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प्रश्न
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
State one appropriate observation when a small piece of zinc is added to dilute hydrochloric acid.
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उत्तर
Hydrogen gas is evolved with brisk effervescence. The gas burns with a ‘pop’ sound when tested with a burning splint.
\[\ce{Zn + 2HCl -> ZnCl2 + H2 ^}\]
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