4. Materials : Metals And Non-Metals Class 8 Science [LATEST] Solutions Additional Questions With Solutions in English - CBSE Study
NCERT Solutions for Class 8 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 4. Materials : Metals And Non-Metals with detailed explanations and step-by-step answers for better exam preparation. Each Additional Questions With Solutions is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 8 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 8 English Medium Science All Chapters:
4. Materials : Metals And Non-Metals
4. Additional Questions With Solutions
Additional Questions With Solutions
Q1: What is malleability?
Ans: The property of metals by which they can be beaten into thin sheets is called malleability.
Q2: What is ductility?
Ans: The property of metal by which it can be drawn into wires is called ductility.
Q3: What is sonorous?
Ans: Metals produce ringing sounds, They are said to be sonorous.
Q4: Define metals.
Ans: The materials which have the property of hard, malleable, ductile, sonorous and good conductor of heat and electricity. These are called metals.
Q5: Define non-metals.
Ans: Some materials are soft and dull and they break down into powdery mass on tapping with hammer. They are not sonorous and are poor conductors of heat and electricity. These materials are called non-metals. Examples of non-metals are sulphur, carbon, oxygen, phosphorus, etc.
Q6: What is the property of metallic oxide?
Ans: Basic in nature.
Q7:What is the property of non-metallic oxide?
Ans: Acidic in nature.
Q8: Complete the following reaction.
(i) Magnesium (Mg) + Oxygen (O2)® 2MGO.
(ii) Iron (Fe) + Oxygen (O2)+ Water (H2O) ® Fe3 O4 +2H2.
Q9: Why is phosphorous is stored in water?
Ans: Phosphorus is a very reactive non-metal. It catches fire if exposed to air. To prevent the contact of phosphorus with atmospheric oxygen, it is stored in water.
Q10: Which gas burns with Pop sound?
Ans: Hydrogen.
Q11: What does the ‘pop’ sound indicate?
Ans: The pop sound indicates the presence of hydrogen gas.
Q12: What is produced When Metals react with sodium hydroxide?
Ans: Metals react with sodium hydroxide to produce hydrogen gas.
Q13: Write the chemical formula of rust.
Ans: Fe2O3
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