Which is a better conductor of electricity, metal or water? A B There is no difference.
Which is better to use to put out a fire? A B There is no difference.
The Correct Answer and Explanation is:
Question 1:
Which is a better conductor of electricity, metal or water?
Correct Answer: A. Metal
Explanation:
Metals are significantly better conductors of electricity than water. This is due to their atomic structure. In metals, such as copper, aluminum, and silver, the outer electrons of atoms are loosely bound and can move freely. These free-moving electrons are what allow electrical current to pass through metals easily. This high conductivity makes metals ideal for wiring and electrical components.
Water, on the other hand, is a poor conductor of electricity unless it contains dissolved ions. Pure water (distilled water) actually does not conduct electricity well because it lacks free ions to carry the current. However, when salts, minerals, or other impurities are dissolved in water, they release ions (such as sodium, calcium, or chloride ions), which allow electricity to flow. Even then, water with ions is still less conductive than most metals.
This is why in homes and industries, metals like copper and aluminum are used for electrical wiring, not water or any liquid medium.
Question 2:
Which is better to use to put out a fire?
Correct Answer: A (typically a fire extinguisher or a method suited to the type of fire)
Explanation:
The best method to put out a fire depends on the type of fire. However, water is not always the best or safest choice. Water is effective for Class A fires (those involving wood, paper, or cloth), because it cools the material below its ignition point. But for other types of fires, water can be dangerous:
- Electrical fires (Class C): Water conducts electricity and can lead to electric shock.
- Grease or oil fires (Class B): Water can cause flaming oil to splatter, spreading the fire.
A Class ABC fire extinguisher is generally safer and more effective across multiple types of fires. It uses dry chemicals that can smother flames without conducting electricity or causing splatter.
In summary, metal is a better conductor, and the better method to put out a fire depends on the fire type—but a proper fire extinguisher is safest in most case
