HOW AIDS SPREADS?

 Aids spread by first unsafe sex, blood to blood, infected syringe and infected surgical instruments. Beware all these. and then step further.

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Different Methods of Filtration | Difficult Meanings

Fluted Filter Paper The rate of filtration through the conicalتکون نما funnel can be considerablyمناسب increased using a Fluted Filter Paper. For the preparation of such a paper ordinaryعام filter paper is folded in such a way that a fan like an arrangement with alternateمتبادل elevationsاتار and depressionsنیچا at various folds is obtained.حاصل شدہ Filtration Through Filter Crucibles Another convenientآسان way to filter a precipitateرسوب is by suctionکھینچنا through a crucible. Two types of crucibles are generally used. Gooch Crucible It is made of porcelainایک قسم کا میٹیریل having a perforatedمسام دار bottom which is covered with paper pulp or a filter paper cut to its size. Quick filtration can be done by placing the Gooch crucible in a suction filtering apparatus. It is useful for the filtration of precipitates, which need to be ignitedبھڑکانا at high temperature. If its perforations are covered with asbestos mat then it may be used to filter solutions that react with paper e.g. ...
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Filtration Through Filter Paper | Difficult Meaning

Filtration Through Filter Paper Filtration by a glass funnel قیف and filter paper is usually a slow process. As the mixture is pouredانڈیلنا onto the filter paper, the solvent (water) passes through leaving behind the suspendedمعلق particles on the filter paper. Filter papers are available in a variety of porositiesباریک مسام یا سوراخ ( pore sizes). Which pore مسام size is to be used, dependsانحصار upon the size of particles in the precipitate. The filter paper should be large enoughکافی so that it is one-fourth to one-half full of precipitate at the end of filtration. The funnel should, in turn, be large enough for its rim درمیان to extend    1to 2 cm above the top circumferenceدائروی of the paper.If the process of filtration is to run smoothly, the stem of the funnel should remain continuously full of liquid as long as there is liquid in the conical portion. The stem of the funnel should be several inches long so that it can extendکنارہ a few centimetres down into the receiv...
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What is Reading | Kinds of Reading

There are mainly six types of reading Loud Reading:  This type of reading also known as oral reading. A model reading is given by the expert,  with correct pronunciation, rhythm and punctuation. Silent Reading:   It is the most important type of reading. We all read faster than we speak. So silent reading is faster than loud reading. In usual we do not stop at punctuation marks. The movement of our eyes stops only in a difficult place. Intensive Reading:   Intensive reading is kind of reading in which full understanding of the text with its arguments its symbolic, emotional and social overtones. Intensive reading enables to speak correctly, use language without any fear and hesitation. This kind of reading increase vocabulary. This kind of reading understands and command over the language. Extensive Reading:   This kind of reading is called rapid reading or independent reading means read without any help. As in this type of reading a person read independent...
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