Which of the following metals is usually extracted from its ore by electrolytic reduction?
Aluminium
Highly reactive metals such as aluminium cannot be reduced by ordinary chemical reducing agents, so they are extracted from their molten ore using electrolytic reduction. Hence, Aluminium is correct.
Similar Questions
In electrolytic refining, the pure metal is used as:
During the electrolytic refining of copper, which of the following correctly matches the components and their roles?
Component Role in Refining Process A. Pure Copper i. Anode B. Impure Copper ii. Cathode C. Acidified Copper Sulphate iii. Electrolyte Which of the following statements are correct for electrolytic refining? a. Copper, zinc, and nickel are refined electrolytically. b. In this method, a thin strip of pure metal is used as cathode. c. The insoluble impurities settled at bottom of the anode are known as anode mud.
What happens at the anode during anodising?
What is used as an anode in the electrolytic refining of nickel?
Which method is commonly used to extract sodium from its compound?
Which of the following is a product formed at the cathode during the electrolysis of brine?
Anodising is a process used to improve the appearance and durability of aluminium articles. Which of the following statements best explains the principle behind anodising?
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
Assertion (A): Metals such as sodium and potassium are extracted by electrolysis.
Reason (R): These metals are highly reactive and cannot be obtained by reduction with carbon.
Important Questions from Electrochemistry
- At $298 \, K$, given the standard electrode potentials: $E^\circ_{Cu^{2+}/Cu} = 0.34 \, V$, $E^\circ_{Zn^{2+}/Zn} = -0.76 \, V$, $E^\circ_{Fe^{2+}/Fe} = -0.44 \, V$, and $E^\circ_{Ag^{+}/Ag} = 0.80 \, V$.
Based on these values, which of the following reactions is NOT expected to occur spontaneously under standard conditions? You are given three metals 'X', 'Y' and 'Z'. Metal 'X' is found to react with an aqueous solution of both YSO 4and ZSO 4whereas metal 'Z' is found to react only with aqueous solution of YSO 4. Based on these observations, select the correct statement from the following.
The mobility of a divalent cation in water is 8 × 10-8 m2 V-1 s-1. The effective radius of the ion is (viscosity of water = 1 cP : c = 1.6 × 10-19 C)
The electrical double layer model among the following that consists of both fixed and diffuse layers is
If the overpotential of an electrolysis process is increased from 0.5 V to 0.6 V, then the ratio of current densities (In \(\frac{\int0.6 }{\int0.5}\)) of the electrolysis will be equal to (given transfer co - efficient = 0.5)
