PYQ Part 2 General GK
Автор: Gyanshot e-channel FOR GOVT. Exams
Загружено: 2026-01-20
Просмотров: 12
Описание:
Food cans are coated with Tin (Sn) and not Zinc (Zn) — but why? 🤔
This is a frequently asked General Science question in exams like ACF, Patwari, SSC, UPSC Prelims, and other competitive exams.
🔹 Key Concept Explained Simply:
Zinc is more reactive than Tin
Many food items (like tomato, fruits, pickles) contain acids (citric acid, acetic acid, etc.)
If cans were coated with Zinc, it would react with these acids and form toxic zinc salts, making food unsafe ❌
Tin is less reactive, so it does not react with acidic food and keeps food safe ✔️
🔹 Correct Answer:
👉 (C) Zinc is more reactive than tin
🔹 Exam Relevance:
Static GK
Chemistry (Metals & Reactivity Series)
Repeated PYQ concept
📘 Hindi + English Explanation included
Perfect for last-minute revision and concept clarity.
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