D-And F-Block Elements Ques 479
Question: $ ( X )+K_2CO_3+Air\xrightarrow{heat}( Y ) $
$ ( Y )+Cl_2\xrightarrow{{}}( Z )Pink $ Which of the following is correct-
Options:
A) $ X=black,MnO_2,Y=Blue, $ $ K_2CrO_4,Z=KMnO_4 $
B) $ X=green,Cr_2O_3,Y=Yellow, $ $ K_2CrO_4,Z=K_2Cr_2O_7 $
C) $ X=black,MnO_2\text{, }Y=green, $ $ K_2MnO_4,Z=KMnO_4 $
D) $ X=black,Bi_2O_3,Y=colourless $ $ KBiO_2,Z=KBiO_3 $
Show Answer
Answer:
Correct Answer: C
Solution:
$ \underset{(X)}{\mathop{2MnO_2}},+2K_2CO_3+\underset{(air)}{\mathop{O_2}},\xrightarrow{\Delta } $ $ 2K_2\underset{\begin{smallmatrix} green \\ (Y) \end{smallmatrix}}{\mathop{MnO_4}},+2CO_2\uparrow $
$ \underset{(Y)}{\mathop{2K_2MnO_4}},+Cl_2\xrightarrow{{}}\underset{(Z),Pink}{\mathop{2KMnO_4}},+2KCl $
