The term ‘secular trend’ implies:

 # The term ‘secular trend’ implies:

A. Being liberal minded in diagnosing

B. Cold professional attitude

C. Changes in occurrence over a long period of time

D. Migration from rural areas

The correct answer is C. Changes in occurrence over a long period of time.

Long term or secular trends refers to changes in disease frequency that occurs gradually over long periods of time. Oral cancer is an example of disease which has shown a consistent upward trend during the past years, whereas diseases like tuberculosis, typhoid, polio and diphtheria have shown a downward trend. 

CLICK HERE FOR MORE MCQs

Clinical wastes in hospitals are to be disposed of in which colored bags?

 # Clinical wastes in hospitals are to be disposed of in which colored bags?

A. Yellow

B. Black

C. Green

D. Red

The correct answer is A. Yellow.

Clinical wastes are disposed of in yellow bags and non clinical wastes are disposed of in black bags. Incinerators are used to burn all the combustibles at temperatures of 1300-1500 degree Centigrade. 

CLICK HERE FOR MORE MCQs

Temporary hardness of water is due to the presence of the following salts of calcium and magnesium:

 # Temporary hardness of water is due to the presence of the following salts of calcium and magnesium:

A. Bicarbonates

B. Sulphates

C. Chlorides

D. Nitrates

The correct answer is A. Bicarbonates.

Temporary hardness of water is due to calcium and magnesium bicarbonates while permanent hardness is due to calcium and magnesium sulphates, chlorides and nitrates. 

CLICK HERE FOR MORE MCQs

Waste water from kitchen is called:

 # Waste water from kitchen is called:

A. Sullage

B. Sewage

C. Garbage

D. Kitchen water

The correct answer is A. Sullage.

Garbage means discarded vegetable matter from the kitchen, canteens, etc.

Sullage refers to the fluid waste from a kitchen unmixed with excrements. 

Water sewage refers to waste water from household, industries, etc. containing human excreta. 

Refuse is all the solid and semisolid waste matters of a community EXCEPT excrements. 

 

CLICK HERE FOR MORE MCQs