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It is the process of separating colloidal and suspended impurities from water by passing it through a porous bed made of fine sand and other proper sized granular materials. Filtration is carried out in a sand filter. It consists of a top thick layer of fine sand, placed over coarse sand layer followed by gravel. Water comes from the top.
Small micro-organisms present in sand voids decompose organic matter and remove some of the biological impurities.
Explain the Effect of Deficiency of Thiamin? Thiamin deficiency causes the disease beriberi in human beings, which has been classically considered to exist in dry (paralytic) a
How to culture mould plant s Use either sterile dishes with potato slices or gelatin as those ready for the experiments on bacteria. Transfer mould from every of the sources in
Phylum Sarcdina 1) They move by means of pseudopodia (ralse feet) or similar structures. 2) They feed heterotrophically by phagocytosis. Some examples: Amoeba, Entamo
who proposed trinomial nomenclature
State the concept of type locus interaction Some of the major contributions included the concept of type locus interaction, the analysis of quantitative as opposed to qualitati
What is meant by the expression 'infant mortality'? Infant mortality refers to the number of babies in a population who die at the age of 1 year or less. It is usually express
Q. What is meant by unsaturation or saturation of oils and fats? When it is said that a triglyceride is saturated it means that in its molecule the carbon chain is bound in its
Explain Tropical Rain Forests in biomes? You probably are well aware of the danger that the world's rain forests are facing in terms of extinction! There are huge numbers of sp
Explain Procedure for Spore Staining in a Given Bacterial Culture Carry out the exercise following the steps enumerated herewith 1. Take a clean, non-greasy slide. Prepare b
Advantages of vegetative propagation Vegetative propagation helps to maintain fixed qualities and characteristic features of the parent plant. For Example in ornamental p
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