This quiz works best with JavaScript enabled. Home > Insect Pests > Management > Insect Pests And Their Management – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Insect Pests And Their Management Quiz 6 (2 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the 100% effective way to prevent backflow in plumbing? A) Create an air curtain. B) Create a cross connector. C) Create an air gap. D) Install a vacuum breaker. Show Answer Correct Answer: C) Create an air gap. 2. For every dollar spent on pesticides an estimated ..... dollars is made from increased crop yields. A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: C) 4. ← PreviousRelated QuizzesInsect Pests QuizzesInsect Pests And Their Management Quiz 1Insect Pests And Their Management Quiz 2Insect Pests And Their Management Quiz 3Insect Pests And Their Management Quiz 4Insect Pests And Their Management Quiz 5Insect Pests Of Fruits Plantation Medicinal Aromatic Crops Vegetable Ornamental And Spice Crops Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books