Chemistry - Salt Analysis Question with Solution | TestHub
Borax Bead test is carried out when the original mixture is coloured. It is done with the help of a clean platinum wire on which a small loop is made at the end. When borax is heated on platinum wire loop a transparent glass like bead is obtained. The hot bead is brought in contact with salt till it reacts with fused borax and colour is imparted to the bead. Bead colour is noted.
List - I | List - II |
|---|---|
(P) Blue Green | (1) Mn2+ |
(Q) Yellow | (2) Cr3+ |
(R) Green | (3) Fe3+ |
(S) Violet | (4) Cu2+ |
Options:
Answer:
Solution:
The borax bead test identifies metal ions by characteristic bead colors.
- Blue-green bead: Cu²⁺
- Yellow bead: Fe³⁺
- Green bead: Cr³⁺
- Violet bead: Mn²⁺
Matching these to the given lists:
P (Blue-Green) 4 (Cu²⁺)
Q (Yellow) 3 (Fe³⁺)
R (Green) 2 (Cr³⁺)
S (Violet) 1 (Mn²⁺)
Therefore, the correct match is P 4; Q 3; R 2; S 1.