- Metals and Non-metals Class 10 Case Study Questions Science Chapter 3
Last Updated on August 26, 2024 by XAM CONTENT
Hello students, we are providing case study questions for class 10 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 10 science. In this article, you will find case study questions for cbse class 10 science chapter 3 Metals and Non-metals.
Table of Contents
Case Study Questions on Metals and Non-metals
Question 1:
Read the following and answer the questions given below:
Metals as we know, are very useful in all fields, industries in particular. Non-metals are no less in any way. Oxygen present in air is essential for breathing as well as for combustion. Non-metals form a large number of compounds which are extremely useful, e.g., ammonia, nitric acid, sulphuric acid, etc.
Non-metals are found to exist in three states of matter. Only solid non-metals are expected to be hard however, they have low density and are brittle. They usually have low melting and boiling points and are poor conductors of electricity.
(i) is a non-metal but is lustrous. (a) Phosphorus (b) Sulphur (c) Bromine (d) Iodine
Difficulty Level: Medium
Ans. Option (d) is correct. Explanation: Iodine is a lustrous non-metal.
(ii) Which of the following is known as ‘King of chemicals’? (a) Urea (b) Ammonia (c) Sulphuric acid (d) Nitric acid
Ans. Option (c) is correct. Explanation: H 2 SO 4 is known as ‘King of Chemicals’.
(iii) Which of the following non-metals is a liquid? (a) Carbon (b) Bromine (c) Iodine (d) Sulphur
Ans. Option (b) is correct. Explanation: Bromine exists as a liquid.
(iv) Hydrogen is used (a) for the synthesis of ammonia (b) for the synthesis of methyl alcohol (c) in welding torches (d) all of these.
Ans. Option (d) is correct.
(v) Generally, non-metals are bad conductors of electricity but ‘X’ which is a form of carbon is a good conductor of electricity and is an exceptional non-metal. ‘X’ is (a) diamond (b) graphite (c) coal (d) coke.
Ans. Option (b) is correct. Explanation: Graphite conducts electricity because of the delocalised electrons in its structure.
Question 2:
On the basis of reactivity of different metals with oxygen, water and acids as well as displacement reactions, the metals have been arranged in the decreasing order of their reactivities. This arrangement is known as activity series or reactivity series of metals.
The basis of reactivity is the tendency of metals to lose electrons. If a metal can lose electrons easily to form positive ions, it will react readily with other substances. Therefore, it will be a reactive metal. On the other hand, if a meal loses electrons less rapidly to form a positive ion, it will react slowly with other substances. Therefore, such a metal will be less reactive.
(i) Which of the following metals is less reactive than hydrogen? (a) Copper (b) Zinc (c) Magnesium (d) Lead
Ans. Option (a) is correct. Explanation: Copper is placed below hydrogen in activity series therefore, it is less reactive than hydrogen.
(ii) Which of the following metals is more reactive than hydrogen? (a) Mercury (b) Platinum (c) Iron (d) Gold
Ans. Option (c) is correct. Explanation: Iron is placed above hydrogen in activity series therefore, it is more reactive than hydrogen.
(iii) Which of the following metals reacts vigorously with oxygen? (a) Zinc (b) Magnesium (c) Sodium (d) Copper
Ans. Option (c) is correct.
(iv) Which of the following represents the correct order of reactivity for the given metals? (a) Na>Mg>Al>Cu (b) Mg>Na>Al>Cu (c) Na>Mg>Cu>Al (d) Mg>Al>Na>Cu
Ans. Option (a) is correct.
(v) Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because HNO3 is a strong oxidising agent. It oxidises the H2 produced to water and itself gets reduced to any of the nitrogen oxides (N20, NO, NO2). But and react with very dilute HNO3 to evolve H2 gas. (a) Pb, Cu (b) Na, K (c) Mg, Mn (d) Al, Zn
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Topics from which case study questions may be asked
- Physical Properties of Metal and Non – Metals.
- Chemical Properties of Metals.
- Chemical Properties of Non-Metals.
- Electronic Configuration of Metals and Non-Metals.
- Metallurgy.
- Metalloids.
- Extractive Metallurgy of Iron.
This chapter deals with the physical and chemical properties of metals and non-metals.
Frequently Asked Questions (FAQs) on Metals and Non-metals Case Study Questions
Q1: what are case study questions for cbse examinations.
A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.
Q2: Why are case study questions important for understanding class 10 science chapters?
A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.
Q3: How should students approach answering case study questions for CBSE?
A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of chemical reactions and equations, and formulate well-supported solutions or responses.
Q4: Are there any resources available online for students to practice case study questions on class 10 science chapters for CBSE exams?
A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. If you need more case study questions for your preparation, then you visit Physics Gurukul website.
Q5: How can students effectively prepare for case study questions on Metals and Non-metals for CBSE exams?
A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.
Q6: How can teachers incorporate case study questions on Metals and Non-metals class 10 science into classroom teaching?
A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of Metals and Non-metals.
Q9: A student performs an experiment in which he dipped a copper coil into the silver nitrate solution. What will be observed from this experiment?
A9: A grey-coloured layer of silver appears on the surface of the copper coil.
Q10: The atomic number of two elements, A and B, are 12 and 8, respectively. What type of compound is formed when they combine?
A10: The compound formed is AB which is ionic in nature. As we know, an ionic compound is a chemical compound in which ions are held together by electrostatic force. The electronic configuration of two elements, A and B, are 2, 8, 2 and 2, 6, respectively. From their electronic configuration, we see that A (magnesium) is a metal and B (oxygen) is a non-metal; thereby, A loses its valence electrons and forms a cation, while B accepts those electrons and forms an anion. These oppositely charged ions are drawn closer due to electrostatic forces, and an ionic compound (MgO) is formed.
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