Test: Redox Reactions


5 Questions MCQ Test Science Class 10 | Test: Redox Reactions


Description
This mock test of Test: Redox Reactions for Class 10 helps you for every Class 10 entrance exam. This contains 5 Multiple Choice Questions for Class 10 Test: Redox Reactions (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Redox Reactions quiz give you a good mix of easy questions and tough questions. Class 10 students definitely take this Test: Redox Reactions exercise for a better result in the exam. You can find other Test: Redox Reactions extra questions, long questions & short questions for Class 10 on EduRev as well by searching above.
QUESTION: 1

In which of the following compounds, nitrogen exhibits highest oxidation state?

Solution:

In hydrazoic acid (N3H)

nitrogen shows −1/3 oxidation state.
N3H
3+ 1 = 0,
3= −1,
= −1/3
oxidation state of nitrogen is highest in N3H

QUESTION: 2

An oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances, which of following is/are oxidizing agents? 
a. Oxygen
b. Hydrogen peroxide
c. Gains oxygen

Solution:

An oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances — in other words to cause them to lose electrons. Common oxidizing agents are oxygen, hydrogen peroxide and the halogens.

QUESTION: 3

Which substance is reduced in the following reaction?

ZnO + C → Zn + CO

Solution:

ZnO + C → Zn + CO

The above reaction is already balanced.
In this reaction, zinc oxide is reduced to zinc by reducing agent agent coke and carbon is oxidised to carbon monoxide.

QUESTION: 4

Rancidity can be prevented by:

Solution:

It can be prevented by following methods:

(i) The packing of food materials should be replaced the air with Nitrogen.

(ii) The food materials should be placed at very low temperatures.

(iii) Addition of antioxidants also prevents rancidity process.

QUESTION: 5

Chemically rust is:

Solution:

Chemically, rust is hydrated ferric oxide (Fe2O3.nH2O) as n molecules of water are attached.

Related tests