Fluorosis disease is caused due to the reaction of ...... with excess of fluoride in the body.

The $INCORRECT$ statement is:

Which of the following is the chemical formula for dolomite?

Ions of an element of group $1$ participate in the transmission of nerve signals and transport of sugars and amino acids into cells. This element imparts yellow colour to the flame in flame test and forms an oxide and a peroxide with oxygen. Identify the element and write chemical reaction to show the formation of its peroxide. Why does the element impart colour to the flame?

Alkali metals dissolve in liquid ammonia to give a blue-colored solution if it is dilute. This blue color is due to which of the following?

Explain the significance of sodium,potassium,magnesium,and calcium in biological fluids.