JEE MAIN - Chemistry (2021 - 16th March Evening Shift - No. 1)
Match List - I with List - II :
The correct match is :
| List - I Test/Reagents/Observation(s) |
List - II Species detected |
||
|---|---|---|---|
| (a) | Lassaigne's Test | (i) | Carbon |
| (b) | Cu(II) oxide | (ii) | Sulphur |
| (c) | Silver nitrate | (iii) | N, S, P, and halogen |
| (d) | The sodium fusion extract gives black precipitate with acetic acid and lead acetate |
(iv) | Halogen Specifically |
The correct match is :
(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
Explanation
(i) Lassaigne test is used to detect N, S, P, X element
(ii) Carbon and hydrogen are detected by heating the compound with copper (ii) oxide.
(iii) Halides are detected by silver nitrate
(iv) Sodium fusion extract gives black ppt. with acetic acid and lead acetate to confirm the presence of sulphur.
(ii) Carbon and hydrogen are detected by heating the compound with copper (ii) oxide.
(iii) Halides are detected by silver nitrate
(iv) Sodium fusion extract gives black ppt. with acetic acid and lead acetate to confirm the presence of sulphur.
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