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  Practical Notebook Biology Standard XII Observe the prepared slide of a blood smear to identify different types of blood cells Project Download in Pdf Chapter 14 Biology  Answeres Practical Notebook Standard XII Class-12th science Click here download in PDF 14. Observe the prepared slide of the blood smear to identify different types of blood cells.  Aim:- To identify and observe the types of blood artis in freshly prepared blood smear. Requirements:- Blood sample slides, Lentoon's stain, compound microscope. Procedure  A Hoxed or used to say or only the types of Mood cells but also the To be able to see the different types of cells in the poravites, if any, in the Mood of Pla Mood, the hood Mr bod in other words layer on the slide This spread of Mood on a slide is called Smear  To observe all the cells present in the blood sample under the microscope, they must be stained appropriately.  This process is called Staining Various staining like Leithmon's stain or Wright's s

  Practical Notebook Biology Standard XII Biology  Answeres Practical Notebook Standard XII Class-12th science Click here download in PDF 1. To detect the presence of starch added as an adulterant to the milk.   A Biter-proof starch added adulterants to the milk.  come animal source cow/buffalo), etc.  The pipettes,  1 iodine solution, milk samples (minimum 3, preferably will They Addition of much increases the SNF (Solid Not Fat) content of milk. Wheat flour, I flour can be added for increasing the SNF (Solid Not Fat) content.  Starch proper synthetic milk, which is, then added to natural milk. This is commonly used opposite for the added water. Since the starch powder is easily and cheaply available, it is the adulterant to milk, after water. Procedure Measure out 3ml milk into a  test tube/container.  2. Keep the test tube for incubation in a boiling water bath for 5 minutes.  3. After incubation, cool the test tube, add a few (2-3) drops of 1% iodine solution and mix the contents