.

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