Deafness may be caused by each of the following, e

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Deafness may be caused by each of the following, except:

A. rubella B. mumps C. herpes zoster D. all of these

Correct Answer: D

Rationale: All listed infections "rubella, mumps, herpes zoster, syphilis "can cause deafness.

Sydenham's chorea:

A. predominantly in males B. purposeless movements that increase during sleep C. hereditary (sex-linked) D. none of these

Correct Answer: D

Rationale: Sydenham's chorea (post-streptococcal) affects children, mostly females, with movements ceasing in sleep.

Streptomycin can cause:

A. 4th cranial nerve damage B. 8th cranial nerve damage C. 10th cranial nerve damage D. 6th cranial nerve damage

Correct Answer: B

Rationale: Streptomycin damages the 8th cranial nerve, causing hearing loss or vestibular dysfunction.

Of the following places of work, cases of byssinosis are most likely to be found in:

A. mines B. cotton mills C. foundries D. wood-working shops

Correct Answer: B

Rationale: Byssinosis (cotton dust lung disease) occurs in cotton mill workers.

Asbestosis gives a destructive x-ray picture, best described as:

A. cotton ball infiltrate B. ground glass pulmonary fibrosis C. patchy pneumonitis D. perihilar adenopathy

Correct Answer: B

Rationale: Asbestosis shows ground-glass fibrosis on X-ray from interstitial lung disease.

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