1
Question
The platinum wire which is used in borax bead test is dipped in:
The platinum wire which is used in borax bead test is dipped in:
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Solution
The correct option is A powdered borax
The borax bead test is the most common. A small loop is formed at the end of a platinum wire. The loop is cleaned with concentrated hydrochloric acid and dipped in powdered borax, then heated in the flame of a Bunsen burner until the borax melts, forming a bead.
The powdered borax when heated gives a glassy bead.
The glassy bead is dipped in metal oxide and heated to get the characteristic bead color.
Option A is correct.
The borax bead test is the most common. A small loop is formed at the end of a platinum wire. The loop is cleaned with concentrated hydrochloric acid and dipped in powdered borax, then heated in the flame of a Bunsen burner until the borax melts, forming a bead.
The powdered borax when heated gives a glassy bead.
The glassy bead is dipped in metal oxide and heated to get the characteristic bead color.
Option A is correct.
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