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Question
State giving reasons if zinc and aluminium can be distinguished by heating the metal powder with a concentrated sodium hydroxide solution.
Give Reasons
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Solution
No, zinc and aluminium cannot be distinguished by heating the metal powder with concentrated sodium hydroxide solution because both will form a white precipitate which is soluble in excess of sodium hydroxide.
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Metallurgy of Aluminium
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Chapter 13: Practical Work - EXERCISE-13 [Page 248]
