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Food cans are coated with tin and not with zinc because (a) zinc is costlier than tin.
(c) Food cans are coated with tin and not with zinc because zinc is more reactive than tin.
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Give the definition of a cation and an anion.
Cation- It is the positively charged ion, e.g., Na+ which is attracted towards cathode (negative electrode) in an electric field. Anion – It is the negatively charged ion, e.g., Cl- which...
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Which of the following can be beaten into thin sheets? a. Zinc b. Phosphorus c. Sulphur d. Oxygen
Zinc can be beaten into thin sheets.
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What is the co-ordination number of cation and anion in Caesium chloride (bcc arrangement) ?
your the answer 8 and 8.
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Out of zinc and tin, which one protects iron better even after cracks and why ?
Zinc protects better because oxidation of zinc is greater but that of tin is less than that of iron.
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Explain how vacancies are introduced in an ionic solid when a cation of higher valence is added as an impurity in it.
When a cation of higher valence is added to an ionic solid as an impurity to it, the cation of higher valence replaces more than one cation of lower valence...
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Can you store copper sulphate solutions in a zinc pot?
Zinc is more reactive than copper. Therefore, zinc can displace copper from its salt solution. If copper sulphate solution is stored in a zinc pot, then zinc will displace copper...
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A sample of galena is contaminated with zinc blende.Name one
The correct answer " NaCN '
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Zinc is used but not copper for the recovery for metallic silver from the complex [Ag(CN)2]-,
[Hint : Zinc reacts at faster rate as compared with copper, further zinc is cheaper than copper.]
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Give equations for the industrial extraction of zinc from calamine.
ZnCO3 => ZnO + CO2 (Calcination) ZnO + C => Zn + CO (Reduction)
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