Lab 2 Technology 2

In the rule q= U A (T1-T2), U stands for ...............

• Rate of Heat Transfer

• Overall Heat Transfer Coefficient

• Area

• Temperature Difference

All of the following are types of evaporation equipments except ....

• Natural Circulation Evaporators

• Synthetic Circulation Evaporators

• Forced Circulation Evaporators

• Film Evaporators

All of the following are disadvantages of the Evaporating Pan except ...............

• Having only natural circulation

• Give rise to foam when boiled

• Used for evaporation of aqueous liquids only

• 1. Simple and cheap to construct

Since many pharmaceutical materials are thermolabile or dissolved in organic solvents, such as alcohol, the evaporating pan is extensive in application

• True

• False

Evaporating still can be used for thermolabile materials

• Yes

• No

Which of the following is not a disadvantage of evaporating still

• Natural Convection only

• All the liquor is heated all the time

• Heating surface is limited

• Simple to construct

....................... Evaporator requires low head room and is easy to install

In the short vertical tube evaporator, the use of a tubular ......................... increases the heating area largely

.................................. is the device where the heating source of an effect is the vapor originating from the preceding evaporation effect

• Evaporating pan

• Horizontal tube evaporator

• Short vertical tube evaporator

• Multiple effect evaporator

Multiple effect evaporator with ................. feed is used for already hot feed

• Forward

• Backward