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प्रश्न
Dil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.
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उत्तर
Response with any of the given two arguments.
- Bubbles of gas/Evolution of gas.
- Change in colour (Zn - silvery grey to black).
- Change in temperature.
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संबंधित प्रश्न
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\[\ce{Al2(SO4)3 + NaOH -> Al(OH)3 + Na2SO4}\]
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\[\ce{CO + O2 -> CO2}\]
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\[\ce{KNO3 -> KNO2 + O2}\]
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