Which of the following gases is not generated in a biogas plant?
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Which of the following is also known as Carbolic Acid?
Atoms of same element having different mass numbers are called__________
_______________ is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.
An unbalanced chemical equation is called a
Tooth decay starts when the pH of the mouth is lower than
Atomic number of which of the following elements is greater than that of Chlorine
In hydrolysis reactions compounds react with
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