Embibe Experts Solutions for Chapter: Reactivity Series and Electrochemistry, Exercise 1: Kerala Board-2018

Zinc piece and zinc powder are taken in two test tubes and equal amount of dil. $\mathrm{HCl}$ is added.
(a) In which test tube does the reaction proceed faster? 
(b) Give reason. 
(c) Give an instance in daily life, where such condition is made use. 

What is the gas liberated when the metals react with dilute acids?

Electrolysis of molten Sodium chloride $\left(\mathrm{NaCl}\right)$ is conducted.

Which are the ions present in the molten sodium chloride?

Electrolysis of molten Sodium chloride $\left(\mathrm{NaCl}\right)$ is conducted.

Which is the gas liberated at the positive electrode during electrolysis.

Electrolysis of molten Sodium chloride$\left(\mathrm{NaCl}\right)$ is conducted.

Write the chemical equation of the reaction taking place at the cathode.

Some materials are given below:

From the given materials, choose the appropriate ones to construct a galvanic cell and draw the diagram of the cell.

(Order of reactivity: $Mg>Fe>Cu> Ag$)

Some materials are given below:

Which is the anode of this cell?

Some materials are given below:

Write the chemical equation fo the reaction taking place at the cathode.