Question

Which of the following compound(s) are yellow in colour?

(a) CdS, (b) PbS, (c) CuS, (d) ZnS(cold), (e) PbCrO₄

Choose the correct answer from the options given below:

(1) (a), (c) and (e) only

(2) (a) and (e) only

(3) (b) and (d) only

(4) (a), (b) and (e) only

Answer 1

Correct option is : (2) (a) and (e) only

CdS, PbCrO₄ \(\Rightarrow\) yellow coloured

PbS, CuS \(\Rightarrow\) black coloured

ZnS \(\Rightarrow\) white coloured (when cold)