Question
It is advised to add gypsum to manure in the cattle
shed. Reason behind it is?Solution
Gypsum (calcium sulfate) is added to manure primarily as a preventative measure against nitrogen loss. It reacts with ammonium carbonate, an intermediate formed during urine decomposition, to create ammonium sulfate, which holds nitrogen in a stable form, preventing it from volatilizing as ammonia and being lost to the atmosphere.Â
The frequency of ultrasonic waves is:
Sounds of frequencies less than about ______ vibrations per second cannot be detected by the human ear.
A sound with a single frequency is called a:
What type of lens is used to correct myopia (nearsightedness)?
Which of the following is NOT a vector quantity? Â
A cylindrical wire of non-uniform cross-section has its radius increasing linearly from R to 3R over its length L. If a constant current I flows through...
Newton’s second law of motion primarily explains which of the following?
The time period of a simple pendulum depends on — Â
If a force of 20 N is applied to push a 4 kg object, what is the acceleration produced? Â
What is the unit of the refractive index?
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