Which gas is liberated when a metal reacts with an acid? It oxidises the H 2 produced to water and itself gets reduced to any of the nitrogen oxides (N 2 O, NO, NO 2 ). Sodium reacts violently with dilute mineral acids and displaces hydrogen from them. Question 6. Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas. Some metals reacts with dilute Nitric acid (HNO 3) and produces salt and any of the nitrogen oxides (N 2 O, NO, NO 2) and water. Mg: reacts with hot water. How will you test the presence of this gas? The metal X reacts with dilute hydrochloric acid to form a gas Y. The gas produced when metals reacts with dilute acids is: (a) nitrogen (b) carbon dioxide (c) oxygen (d) hydrogen. Question 1. NaOH) by their reaction with Litmus solution (blue/red) Zinc metal Solid sodium carbonate Materials Required Test tubes, test tube stand, test tube holder, cork, droppers, boiling tube, match-box, burner, […] Reaction of aluminium with dilute hydrochloric acid: Aluminium chloride and hydrogen gas are formed. There are a few highly reactive metals, which react with dilute acids, water, and oxygen, and include potassium, sodium, lithium, and calcium, to name a few. Name the metal which reacts with a very dilute HNOs to evolve hydrogen gas. 2Al + 6HCl ⇨ 2AlCl 3 + 3H 2. Name a non-metal that conducts electricity. Video Explanation. Answer Reaction with dilute Acids: Metal + Dilute Acid → Salt + H2. You can refer to NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-metals to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. When a metal react with dilute nitric acid,then hydrogen gas is not evolved.Nitric acid is a strong oxidising agent.As soon as hydrogen gas is formed in reaction between metal and dilute nitric acid,the nitric acid oxidises this hydrogen to water.Nitric acid itself is reduced to nitrogen oxides such as nitrogen monoxide,dinitrogen monoxide. This shows that sodium is … View Answer. 14. Bring a burning matchstick near to it, H 2 will burn explosively with ‘pop’ sound. Temperature – warm acid solutions attack metals faster than cold solutions. Question 25. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Metal + HNO3 → H2 not evolved. 1 answer. Answer: Graphite (carbon) is an example of a non-metal that conducts electricity. Cold, dilute nitric acid reacts with copper to form _____ (hydrogen, nitrogen dioxide, nitric oxide). The ability of metals to be drawn into thin wires is known as Answer (c) sodium Sodium reacts violently with cold water because it is high in the reactivity series. The metal which reacts violently with cold water is: (a) zinc (b) aluminium (c) sodium (d) copper. (CBSE 2011) Answer: Magnesium The metal X also reacts with sodium. Al, Fe, Zn react with steam to from metal hydroxide & H2. Na & K: react violently with cold water. Acid + Metal → Ionic compound + Hydrogen gas Mg + 2HCl ⇨ MgCl 2 + H 2. Ca: reacts less violently. Name two metals which will displace hydrogen from dilute acids and two metals which will not. When zinc metal reacts with dilute hydrochloric acid, the gas evolved (a) supports combustion (b) turns lime water milky (c) bums with a pop sound (d) has a pungent odour. (CBSE 2011) Answer: Hydrogen gas is formed. Surface area of the metal – powdered metals react faster than large lumps. For acids such as dilute hydrochloric acid and dilute sulfuric acid the general equation for their reaction with reactive metal is. When zinc reacts with dilute hydrochloric acid (a) the surface of zinc becomes brighter (b) the surface of zinc becomes black and dull (c) the metal turns into powder CBSE Class 10 Science Lab Manual – Properties of Acids and Bases EXPERIMENT 2(a) Aim To study the properties of acids (dil. HCl) and bases (dil. Question 27. It is because HNO 3 is a strong oxidising agent. Gas released in the following reaction will be: Reaction of magnesium metal with dilute hydrochloric acid: Magnesium chloride and hydrogen gas are formed when magnesium reacts with dilute hydrochloric acid. Reason- HNO3 is strong oxidizing agent & oxidized H2 to water. Metals and Non-metals Class 10 MCQs Questions with Answers. asked Jun 22 in Chemistry by Renu01 (52.6k points) materials; metals and non metals; class-8; 0 votes. ⇨ 2AlCl 3 + 3H 2 is formed than large lumps as dilute hydrochloric acid: chloride. And displaces hydrogen from them MgCl 2 + H 2 will burn explosively with ‘ pop ’ sound: chloride... 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