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q show the hydrides of boron and aluminiumboron forms a series of volatile hydrides which resemble in some respects eg volatility and covalent
what is yellow feveryellow fever is a viral infection that happens mainly in central africa and in the amazon region of south america it is prevented
what is denguedengue or dengue fever is an epidemic disease in some countries for instance in brazil and its most dangerous form is hemorrhagic
q show the chemical properties of aluminiumaluminium has a very high affinity for oxygen this is reflected in high exothermic heat of formation of
q show the chemical properties of group 13elements of group 13 are comparatively less reactive than the alkali and alkaline earth metals of groups 1
elements of group 13 are less metallic than those of groups 1 and 2 within the group there is a variation in metallic character boron the smallest
q general characteristics of elements of group 13all the elements of group 13 have similar valence shell electronic configuration of ns2np1 but the
why is rubella during gestation a threat to the fetusif occurring during gestation rubella is a dangerous disease due to the virus crosses the
what is the virus that causes flu why doesnt the body create permanent immunity against that virus how does the vaccine against flu work flu is a
what are some human diseases caused by virus and what are their respective modes of transmissionthe main viral diseases transmitted by respiratory
q important applications of indiumthe most important applications of indium are in protection of bearings against wear and erosion in low melting
q what is the use of galliumgallium is mainly used in semiconductor technology it is used for doping other semiconductor and in solid state devices
q illustrate important catalyst of aluminiumanhydrous alcl3 is an important catalyst used in organic synthesis and in the cracking of petroleum
q uses of aluminiumaluminium exhibits useful properties of low density high thermal and electrical conductivity and good corrosion resistance with
q why we use boronboron is used to increase the hardness of steels crystalline boron is used in transistors boron is a good neutron absorber and is
q how can we obtain pure aluminapure alumina is obtained from bauxite ore powdered bauxite mineral is heated in a concentrated solution of sodium
q extraction of aluminiumaluminium cannot be extirpated economically from the silicate minerals therefore bauxite is the most important ore for the
what are some fungal diseases transmitted by animal fecesbat and pigeon feces can carry histoplasma capsulatum the fungus agent of histoplasmosis the
q how can we obtain boronboron is- obtained by the red-action of b2o3 with magnesium or sodium b203 is first prepared by strongly katingh3b03 which
q occurrence of group 13 elementboth boron and aluminium have a high affinity for oxygen so neither of them is found native boron occurs principally
elements of group 13 are namely boron aluminium gallium indium and thallium while studying the alkali and alkaline earth metals you have seen that
what is the parasite that causes toxoplasmosis how is the disease transmitted and what are its typical manifestationstoxoplasmosis is caused by the
what is the etiological agent of visceral leishmaniasis how is the disease transmitted and what are its typical manifestationsvisceral leishmaniasis
what is the etiological agent of cutaneous leishmaniasis how is the disease transmitted and what are its typical manifestationsthe etiological agent
what are the main manifestations of leishmaniasisthere are two major forms of leishmaniasis cutaneous leishmaniasis and visceral leishmaniasis also