NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice
Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false (i) In Gold Schmidt thermite process aluminium acts as a reducing agent. (ii) M g is extracted by electrolysis of aqueous solution of M g C l 2 (iii) Extraction of P b is possible by carbon reduction method (iv) Red Bauxite is purified by Serpeck’s process
Options
- AT T T F
- BT F F T
- CF T T T
- DT F T F
Correct answer
D. T F T F
Step-by-step solution
(i) C r 2 O 3 + 2 A l R . A . → Δ A l 2 O 3 + 2 C r ; Δ H = - v e (ii) M g is extracted by electrolysis of fused M g C l 2 and N a C l (iii) P b O + C → P b + C O (iv) Red Bauxite is purified by Baeyer’s process Hence (ii) and (iv) statement are false here while (i) and (iii) are true.