A) \[{{H}_{2}}O\]
B) Nitrogen
C) \[C{{O}_{2}}\]
D) Asbestose blanket
Correct Answer: D
Solution :
Lithium, sodium and potassium are highly electropositive and highly reactive metals. When any of these come in contact with water, the reaction is so swift and intense that the hydrogen evolved catches fire instantaneously. The reaction thus is doubly exothermic, using water to quenched fires caused by these metals makes it explosively dangerous. Likewise \[C{{O}_{2}}\]and nitrogen too are reactive. Small fires can be quenched by asbestos blanket or by covering with dry sand, since these measures prevents contact with oxygen and water vapour and thus become effective.
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