Identify the compound `X`

Identify the compounds X, Y and Z in the following reactions:

An organic compound C_(6)H_(12)(X) on reduction gives C_(6)H_(14)(Y) . X on ozonolysis gives two aldehydes C_(2)H_(4)O(I) and C_(4)H_(8)O(II) . Identify the compounds X, Y and aldehydes (I) and (II).

A compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity fo water. (a) Identify the compound X (b) Write the chemical equation for its preparation (c) For what purpose is it used in hospitals?

Identify the compounds X and Y in the following reactions : (a) Na_(2)B_(4)O_(7) + 2HCl + 5H_(2)O to 2NaCl + X (b) X overset(370k)toHBO_(2)overset(gt370)to Y.

Identify the compounds X and Y in the following reactions of Zn with HNO_3 Zn + conc. HNO_3 to Zn(NO_3)_2 + X + H_2O Zn+dil.HNO_3 to Zn (NO_3)_2 + Y + H_2O

An unknown inorganic compound (X) gave the following reactions: (i) The compound (X) on heating gave a residue, oxygen and oxide of nitrogen. An aqueous solution of compound (X) on addition to tap water gave a turbidity which did not dissolve in HO_(3+) (iii) The turbidity dissolved in NH_(4)OH . Identify the compound (X) and gives equation for the reaction (i),(ii) & (iii)