7.
Which of the following are disadvantages of the solution?
a. It usually requires an expensive solvent.
b. It is usually flammable.
d. It has little effect as a contact spray or residual spray.
e. It is easily absorbed through the skin.
8.
An emulsion consists of:
a. An emulsifying agent and water.
b. Technical grade pesticide and an emulsifying agent.
c. An emulsifiable concentrate and a petroleum solvent.
d. An emulsifiable concentrate and water.
9.
Which of the following are advantages of the emulsion?
a. It uses an inexpensive diluent.
b. It need not be constantly agitated.
c. It is not readily absorbed through the skin.
d. It has both contact and residual effect.
e. It is nontoxic to plants.
10.
Is the following statement true or false? "It is better to mix pesticides too weak
than too strong in order to prevent a hazard to human lives and other nontarget
organisms."
a. True.
b. False.
MD0173
2-19