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JEE Main202126 Feb 2021Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Match List- I with List- II . List- I (Ore) List- II (Element Present) a Kernite p Tin b Cassiterite q Boron c Calamine r Fluorine d Cryolite s Zinc Choose the most appropriate answer from the options given below:

Options

  1. Aa → r , b → p , c → q , d → s
  2. Ba → q , b → s , c → p , d → r
  3. Ca → p , b → r , c → s , d → q
  4. Da → q , b → p , c → s , d → r

Correct answer

D. a → q , b → p , c → s , d → r

Step-by-step solution

Kernite = Na 2 B 4 O 7 · 4 H 2 O The chemical formula for Kernite is = Na 2 B 4 O 7 · 4 H 2 O . It contains boron. Cassiterite = SnO 2 Cassiterite is an ore of Sn.It is also called tinstone and has molecular formula of SnO 2 ​. Calamine = ZnCO 3 Calamine is an ore of zinc. It is zinc carbonate ZnCO 3 ​. Cryolite = Na 3 AlF 6 , which consists of Aluminium, Sodium & Fluorine.

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