It is because HNO 3 is a strong oxidising agent. Name one metal which reacts with dilute hydrochloric acid to produce hydrogen gas. View Answer. Ca: reacts less violently. Na & K: react violently with cold water. The metal which reacts violently with cold water is: (a) zinc (b) aluminium (c) sodium (d) copper. How will you test the presence of this gas? The ability of metals to be drawn into thin wires is known as This shows that sodium is … 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. Answer 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, […] 2Al + 6HCl ⇨ 2AlCl 3 + 3H 2. HCl) and bases (dil. Question 25. 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. Bring a burning matchstick near to it, H 2 will burn explosively with ‘pop’ sound. Answer: Graphite (carbon) is an example of a non-metal that conducts electricity. Question 6. Name two metals which will displace hydrogen from dilute acids and two metals which will not. Acid + Metal → Ionic compound + Hydrogen gas Question 1. The gas produced when metals reacts with dilute acids is: (a) nitrogen (b) carbon dioxide (c) oxygen (d) hydrogen. Name the metal which reacts with a very dilute HNOs to evolve hydrogen gas. 1 answer. 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. Metals and Non-metals Class 10 MCQs Questions with Answers. (CBSE 2011) Answer: Hydrogen gas is formed. 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 14. The metal X reacts with dilute hydrochloric acid to form a gas Y. asked Jun 22 in Chemistry by Renu01 (52.6k points) materials; metals and non metals; class-8; 0 votes. Gas released in the following reaction will be: Reason- HNO3 is strong oxidizing agent & oxidized H2 to water. Temperature – warm acid solutions attack metals faster than cold solutions. 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. (CBSE 2011) Answer: Magnesium It oxidises the H 2 produced to water and itself gets reduced to any of the nitrogen oxides (N 2 O, NO, NO 2 ). Which gas is liberated when a metal reacts with an acid? Reaction of aluminium with dilute hydrochloric acid: Aluminium chloride and hydrogen gas are formed. Mg + 2HCl ⇨ MgCl 2 + H 2. Cold, dilute nitric acid reacts with copper to form _____ (hydrogen, nitrogen dioxide, nitric oxide). Surface area of the metal – powdered metals react faster than large lumps. Reaction with dilute Acids: Metal + Dilute Acid → Salt + H2. The metal X also reacts with sodium. Answer (c) sodium Sodium reacts violently with cold water because it is high in the reactivity series. For acids such as dilute hydrochloric acid and dilute sulfuric acid the general equation for their reaction with reactive metal is. Name a non-metal that conducts electricity. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Metal + HNO3 → H2 not evolved. 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. Mg: reacts with hot water. Video Explanation. Al, Fe, Zn react with steam to from metal hydroxide & H2. Question 27. CBSE Class 10 Science Lab Manual – Properties of Acids and Bases EXPERIMENT 2(a) Aim To study the properties of acids (dil. Sodium reacts violently with dilute mineral acids and displaces hydrogen from them. Reaction of magnesium metal with dilute hydrochloric acid: Magnesium chloride and hydrogen gas are formed when magnesium reacts with dilute hydrochloric acid. Dilute sulfuric acid the general equation for their reaction with dilute hydrochloric acid to produce hydrogen is... Reason- HNO3 is strong oxidizing agent & oxidized H2 to water – warm acid attack! Hydrogen gas are formed reacts with copper to form _____ ( hydrogen, nitrogen dioxide, nitric oxide.. 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