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Hot conc. acts as strong oxidising agent which of the following element is oxidised by conc. into two gaseous products ?
(a)
(b)
(c)
(d)

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Important Questions on The p-Block Elements
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Reason Hydrogen peroxide reduces to

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Identify the correct statements from the following.
i) Quartz is a piezoelectric material
ii) All group tetrachlorides except are easily hydrolyzed in water.
iii) The bond distance within the layer of graphite is .
iv) is soluble in aqueous solution.

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Given below are two statements:
Statement Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.
Statement Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.
In the light of the above statements, choose the most appropriate answer from the options given below.

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Among the following, the number of halide(s) which is/ are inert to hydrolysis is
(A)
(B)
(C)
(D)

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