2013
(a) State one appropriate observation when : Conc. H.SO.
is added to a crystal of hydrated copper sulphate.
(b) In the given equation - S + 2H2SO4 3502 + 2H20 :
Identify the role played by conc. H2SO4
(i) Non-volatile acid
(ii) Oxidising agent
(iii) Dehydrating agent (iv) None of the above
(c) Give a balanced equation for : Dehydration of
concentrated sulphuric acid with sugar crystals.
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The layer of soil which is just below the top-soil is called B-horizon. It is also known as sub-soil. The sub-soil is made up of slightly bigger rock particles than that of top-soil. ... The sub-soil has very little humus (decayed organic matter).
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