Jung e Neherwaan aur Khawaarij ka Khaatimah || By Hafiz Javeed Usman Rab...

Comments

Post a Comment

Popular posts from this blog

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. ...
Read more

Biology Serve Mankind

Biology serve mankind in very fields. As follows 1) In the Field of  Health               Biology serves mankind in the field of health as follows. a. It has helped the men in combating fatal diseases like malaria, smallpox, tuberculosis etc. b. It has provided a cure for some diseases like cancer through radiotherapy and chemotherapy. c. We have been able to bring epidemics under control. d. We have reduced infants mortality rates etc. e. The science of biology serves mankind in coming to our rescue by finding means to increase food production and by controlling the increase in human population. God gives knowledge to biologists,,, that's why they serve humanity 2) In the Field of Agriculture: a. Biology serves mankind in agriculture by hydroponics possible whereby plants can be grown in solution or moist material containing minerals, instead of growing in soil. b. Biology has provided biological control for certain pest of food crops. c. Recentl...
Read more

Size and Mass of an atom

Here we discuss the size and mass of an atom. Size of atom: First, we discuss the size of an atom. It has been observed by the x-ray work in the 20th century,  that size of atoms is so small that it can be imagined by the following calculations. a) The diameter of the atom is of the is of the order 2 multiply 10 over raised power -10 m . in nanometers 0.2 nanometer. b) A man breathes approximately 10 power raised to 5 million atoms in a deep breath. c) If atoms are joined together in a line, two million atoms will be required to cover a full stop.    
Read more