The most common source of HIV infection is:
1. Blood transfusion
2. Intravenous drug addiction
3. Homosexual contact
4. Heterosexual promiscuity

A drug, sometimes used to overcome the problem of alcoholism, is:
1. Flumazenil
2. Disulfiram
3. Desferroxime
4. Aspirin

The “Window Period” is especially important in the epidemiology of HIV infection as:
1. the individual is normally asymptomatic during this stage
2. the load of virus in the body is the heaviest
3. this is the only infective stage for HIV transmission
4. HIV transmission is easiest during this stage

Consider the given two statements:

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.

Aside from the irritant fibre of ..................., all carcinogens are thought to be ....................... .
1. arsenic, mutagenic
2. asbestos, virulent
3. asbestos, mutagenic
4. arsenic, virulent

Dermataphytosis [ringworm] of finger nails, toe nails and nail bed is called as:
1. Tinea pedis
2. Tinea unguium
3. Tinea corporis
4. Tinea cruris

Some common diseases that are generally considered autoimmune include all the following except:
1. Celiac disease
2. Psoriasis
3. Systemic lupus erythematosus
4. Type II diabetes mellitus

Which of the following is not a characteristic of a cancerous cell?

Consider the given two statements: 

1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.

Myeloma is a cancer of:
1. T lymphocytes
2. Dendritic cells
3. Plasma cells
4. Bone marrow stem cells