• Once in a village, there was a fire in a hut. When a lot of dry powder of a substance, A was released over the fire,
the fire got extinguished.
(i) Name the substance A.
(ii) How does the substance extinguished fire?
(iii) Give another substance which behaves like substance A.
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Answer:
¹Fire extinguisher
² It contains carbon dioxide which is completely unnecessary for combustion.
³Dry ice.
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