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General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements5 Marks
Question
Match the items of Column I with items of Column II and assign the correct code:
 
Column I
 
Column II
$(A)$
Pendulum
$(1)$
Chrome steel
$(B)$
Malachite
$(2)$
Nickel steel
$(C)$
Calamine
$(3)$
$Na_3AlF_6$
$(D)$
Cryolite
$(4)$
$CuCO_3.Cu (OH)_2$
 
 
$(5)$
$ZnCO_3$
  1. $A (1) B (2) C (3) D (4)$
  2. $A (2) B (4) C (5) D (3)$
  3. $A (2) B (3) C (4) D (5)$
  4. $A (4) B (5) C (3) D (2)$
✓

Answer

 
Column I
 
Column II
$(A)$
Pendulum
$(2)$
Nickel steel
$(B)$
Malachite
$(4)$
$CuCO_3.Cu (OH)_2$
$(C)$
Calamine
$(5)$
$Na_3AlF_6ZnCO_3$
$(D)$
Cryolite
$(3)$
$Na_3AlF_6$
  1. $A (2) B (4) C (5) D (3)$
Explanation:
  1. Pendulum is made up of nickel steel
  2. Malachite$-\ CuCO_3\ Cu\ (OH)_2$
  3. Calamine$-\ ZnCO_3$
  4. Cryolyte$-\ Na_3AlF_6$

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