The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?
Correct answer: A. straight
- A. straight
- B. compound
- C. both a and b
- D. none of the above
Explanation
A straight fertilizer supplies mainly one primary plant nutrient, such as nitrogen, phosphorus or potassium. A compound or mixed fertilizer supplies two or more nutrients in a specified combination. The likely alternative is compound fertilizer, but that does not match the phrase single nutrient.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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