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NCERT Solutions for Class 10 Social Science Chapter 3 - Water Resources
Class 10 maths chapter 3 exercise ncert solutions in hindi explanation. Like share subscribe PLEASE CHECK PLAYLIST FOR MORE VEDIOS. Now All videos. We Ncert Solutions For Class 10th Science Chapter 3 Relations Ncert Solutions For Class 10th Science Chapter 3 Relations Ncert Solutions For Class 10th Science Chapter 3 Relations have prepared the NCERT Solutions for Class 10 Science Textbook according to the latest syllabus of CBSE for Board Exams of Science is the most popular choice of every students after passing Class 10th. But in the Class 10, Science subject is compulsory for all.� Here, we have provided chapterwise NCERT Solutions of Science Class 10th which are accurate Ncert Solutions For Class 10th Science Chapter 3 Relations and detailed. The answers are prepared by our StudyRankers experts who have taken care of each level and difficulty while answering the questions. You can Ncert Solutions For Class 10th Science Chapter 12 Sum view these solutions by clicking on the links of chapters provided here. List of all Chapters of NCERT Solutions for Class 10 Science. NCERT Solutions of Chapter 1 Chemical Reactions and Equations. 30th November. Dear Diary. I am inundated with feelings of doubt and remorse at what happened today.� You can download Free NCERT Solutions Chapter 3 - The Letter, Class 10, English | EduRev Notes pdf from EduRev by using search above. You can also find NCERT Solutions Chapter 3 - The Ncert Solutions For Class 10th Science Chapter 3 Relations Letter, Class 10, English | EduRev Notes ppt and other Class 10 slides as well. If you want NCERT Solutions Chapter 3 - The Letter, Class 10, English | EduRev Notes Tests & Videos, you can search for the same too. Class 10 NCERT Solutions Chapter 3 - The Letter, Class 10, English | EduRev Notes Summary and Exercise are very important for perfect preparation.� , Class , Objective type Questions., NCERT Solutions Chapter 3 - The Letter., Exam., Important questions.

Aluminium and copper metals are good conductor of heat. When exposed to air, these develop a Ncert Solutions For Class 10th Science Chapter 3 Relations Ncert Solutions For Class 10th Science Chapter 3 Relations layer of oxide. This makes it resistant to further corrosion. Calcination: i The ore is heated is absence of air. Roasting: i The ore is heated in the presence of air. In iconic compounds, ions are joined together due to powerful electrostatic forces, therefore, considerable energy is required to separate these ions and break the lattice.

Thus ionic compounds have high melting points. There are solids due to strong force of attraction between oppositely charged ions resulting in the formation of hard crystalline lattice.

An alloy is a homogeneous mixture of two or more metals, or a Ncert Solutions For Class 10th Science Chapter 3 Relations Ncert Solutions For Class 10th Science Chapter 3 Relations metals and a non-metal. It is prepared by first melting the main Ncert Solutions For Class 10th Science Chapter 3 Relations metal, and then dissolving the required amount of other metals or non-metals. This mixture is then cooled to form an alloy of a given composition. Metallurgy involves various processes starting with the treatment of ore to getting metals in the pure form. Question 1: Compare the properties of a typical metal and non-metal on the basis of the following: i nature of oxide formed by them ii conductivity.

Answer : i Metals from basic oxide, e. Non-metals from acidic oxide, e. Non-metals do not conduct heat or electricity, e. Question 2: How is an ore different from a mineral? Justify the statement with examples. Answer 2: The metals found in nature in combined state are called minerals. If some minerals contain a very high percentage of a particular metal and the metals can be Ncert Solutions For Class 10th Science Chapter 3 Relations profitably and economically extracted, then it is called an ore.

