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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
- Although metals from basic oxides, which of the following metals form ...
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- Which of the following non-metals is a liquid?
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- Consider the following displacement reactions: A+BSO4rarrASO4+B C+ASO4...
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- Which of the following reactions cannot occurs?
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- Chemical formula of cryolite is
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- Which of the following is the sulphide ore of copper?
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- True/false Gold dissolves in aqua regia.
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- T/F Rust is Fe2O3. xH2O
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- Sulphide ores are concentrated by froth floatation process.
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- True/false the alloy invar contains iron and aluminium.
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- Can copper displace iron from iron sulphate solution? Give reasons.
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- The rockey material found with ores is known as…………….
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- Fill ups Most oxides of metal are………………in nature.
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- Fill ups the percentage of gold in 22 carat gold is………….. .
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- Fill ups In galvanisation iron is protected by the coating of………….. .
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- In the electrorefining of copper,some gold is deposited as:
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- Why ae metals called electropositive elements and non-metals called el...
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- Which of the two metals copper and silver is more reactive?
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- Name two metals which react with dilute nitric acid to produce hydroge...
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- Give one example of each of metal that is good conductor of electricit...
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