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Tiya
27 Feb 2016
Describe an experiment to show the conditions necessary for rusting of iron.
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Statement Name Wind Responsible Bringing Rain Explain Formation Wind Write Formulae Chlorides Eka Silicon Eka Aluminium Elements Predicted Mendel Ev List Damages Caused Cyclones Three Elements B C 3 4 2 Electrons Respectively Outermost Shell Give Group Number Belong Modern PeriElement X Placed Group 14 Formula Nature Bonding Chloride Compare Radii Two Species X Give Reasons Answer X 12 Protons 12 Electrons B 12 Protons 10 ElectronsArrange Following Elements Increasing Order Atomic Radii Li F N B Cl BrIdentify Name Metals Following Elements Whose Electronic Configurations Given 2 8 2 B 2 8 1 C 2 8 7 Write Formula Product Formed Element Atomic Number 19 Combines Element B Atomic Number 17 Draw ElectArrange Following Elements Increasing Order Metallic Character Mg Ca K Ge GaIdentify Elements Following Property Arrange Increasing Order Reactivity Element Soft Reactive MetalProperties Elements Given Would Locate Following Elements Periodic Table Soft Metal Stored Kerosene Element Placed 2nd Group 3rd Period Periodic Table Burns Presence Oxygen Form Basic Oxide Identify EElement X Atomic Number 17 Reacts Element Atomic Number 20 Form Divalent Halide Periodic Table ElemeAtomic Number Elements Given 10 20 7 14 Identify Elements B Identify Group Number Elements Periodic Following Form Ap Justify Answer 1 1 1 1 Ii 0 2 0 2 Iii 1 1 2 2 3 3 Iv 11 22 33 V 12 13 14 Vi 2 22 2Justify Whether True Say 1 32 2 52 Forms Ap A2 A1 A3 A2 Ap 3 7 11 Find Directly A30 A20 Without Actually Finding A30 A20 Give Reasons Answer Two Aps Common Difference First Term One Ap 2 7 Difference 10th Terms Difference 21st Terms Differen0 Term Ap 31 28 25 Justify Answer Taxi Fare Km Fare Rs 15 First Km Rs 8 Additional Km Form Ap Total Fare Rs Km 15 8 8 8 Statement TrueFollowing Situations Lists Numbers Involved Form Ap Give Reasons Answers Fee Charged Student Every MJustify Whether True Say Following Nth Terms Ap 2n 3 Ii 3n2 5 Iii 1 N N2Complete Following Cross Word Puzzle Figure 5 1 Across 1 Element Atomic 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Gold Dropped Solution Iron Sulphate Piece Get Coating Copper Iron B Silver C GoMetal Used Construction Industry Iron B Copper C Aluminium Tin Metals React Oxygen Form Acidic Oxides B Basic Oxides C Either Acidic Basic Oxide Depending Metal ReMetal Dipped Salt Metal B Displaces B Solution Shows Reactive B B B Reactive C B Equally Reactive CoMetals Displace Three Metals Salt Solutions Copper B Iron C Silver ZincNon Metals React Water Metals React Oxygen Produce Oxides Non Metals React Oxygen Produce Oxides Black Material Inside Pencil Name Soft Metal Metal Food Containers Coating Non Metal High Melting Boiling Points Sand Contains Non Metals Abundant Element Universe Whereas Abundant Element Earth Crust Rock Containing Metallic Mineral Called Ore True False Metal Higher Reactivity Series Sodium Silver Noble Metals Used Make Ornaments Alloy Alloys Generally Made Advantage Galvanized Iron Tin Plated Iron Mean Reactivity Series Metals Difference Physical State Metals Non Metals Room Temperature Name Metal Corrode Air Copper Corrodes Presence Water Galvanized Iron Starts Rusting Scratch Zinc Layer True False Presence Air Necessary Iron Rust Metal X Replace Another Metal Metal Salt X Reactivity Series State Whether Displacement Reaction Occur Following Mixed Give Reasons Give Reaction Copper SulphateList Three Uses Silicon List Three Important Uses Hydrogen Aluminium Protects Corrosion Discuss Necessary Anodize Aluminium Make Corrosion Resistant Give Important Uses Copper Give Three Examples Reactions Metals Water Show Different Metals Different Reactivities Mean Malleability Ductility Properties Different Metals Non Metals Anodizing Aluminium Carried Alloying Used Lower Melting Point Give Example Wire Drawn Wood Doctor Diagnosed Patient Iron Deficiency Gave Tablets Containing Iron Tablets Hard Look Like Iron ThEngineer Constructing Multi Storey Building Alloy Would Extensively Using Aluminium Iron Reactivity Series However Reactions Oxygen Water Seem Indicate Less Reactive Iron ExpNoticed Silverware Becomes Black Faster Today Fifty Years Ago Reason Suppose Copper High Reactivity Series Would Still Useful Metal Give Reasons Bells Made Metals Wood Silver Best Conductor Electricity Say Electric Wires Made Silver Give Names Composition Alloys Used Following Making Statues B Joining Wires Electronic Equipments C Discuss Briefly Different Methods Used Preventing Corrosion Metals Describe Experiment Show Conditions Necessary Rusting Iron Rock Found Small Amount Iron Geologists Thought Would Expensive Extract Iron Would Call Rock Ore IroElement Metal Finally Determined Whether Hard Shiny Agree Give Reasons Property Must Substance Possess Possible Make Thin Wires Material Metal Burnt Air Substance Formed Dissolved Water Tested Blue Red Litmus Paper Result Expect Metal M1 Reactive Metal M2 Metal Higher Reactivity Series Metal M3 Reacted Salt Metal M4 Products M4 Salt M3 However Metal M4 Reaction Salt M3 Say ReactivitiePainting Metal Prevents Corroding Aluminium Higher Iron Reactivity Series See True Ayesha Took Similar Sized Pieces Aluminium Iron Tes