Which of the following increases as boiling water changes to steam?

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An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

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What is the shape of a molecule of CCI4?

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A radioactive solid is best stored

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Which of the following non-metals reacts most readily with metals?

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Electrostatic force of attraction between sodium ion and halide ion is greatest in

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Which of the following contains co-ordinate covalent bond?

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The type of chemical bond that exists between potassium and oxygen in potassium oxide is

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Electrovalent compounds are characterized by

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An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

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Chlorine atom forms CI by

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The atoms of four elements are represented as 20Q, 16R, 10S and 8T Which of the elements would be unreactive?

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