Question 1: Atmospheric air always contains moisture. Then, how can you protect iron articles from the affect of atmosphere? Answer 1: Iron articles can be protected from the effect of atmosphere by painting, oiling and greasing. This gives temporary protection to iron articles. For long time protection, galvanising or chrome plating are quite useful. Question 2: Explain, why some metals are more reactive and others less reactive and others less reactive? OR What determines Ncert Solutions For Class 10th Science Chapter 3 Relations Ncert Solutions For Class 10th Science Chapter 3 Relations the reactivity of metals?

Answer 2: When metals react, they lose electrons to form positive ions. Such metals which can lose electrons easily to form positive ions when reacted with other substances, are reactive metals. On Ncert Solutions For Class 10th Science Chapter 3 Relations the other hand, if a metal Ncert Solutions For Class 10th Science Chapter 6 Insta loses electrons less rapidly to form positive ions, it will reacts slowly with other substances. Such a metal will be less reactive. For example, sodium atom is a very reactive metals because it readily loses one electron, forms a positive ion which then combines with other substances.

On the other hand, lead atom loses electrons Ncert Solutions For Class 10th Science Chapter 3 Relations with difficulty to form positive ions, so lead metal is less reactive. Metals that are less reactive than hydrogen do not displace it. For Ncert Solutions For Class 10th Science Chapter 3 Relations example: copper and silver.

Galvanisation: An iron article is coated with a Science Solutions For 10th Chapter 3 Class Ncert Relations layer of zinc metal, which prevents the iron to come in contact with oxygen and moisture. Hence, rusting is prevented. Why are aluminium and copper metals used for making cooking vessels? Why is sodium kept immersed in kerosene oil?

Sodium is very reactive. If kept exposed to air, it catches fire. Distinguish between calcinations and roasting. Ionic compounds have high melting point. Give reason in support your answer. Generally, Ionic compounds are hard crystalline solids. What are alloys? What is meant by metallurgy? Important Questions on 10th Science Chapter 3 Name two metals which will displace hydrogen from dilute acids, and two metals which will not. Metals that are more reactive than hydrogen displace it from dilute acids.

For example: sodium and potassium. What are the two important ways to prevent the rusting of iron? Oiling, greasing, or painting: By applying oil, grease, or paint, the surface becomes water proof and the moisture and oxygen present in the air cannot come into direct contact with iron.

Platinum, gold and silver are used to make jewellery. Platinum, gold, and silver are used to make jewellery because they are very lustrous. Also, they are very Ncert Solutions For Class 10th Science Chapter 3 Relations less reactive and do not corrode easily. Why are Sodium, potassium and lithium stored under oil? Sodium, potassium, and lithium are very reactive metals Ncert Solutions For Class 10th Science Chapter 3 Relations and react very vigorously with air as well as water. Therefore, they Ncert Solutions For Class 10th Science Chapter 3 Relations are kept immersed in kerosene oil in order to prevent their contact with air and moisture.

Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. Though aluminium is a highly reactive metal, it is resistant to corrosion. This is because aluminium reacts with oxygen present in air to form a thin layer of aluminium oxide. This oxide layer is very stable and prevents further reaction of aluminium Ncert Solutions For Class 10th Science Chapter 3 Relations with oxygen. Also, it is light in weight and a good conductor Ncert Solutions For Class 10th Science Chapter 3 Relations of heat. Hence, it is used to make cooking utensils.

Carbonate and Ncert Solutions For Class 10th Science Chapter 3 Relations Sulphide ores are usually converted into oxides during the process of extraction. Carbonate Ncert Solutions For Class 10th Science Chapter 3 Ncert Solutions For Class 10th Science Chapter 3 Relations Relations and sulphide ores are usually converted into oxides during the process Ncert Solutions For Class 10th Science Chapter 3 Relations of extraction because metals can be easily extracted from their oxides rather Ncert Solutions For Class 10th Science Chapter 3 Relations than from their carbonates and sulphides. Chapter 4: Carbon and its Compounds Ncert Solutions For Class 10th Science Chapter 3 Relations �.

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