Bihar Police · General Science
Metals & Non-metals
Reactivity series, alloys and corrosion.
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Take a full mock →Q1 · Metals & Non-metals · EASY
Which metal is placed at the top of the reactivity series?
Q2 · Metals & Non-metals · EASY
Brass is an alloy primarily made of which two metals?
Q3 · Metals & Non-metals · MEDIUM
A metal 'X' does not react with cold water but reacts with steam to form its oxide. Metal 'X' is placed below sodium but above iron in the reactivity series. Which of the following is metal 'X'?
Q4 · Metals & Non-metals · HARD
Iron articles are often coated with zinc to prevent rusting. This process is called galvanization. Why does zinc coating protect iron from corrosion even when the coating is broken at some places?
Q5 · Metals & Non-metals · EASY
Which of the following metals is stored in kerosene to prevent reaction with air and moisture?