Question

1. Surfactants make excellent adjuvant for improving spray quality because they disrupt what kind of bonding in water?
   1. Covalent bonds
   2. Ionic bonds
   3. Electrostatic bonds
   4. Hydrogen bonds
   5. Hydrophobic bonds
2. A water dispersible granule pesticide formulation is disproportionately composed of which substance?
   1. Wetting agent
   2. Dispersant
   3. Binder
   4. Active ingredient
   5. Water
3. Surfactants effectively lower surface tension of water until the water turns turbid, indicating that the ______    ______ concentration has been reached.
4. The legal basis for EPA establishment of pesticide tolerances is codified under which specific Act mandated by Congress.
   1. FIFRA
   2. FEPCA
   3. FFDCA
   4. PIPS
   5. ESA
   6. CWA
   7. SDWA
   8. FQPA

Answer 1

1.a.Hydrogen bonds

Nonionic surfactants are comprised of linear or nonyl-phenol alcohols and/or fatty acids. This class of surfactant reduces surface tension . Surface tension of water made up of hydrogen bonds between water molecules which disrupted by surfactant.

2.e. water

water-dis-persible granules are mixed with water and applied as a spray suspension. Once in water, the granules break apart into fine powder. The formulation requires constant agitation to keep it suspended
in water.

3. critical micelle concentration.

4. a. FIFRA

Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) .Congress had given major revisions to FIFRA in 1972 with the Federal Environmental Pesticide Control Act (FEPCA).It is administered and regulated by the United States Environmental Protection Agency (EPA) .