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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements5 Marks
Question
Match the solutions given in Column I and the colours given in Column II.
 
Column I
(Aqueous solution of salt)
 
Column II
(Colour)
$(i)$
$FeSO_4.7H_2O$
$(a)$
Green
$(ii)$
$NiCl_2.4H_2O$
$(b)$
Light pink
$(iii)$
$MnCl_2.4H_2O$
$(c)$
Blue
$(iv)$
$CoCl_2.6H_2O$
$(d)$
Pale green
$(v)$
$Cu_2Cl_2$
$(e)$
Pink
 
 
$(f)$
Colourless
✓

Answer

 
Column I
(Aqueous solution of salt)
 
Column II
(Colour)
$(i)$
$FeSO_4.7H_2O$
 $(d)$ Pale green
$(ii)$
$NiCl_2.4H_2O$
$(a)$
 Green
$(iii)$
$MnCl_2.4H_2O$
$(b)$
 Light pink
$(iv)$
$CoCl_2.6H_2O$
$(e)$
 Pink
$(v)$
$Cu_2Cl_2$
$(f)$
 Colourless
Explanation:
  1. $FeSO_47H_2O –$ Pale green
  2. $NiCl_24H_2O -$ Green
  3. $MnCl_24H_2O -$ Light Pink
  4. $CoCl_26H_2O -$ Pink
  5. $Cu_2Cl_2–$ Colourless

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