Question 1MCQ · Analyse · 1 mark
Metals and Non-metals · Reactivity series
Which pair should produce a displacement reaction in aqueous solution under ordinary school-lab conditions?
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CBSE Class 10 Science Competency Based Questions
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Question 2MCQ · Analyse · 1 mark
Metals and Non-metals · Ionic compounds
Solid sodium chloride does not conduct electricity, but molten sodium chloride does. What changes on melting?
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Question 3MCQ · Analyse · 1 mark
Metals and Non-metals · Corrosion prevention
A zinc-coated iron sheet is scratched. Why can nearby zinc still help protect the iron?
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Question 4MCQ · Analyse · 1 mark
Metals and Non-metals · Properties of metals and non-metals
Which combination makes copper suitable for a wire in an ordinary electric cable?
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