Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: Exercise 1

Which of the following statements regarding oxidation and reduction are correct?
I. In oxidation, the loss of electron takes place, whereas, in reduction, the gain of electron takes place.
II. In oxidation, the gain of electron takes place, whereas, in reduction, the loss of electron takes place.
II. Oxidising agent decreases the oxidation number, but reducing agent increases the oxidation number.
IV. Oxidising agent increases the oxidation number, but reducing agent reduces the oxidation number.

Select the correct answer using the codes given below.

Which one among the following is an electrochemical cell that cannot be charged?

Which one of the following is correct regarding the reaction of fluorine with water?

$2 {\mathrm{F}}_2\left(\mathrm{g}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)⟶4{\mathrm{H}}^{+}\left(\mathrm{aq}\right)+4 {\mathrm{F}}^{-}\left(\mathrm{aq}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)$

Which of the following causes the rusting of iron?
I. Oxidation

II. Reduction
III. Chemical reaction with oxygen.
IV. Chemical reaction with ${\mathrm{CO}}_2$.
Select the correct answer from the codes given below.

Match the terms of Column $\mathrm{I}$ and Column $\mathrm{II}$ and choose the correct option from the codes given below.

Match List $\mathrm{I}$ and List $\mathrm{II}$ and select the correct answer by using the codes given below the lists.

Statement $\mathrm{I}$: When hydrogen gas is passed over heated metallic oxide, it removes the oxygen from it.

Statement $\mathrm{II}$: Hydrogen is an oxidising agent.

Which one of the following is a reduction reaction?