Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Hard-Class 12
When performing the borax bead test, which of the following steps ensures that the platinum wire is clean and ready for accurate observation?
A
Heat the loop until red hot and dip it in borax powder, ensuring a transparent bead.
B
Dip the loop in borax and salt before heating it for the first time.
C
Ensure the bead is colored before dipping in the salt.
D
Use a different wire for each salt tested without cleaning.
Correct Answer
Option A
Detailed Explanation
The NCERT context specifies that the borax bead should be transparent and colorless after heating, indicating the wire is clean.
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