Home › NDA › Chemistry › Chemical Reactions and Equations › Galvanisation, the coating of iron with a thin l…
Galvanisation, the coating of iron with a thin layer of another metal to prevent rusting, uses:
ATin
BMagnesium
CAluminium
DZinc
Answer & Solution
Correct answer: D. Zinc
1. Iron is COATED with ZINC to prevent corrosion.
2. Zinc is more reactive than iron; it corrodes preferentially (sacrificial protection).
3. Even if the zinc layer is scratched, zinc nearby continues to protect the iron.
_Source: NCERT Class 10 Science Ch 1 §1.4 Corrosion and its Prevention_
Related questions
Clear limewater turns milky white when a gas is bubbled through it. Which gas was in the bMilk left standing for a few days tastes sour. Which process has produced that taste?During a chemical reaction, what happens to the atoms of the reactants?What do we call the substances that are present before a reaction takes place?What happens to the starting substances during a chemical reaction?A reducing agent in a redox reaction is the substance thatRespiration, in which glucose combines with oxygen to release energy, is best described asThe decomposition of water into hydrogen and oxygen on passing electric current is called