Rothera's Test - Lesser known facts for Class Assistant, Gold Medal examinations and PG students!

[@areejiffathaque1391]

Why liquor ammonia is added from the side of test tube ?

[@DrArindamGhoshBiochemistry]

So that it can be gently added by the walls to form layers. Drop by drop will lead to mixing and ring will not be formed.

[@anonymou5324]

Why ammonium sulphate is added sir?

[@ankitachauhan8662]

Thanku sir...

[@DrArindamGhoshBiochemistry]

😇

[@reapergaming5663]

Why ring is only formed in between the junction only.. it can be at bottom or top?

[@ekramul3338]

👍👍

[@DrArindamGhoshBiochemistry]

👌👌

[@siddharthshankar2271]

Purple ring-Ferro Penta Cyanin ring....

[@DrArindamGhoshBiochemistry]

V good 😊

[@abhishekkumarkushwaha7151]

Ferro Penta Cyanin

[@DrArindamGhoshBiochemistry]

Absolutely correct 👍