1. [B] Basic Calcium phosphate Ca₃(PO₄)₂ is a basic salt, as it is formed by the combination of a weak acid (phosphoric acid) and slightly stronger base (calcium hydroxide).

    [B] Basic
    Calcium phosphate Ca₃(PO₄)₂ is a basic salt, as it is formed by the combination of a weak acid (phosphoric acid) and slightly stronger base (calcium hydroxide).

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  2. The number of vibrations produced by a vibrating body in one second is called frequency.

    The number of vibrations produced by a vibrating body in one second is called frequency.

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  3. The pressure exerted by atmospheric is known as atmospheric pressure.

    The pressure exerted by atmospheric is known as atmospheric pressure.

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