Home » General Knowledge » General Science

Materials/coatings: Galvanised iron sheets — identify the metal used for the protective coating. Focus on the standard anti-corrosion layer. Choose the correct metal.

Q: Materials/coatings: Galvanised iron sheets — identify the metal used for the protective coating. Focus on the standard anti-corrosion layer. Choose the correct metal.

Given data Product: Galvanised iron (GI) sheets. Concept/Approach Galvanizing means coating iron/steel with zinc, which provides sacrificial protection (zinc corrodes preferentially), thereby preventing rusting of the base metal. Final Answer Zinc

Difficulty: Easy

Zinc
Tin
Aluminium
Chromium

Correct Answer: Zinc

Explanation:

Given data

Product: Galvanised iron (GI) sheets.

Concept/Approach
Galvanizing means coating iron/steel with zinc, which provides sacrificial protection (zinc corrodes preferentially), thereby preventing rusting of the base metal.

Final Answer
Zinc

Next Question→

More Questions from General Science

Basic chemistry (common names): What is the chemical compound popularly known as washing soda? Identify the correct inorganic salt corresponding to the household name. Choose the correct compound.
Basic chemistry (common gases): Marsh gas is chemically identified as which simple hydrocarbon? Identify the gas produced in anaerobic swamps and biogas plants. Choose the correct gas.
Pyrotechnics (colors of flames): In fireworks, which element's compounds produce a bright green flame? Focus on standard color-producing metal salts used in pyrotechnic compositions. Choose the correct element.
Acid fundamentals (core element): Which chemical element is common to all acids? Think of the ion released by acids in aqueous solution per Arrhenius/Brønsted concepts. Choose the correct element.
Oceans & salinity: What is the average salinity of sea water? Express the typical open-ocean salinity value used in oceanography. Choose the correct value.
Basic chemistry (common names): What is laughing gas? Identify the correct oxide of nitrogen known by this common name. Choose the correct compound.
States of matter (non-metals): Which non-metal remains liquid at room temperature? Identify the correct element among common p-block non-metals. Choose the correct option.
Chemicals & uses: Potassium nitrate (KNO3) is commonly used in which of the following? Think of its role as an oxidizer in classical compositions. Choose the correct application.
Electronics (semiconductors): Which two elements are most commonly used to manufacture transistors? Identify the classic group-14 semiconductor pair. Choose the correct pair.
Metallurgy (aluminum source): What is the most important ore of aluminum? Identify the principal bauxite-group ore used industrially for alumina extraction. Choose the correct ore.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion