NCERT Solutions Class 8 Science Chapter 4 Materials Metals and Non – Metals – Here are all the NCERT solutions for Class 8 Science Chapter 4. This solution contains questions, answers, images, explanations of the complete chapter 4 titled Materials Metals and Non – Metals From of Science taught in class 8. If you are a student of class 8 who is using NCERT Textbook to study Science, then you must come across chapter 4 Materials Metals and Non – Metals . After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 8 Science Chapter 4 Materials Metals and Non – Metals in one place.
NCERT Solutions Class 8 Science Chapter 4 Materials : Metals And Non-Metals
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For a better understanding of this chapter, you should also see summary of Chapter 4 Materials : Metals And Non-Metals , Science, Class 8.
| Class | 8 |
| Subject | Science |
| Book | Science |
| Chapter Number | 4 |
| Chapter Name |
Materials : Metals And Non-Metals |
NCERT Solutions Class 8 Science chapter 4 Materials : Metals And Non-Metals
Class 8, Science chapter 4, Materials : Metals And Non-Metals solutions are given below in PDF format. You can view them online or download PDF file for future use.
Materials : Metals And Non-Metals
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Question & Answer
Q.1: Which of the following can be beaten into thin sheets?
(a) Zinc
(b) Phosphorus
(c) Sulphur
(d) Oxygen
Ans : (a) Zinc
Q.2: Which of the following statements is correct?
(a) All metals are ductile.
(b) All non-metals are ductile.
(c) Generally, metals are ductile.
(d) Some non-metals are ductile.
Ans : (c) Generally, metals are ductile However, mercury metal— a liquid at room temperature — cannot be drawn into wires and is not ductile.
Q.3: Fill in the blanks.
(a) Phosphorus is a very________ non-metal.
(b) Metals are _________ conductors of heat and ________ .
(c) Iron is ___________ reactive than copper.
(d) Metals react with acids to produce _________ gas
Ans : (a) Phosphorus is a very reactive non-metal. (b) Metals are good conductors of heat and electricity (c) Iron is more reactive than copper. (d) Metals react with acids to produce hydrogen gas.
Q.4: Mark ‘T’ if the statement is true and ‘F’ if it is false.
(a) Generally, non-metals react with acids. ( )
(b) Sodium is a very reactive metal. ( )
(c) Copper displaces zinc from zinc sulphate solution. ( )
(d) Coal can be drawn into wires( )
Ans : (i) Generally, non-metals react with acids. (F) (ii) Sodium is a very reactive metal. (T) (iii) Copper displaces zinc from zinc sulphate solution. (F) (iv) Coal can drawn into wires, (F)
Q.5: Give reasons for the following.
(a) Aluminium foils are used to wrap food items.
(b) Immersion rods for heating liquids are made up of metallic substances.
(c) Copper cannot displace zinc from its salt solution.
(d) Sodium and potassium are stored in kerosene
Ans : (a) Aluminium foils are used to wrap food items because aluminium metal is malleable. Therefore, it can be beaten into thin foils. (b) Metals are good conductors of heat and electricity. Therefore, immersion rods for heating liquids are made of metallic substances. (c) A metal can displace a less reactive metal from its salt in an aqueous solution. But zinc is more reactive than copper. Therefore, copper cannot displace zinc from its salt solution. Cu(s) + ZnS04 (aq) No reaction (d) Sodium and potassium are stored in kerosene because they are highly reactive elements. They can easily catch fire even when in contact with air.
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