Advertisements
Advertisements
प्रश्न
The reaction of calcium with cold water is ______.
विकल्प
Less violent, but the heat evolved is sufficient for the hydrogen to catch fire.
Very violent and exothermic and hydrogen catches fire.
Exothermic, but the heat evolved is not sufficient for the hydrogen to catch fire.
Slow and endothermic.
MCQ
रिक्त स्थान भरें
Advertisements
उत्तर
Exothermic, but the heat evolved is not sufficient for the hydrogen to catch fire.
Explanation:
Calcium reacts with cold water to form calcium hydroxide and hydrogen gas. While the reaction is exothermic and releases heat, the amount produced is significantly less than that of alkali metals like sodium or potassium, making it insufficient to ignite the liberated hydrogen.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
