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