Which mineral mostly forms through chemical precipitation? a) salt b) silicon c) aluminum d) clay

Option 'A' is correct.

Explanation:

Chemical precipitation means obtain a solid substance from a solution which is separable.

It can be done in two ways :

1) by converting substance into insoluble form.

2) by changing the composition of solvent to reduce the solubility.

Salt is formed by chemical precipitation.

When two solutions which contains salt are combined together, then precipitation occurs due to which insoluble salt is formed.

Hence, option 'A' is correct.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.