Why does sodium hydride conduct current when melted? from Chem
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    The s-Block Elements

    Multiple Choice QuestionsShort Answer Type

    31.

    What is brine?

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    32.

    Why does table salt get wet in rainy season?

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    33.

    What is the difference between soda ash and washing soda?

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    34.

    Give the formula of:
    (i) baking soda  (ii) salt cake?

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    35.

    How will you distinguish between sodium carbonate and sodium bicarbonate?

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    36.

    What is fusion mixture?

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    37.

    What is black ash?

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    38.

    Which alkali metal and which alkaline earth metal is radioactive? Give their atomic number also?

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    39.

    Why does sodium hydride conduct current when melted?

    Sodium hydride is an ionic compound (Na+H–). The ionic mobility is negligible in the solid state but when melted, the ions do move. Thus, able to conduct electricity.
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    40. Why does sodium hydride act as a reducing agent?
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