| Column I | Column II |
| (i) H | (a) Used in the name of perhydrol |
| (ii) \[{{H}_{2}}\] | (b) Can be reduced to dihydrogen by \[NaH\] |
| (iii) \[{{H}_{2}}O\] | (c) Can be used in hydroformy- lation of olefin |
| (iv) \[{{H}_{2}}{{O}_{2}}\] | (d) Can be used in cutting and welding |
Answer:
Atomic hydrogen when converted
into dihydrogen, a huge amount of heat energy is released which is used for
cutting and welding.
(i - d)
\[{{H}_{2}}O\]can be reduced to
dihydrogen by\[NaH\].
\[NaH+{{H}_{2}}O\to
NaOH+{{H}_{2}}\]
(iii - b)
\[{{H}_{2}}{{O}_{2}}\]is used in
the name of perhydrol.
(iv-a)
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