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Which of the following donot react with ...

Which of the following donot react with cold as well as hot water:
Fe,Mg,Al,K,Ca

A

Na

B

Ca

C

Mg

D

Fe

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
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  2. In the reaction : Zn + FeSO4 rarr Zn SO4 + Fe

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  3. Which of the following donot react with cold as well as hot water: Fe,...

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  4. The ability of metals to be drawn into thin wire is known as

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  5. Generally, metals are solid in nature. Which one of the following meta...

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  6. Reaction between X and Y forms compound Z. X loses electron and Y gain...

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  7. Although metals from basic oxides, which of the following metals form ...

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  8. Which of the following non-metals is a liquid?

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  9. Consider the following displacement reactions: A+BSO4rarrASO4+B C+ASO4...

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  10. Which of the following reactions cannot occurs?

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  11. Chemical formula of cryolite is

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  12. Which of the following is the sulphide ore of copper?

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  13. True/false Gold dissolves in aqua regia.

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  14. T/F Rust is Fe2O3. xH2O

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  15. Sulphide ores are concentrated by froth floatation process.

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  16. True/false the alloy invar contains iron and aluminium.

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  17. Can copper displace iron from iron sulphate solution? Give reasons.

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  18. The rockey material found with ores is known as…………….

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  19. Fill ups Most oxides of metal are………………in nature.

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  20. Fill ups the percentage of gold in 22 carat gold is………….. .

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