Which metallic element has the property of catching fire if dropped in hot water?
A. Sulfur
B. Hydrogen
C. Sodium
D. Iron
Answer
Correct Answer: C. Sodium
Detailed About MCQs
Sodium in the water catches fire due to the formation of hydrogen gas and the evolution of heat. The reaction of Sodium with water is highly exothermic. During the reaction, the sodium metal may well become so hot that it catches fire and burns with a characteristic orange color. The resulting solution is basic.