Class 8 Science Chapter 4 MCQ (Multiple Choice Questions) of Materials: Metals and Non-Metals. Practice here the complete NCERT Textbook Chapter 4 of class 8 Science in the form of MCQs with answers and explanation for academic session 2022-2023. Give more and more test to be confident in topic of metals and non-metals. Every time you will get a set of new five questions extracted from 8th science chapter 4.
Class 8 Science Chapter 4 MCQ for 2022-23
Class: 8 | Science |
Contents: | Multiple Choice Questions – MCQ Tests |
Class 8 Science Chapter 4 MCQ for Exams
Class 8 Science Chapter 4 MCQ tests are given below. Tests are divided in sets of 5 questions. After selecting the option you may see the correct answer and its explanation also. All the questions are confined to grade 8 science chapter 4 NCERT textbook only. To attend a new test, a Start a New Test, button is given at the end.
Which of the following property is not responsible for copper to be used as “Electrical Conduction wires”?
Boojho is writing some statements, choose the correct statement and help him:
Generally, metallic oxides are basic and non-metallic oxides are acidic in nature. Solution of which of the following oxides in water will change the color of blue litmus to red?
How do we get “Sulfuric Acid”?
Considered the question, and choose the best answer. How do we get “Sulphur dioxide”?
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is:
Boojho appeared in class test where he wrote some statements but he confused to know the incorrect statement. Would you help him to know that?
Paheli wants to know that how do we get “magnesium hydroxide solution”?
Paheli appeared in class test where she wrote some statements but she confused to know the incorrect statement. Would you help her to know that?
Consider the statements carefully and choose which of the following statement is or are correct?
Paheli is writing some statements but she confused to know whether the statements are incorrect? Would you help her?
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Boojho is writing some statements, choose the correct statement and help him:
Materials which can be drawn into wires are called ductile. Which of the following is not a ductile material?
Mohan is writing some statements, choose the incorrect statements and help him:
Considered the question, and choose the best answer: “A non-metal which forms a neutral oxide”.
Paheli is writing some statements, choose the incorrect statements and help her:
The substance that will be flattened on beating with a hammer is:
Which of the following statement is or are incorrect?
Boojho appeared in class test where he wrote some statements but he confused to know the correct statement. Would you help him to know that?
Paheli wants to know that how do we get “magnesium hydroxide solution”?
How do we get “Sulfuric Acid”?
A purple colored non-metal forms of brown solution in alcohol which is applied on wounds as an antiseptic. Name the non-metal.
Consider the following statements and choose the incorrect one:
What is meant by lustre in Class 8 Science Chapter 4?
Metals generally shine brilliantly and can be highly polished. The electronic structure of metals is such that the metals are able to reflect incident light. This characteristic metallic feature is called lustre.
Why metals are called ductile as in 8th Science ch. 4?
Ability of the metals to be melted and drawn into thin wires is called ductility. Because of this property, metals are known as ductile.
What happened when metal react with dilute acids explain as 8th Science Chapter 4?
Most metals react with dilute acids (Sulphuric and hydrochloric acids) by replacing hydrogen and forming a salt. Hydrogen gas is released.
What is an alloy according to Class 8 Science Chapter 4?
Alloy is a homogeneous mixture of two or more metals or of a metal and one or more non-metals
Physical Properties of Metals
Physical State: | Metals are generally solids at room temperature. Mercury (Hg) is the only exception which is liquid at room temperature. |
Malleability: | Metals can be spread by hammered or beaten into thin sheets, without breaking because metallic bonds in the metals do not break easily. Gold (Au), silver (Ag) are highly malleable elements. |
Ductility: | Ability of the metals to be melted and drawn into thin wires is called ductility. |
Lustre: | Metals generally shine brilliantly and can be highly polished. The electronic structure of metals is such that the metals are able to reflect incident light. This characteristic metallic feature is called lustre. |
Conductor: | In metals, the bonds are formed by excess or free electrons moving around large array of atoms. These electrons are able to conduct electricity and heat. |
Density of Metals
Density of metals is high. Only sodium (Na) and potassium (K) have densities less than water. Thus all metals are hard meterials except sodium, potassium and lead which are soft metals.