The fertility of the soil is improved by________________?
Correct answer: D. All
- A. Rotation of the crops
- B. Adding lime to the acid salts
- C. Adding manure and growing legumes
- D. All
Explanation
Crop rotation prevents continuous depletion of the same nutrients, lime neutralizes acidic soil, and manure adds organic matter and nutrients. Leguminous plants also improve nitrogen content through nitrogen-fixing bacteria in their root nodules. Therefore all the listed practices can improve soil fertility, while choosing only manure overlooks the other mechanisms.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Industrial Chemistry
292 free Industrial Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Polymers questions
The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?
The cooling of molten urea by air in the tower is called______________________?
Calcarious material includes_________________?
Nylon is obtained by heating___________________?
Polyester resins are the product of the reaction of__________________?
A polymer in which three different monomers combine called_____________?