The Fundamental Unit of Life - Class 9 Science CBSE ICSE
Given below are four operations for preparing a temporary mount of human cheek cells.
(i) Take a scraping from the inner side of cheek and spread it on a clean slide.
(ii) Put a drop of glycerine on the material.
(iii) Add 2-3 drops of methylene blue.
(iv) Rinse the mouth with fresh water and disinfectant solution.
What is the correct sequence of this operation?