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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
- 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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- An element M forms an oxide M2O3. Which is acidic in nature. State whe...
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- A solution of CuSO4 was kept in an iron pot. After a few days the iron...
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- Define calcination and roasting.
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- What would happen to iron railings on the roadside if they are not pai...
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- Explain the following: Carbon cannot reduce the oxides of Na and Mg.
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- Explain the following: Reactivity of Al decreases if it is dipped in H...
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- Explain the following: Titanium is a strategic metal.
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- A,B and C are three elements which undergo chemical changes according ...
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- A,B and C are three elements which undergo chemical changes according ...
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- Consider the following reactions : (i) A + B SO4 rarr a SO4 +B (ii...
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- With the help of diagram show the transfer of electrons between the at...
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- Why are ionic compounds usually hard?
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