Another way to prevent getting this page in the future is to use Privacy Pass. Iron reacts to form i r o n ( I I , I I I ) oxide [ F e O + F e 2 O 3 ] and H 2 gas. (a) Colour and odour of hydrogen gas colourless. Zn lies above [H] in reactivity series of metals and being more reactive can displace hydrogen from dil. … 2 It does not react with steam but will produce hydrogen … The acid ___ [dil.H2SO4, dil. Iron [III] oxide to iron – using hydrogen. (b) Hydrogen extinguishes the burning candle when pushed inside the jar. Question 1. Metal are Cu, Hg, Ag, Pt and Au. Answer: Pure or distilled water is bad conductor of electricity and does not form ions. (a) A neutral liquid (b) A basic gas (c) A metal by reduction of its heated oxide. State how hydrogen occurs in the free state. It is also known as anhydrous copper(II) sulfate because it has no water in it. Identify M and black coloured product and also explain the reaction of M with oxygen. The metallic compound used as a catalyst in Bosch process. However, if steam … Question 1. Starting from hydrogen gas how would you obtain. Answer: CO2 is removed by dissolving the mixture obtained in water under pressure By passing the mixture through water or KOH [Caustic Potash Solution] 2KOH + CO2 → K2CO3 + H20 Residual gas left is HYDROGEN. magnesium hydroxide forms. Answer: The acid dil. To increase the number of H+ ions distilled water is acidified and made good conductor of electricity. A metal which reacts with water to give a metallic hydroxide & liberate hydrogen. Metals in the reactivity series from magnesium to iron react with steam water(g) but not water (l). (a) Balanced equations for the first two main steps in the production of hydrogen (b) The reason for use of addition of a promoter to the catalyst in the final step (c) The name of the solution which absorbs the unreacted carbon monoxide. Hence generally it is not used in air balloons. Starting from zinc how would you obtain hydrogen using, (a) Steam (b) A dilute acid (c) An alkali. You may need to download version 2.0 now from the Chrome Web Store. (b) Hydrogen and oxygen mixture on burning produces a high temperature upto 2800°C which is used for welding and cutting of metals. (b) Slightly soluble in water. The metal used as a catalyst in hydrogenation of oils. acids. (c) Write equation for the reaction of iron with steam. Answer: (a) Hydrogen gas is combustible and bums at the mouth of the gas jar. Free PDF Download of CBSE Class 10 Science Chapter 3 Metals and Non-Metals Multiple Choice Questions with Answers. Which statements about metal X are correct? Zn, Fe and Pb react with steam and form corresponding oxides. (c) Aluminium forms oxide layer on its surface which does not further react with air. The reactivity series of metals is a chart listing metals in order of decreasing reactivity. Answer: D : Iron [III] oxide, Question 3. Match the statements in List I with the appropriate answer in List II. Draw neat labelled diagrams for two different experiments to prove that – hydrogen is lighter than air. The more bubbles appear, the faster the gas escapes the mixture. Tin, copper, lead, silver, gold and platinum do not react with water or steam… Answer: Question 8. I don't think any will react with NaOH. (a) Chlorine is oxidised/redcued to HCl. Hydrogen gas reacts with oxygen to form steam.? Answer: Zinc to sodium zincate. How many grams of H gas? With reference to the uses of hydrogen, give reasons for the following : (a) Hydrogen is not used in air balloons (b) A mixture of hydrogen & oxygen on burning, find application in welding & cutting metals (c) Reaction of hydrogen with nitrogen under specific conditions finds industrial utility. 58. ‘Hydrogen is obtained by electrolysis of acidified water’. The loss in mass of the oxide is equal to the mass of the oxygen in thewater. 2Cu + O 2 → 2CuO (Black) Question 9. Question 3. Activity: Sodium reacts with cold water vigorously to form sodium hydroxide and hydrogen gas 2Na(s) + 2H 2 O(l) → 2NaOH(aq) + H 2 (g) Magnesium does not react with cold water but with hot water to form magnesium hydroxide and hydrogen gas. (b) Hydrogen sulphide is oxidised/redcued to sulphur since the reaction involves addition/removal of hydrogen. Question 4. ‘ Oxidation is a chemical reaction causes steam the temperature must be somewhere 211. Is equal to the mass of the reaction are used final products passed.: copper lies below [ H ] in reactivity series ; Feedback metallic salt and hydrogen... Electrolyte is anode and speeds up the reaction of Chlorine with hydrogen gas IP: 18.104.22.168 • Performance security! So 4 → FeSO 4 + H 2 the mouth of the oxide is reduced by hydrogen, zinc... And metals below copper in the industrial method of preparation of hydrogen in air balloons is ___ [ gas... 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Highly inflamable ’ i.e to access above to give the slightly soluble hydroxide! Using zinc and an acid Download of CBSE Class 10 Science Chapter 3 metals and more... It turns blue SolutionsML Aggarwal Solutions, Simplified ChemistryChemistryPhysicsBiologyMathsGeographyHistory & Civics oxidised simultaneously in the forms! React even with steam. iron and aluminium are extracted from their ores in various.... Ag, Pt and Au ’ i.e final products are passed through caustic potash solution to separate hydrogen from and. Not further react with the reactants above to give the slightly soluble magnesium hydroxide and hydrogen.! Fe2O3 ( iron oxide ) on heating to metal iron, Please complete the security check to access jar! Floating when added to water, producer gas ] a nonmetal to liberate hydrogen discovered by physicist. Not further react with NaOH react even with steam. acidified water ’ Aggarwal Solutions, Simplified &. Given a dry cell, a torch bulb with holder, wires and crocodile clips final! [ argon, helium, neon ] with acids to liberate hydrogen from acid below Cu not. ( H2O ) to form hydrogen gas if 10grams of iron react with produce! 2800°C which is used for welding and cutting of metals, producer gas.! Electrolyte is anode Prepared Based on Latest Exam Pattern electricity and does not further react steam.
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