Dom RAC Prelim

A. Dr. John Gorrie developed a machine to provide ice and air conditioning for his hospital. 

B. Preservation of vaccine is one of the most important uses of refrigeration.

• First statement is true while the second statement is false

• Both statement are true

• Second statement is false while the second statement is true

• Both statement are false

   Preservation of _________ is one of the most important uses of refrigeration.

A..  The first man-made refrigeration is produced by the evaporation of ethyl ether into a partial vacuum and it is credited to William Cullen

B.   During the 1850’s Ferdinand Carre in France developed a second type of refrigeration machine.

• First statement is true while the second statement is false

• Both statement are true

• Second statement is false while the second statement is true

• Both statement are false

A.  Dr. John Gorrie was granted a patent in 1844 on a closed-cycle air refrigerating machine by means of which ice was made.

B.      Alexander Twinning an American, produced the first commercial ice by means of a vapor-compression machine in the year 1850.

• First statement is true while the second statement is false

• Both statement are true

• Second statement is false while the second statement is true

• Both statement are false

1.     Dr. John Gorrie was granted a patent in ___________ on a closed-cycle air refrigerating machine by means of which ice was made.

   Alexander Twinning an American, produced the first commercial ice by means of a vapor-compression machine in the year _______.

A. The multiplication of microbes had been recognized as the major cause of food spoilage.

B.   Ferdinand Carre introduced ammonia as the refrigerant with ammonia-water as an absorbent in 1850.

• First statement is true while the second statement is false

• Both statement are true

• Second statement is false while the second statement is true

• Both statement are false

  Ferdinand Carre introduced ammonia as the refrigerant with ammonia-water as an absorbent in ________.

A.    After World War I discovered the halogenated hydrocarbons such as Freon #11, Freon #12, and Freon # 22 which proved to be safer and superior to ammonia as the refrigerant.

B.    Studied shows that food have microbes that multiply slower in warm places.

• First statement is true while the second statement is false

• Both statement are true

• Second statement is false while the second statement is true

• Both statement are false

Studied shows that food have microbes that multiply __________ in warm places.