Salts - Properties

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  • Q1

    Caustic potash is a

    Marks:1
    Answer:

    deliquescent salt.

    Explanation:

    The salts that absorb moisture from the air and form a saturated solution are known as deliquescent salts.

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  • Q2

    Effloresence is maximum when temperature is

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    Answer:

    high and the atmosphere is dry.

    Explanation:

    The salt that loses its water of crystallisation partially or completely when exposed to air is known as an efflorescent salt and the property is called  efflorescence. Efflorescence is maximum when temperature is high and the atmosphere is dry.   

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  • Q3

    A salt having water of crystallisation is

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    Answer:

    Washing soda.

    Explanation:

    The fixed number of water molecules that remain in the crystals of crystalline salts is known as water of crystallisation. Washing soda is sodium carbonate decahydrate (Na2CO3.10H2O).

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  • Q4

    An example of normal salt is

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    Answer:

    Sodium sulphate.

    Explanation:

    A normal salt is formed by complete replacement of ionisable hydrogen atoms of an acid by metallic or ammonium ions.

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  • Q5

    A salt

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    Answer:

    is an ionic compound.

    Explanation:

    A salt is an ionic compound which is formed by the neutralisation of an acid and a base. It dissociates into ions when dissolved in water.

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