Metallurgy · Chemistry · WB JEE
Start PracticeMCQ (More than One Correct Answer)
WB JEE 2022
During the preparation of NH3 in Haber's process, the promoter(s) used is/are -
MCQ (Single Correct Answer)
WB JEE 2021
Extraction of a metal (M) from its sulphide ore (M2S) involves the following chemical reactions$$2{M_2}S + 3{O_2}\buildrel {Heat} \over
\longrightarr...
WB JEE 2019
In the Bayer's process, the leaching of alumina is done by using
WB JEE 2019
A copper coin was electroplated with Zn and then heated at high temperature until there is a change in colour. What will be the resulting colour?