logo
we're on twitterabout
member? loginjoin us!
home
app
help
profile
preparing for upcoming exams? we've got you covered
registration for
geniusjnr olympiads
is now open
be the best - among the bests
register now  
Search
Iresh
27 Feb 2020

Which of the following chemical equations correctly represents the reaction of iron with water?

3 Fe(s) + 4 H2O(g) → Fe3O4(s) + 4 H2(g)

3 Fe(g) + 4 H2O(l) → Fe3O4(s) + 4 H2(g)

Fe3O4(s) + 4 H2(g) →3 Fe(g) + 4 H2O(l)

Fe3O4(s) + 4 H2(g) →3 Fe(s) + 4 H2O(g)

or
similar questions
Show Zinc Active Metal Copper Correct Procedure 1 Add Dilute Nitric Acid Strips Metals 2 Observe TraWrite Standard Form Cubic Polynomial Real Coefficients Parachutist Descending Vertically Makes Angles Elevation 45 60 Two Observing Points 100 Apart Left S2 1 Centroid Triangle Vertices X 0 5 2 8 X Satisfy Relation 3x 8y 0 B 3x 8y 0 C 8x 3y 0 8x 3yCentroid Triangle Formed Points 3 5 7 4 10 K Point K 1 K 3 B 1 C 2 4Use Following Information Answer Next Question Metals React Oxygen Produce Metal Oxides However MetaUse Following Information Answer Next Question Metals React Water Produce Gas Information AlternativPoints P X Equidistant 5 1 B 1 5 5x B X 5y C 3x 2y 2x 3yPoints X 4 Lies Circle Whose Centre Origin Radius 5 X 5 B 3 C 0 4P Point X Axis Distance Origin 3 Units Coordinates Point Q Oy Op Oq 0 3 B 3 0 C 0 0 0 3 Following Chemical Equations Correctly Represents Reaction Iron Water Ratio 4 5 Divides Join 2 3 7 8 2 3 B 3 2 C 3 2 2 3Centroid Triangle 1 4 Two Vertices 4 3 9 7 Area Triangle 183 Sq Units B 1832 Sq Units C 366 Sq UnitsFollowing Equations Represents Single Displacement Reaction Use Following Information Answer Next Question General Chemical Equation Displacement Reaction WrittX 1x 5 Find Value X3 1x3Use Following Information Answer Next Question Megan Wants Replace Handle Frying Pan Using Goes MarkB 10 Ab 21 Find Value A3 B3Use Following Information Answer Next Question Nicole Breaks Clinical Thermometer Finds Bulb ThermomGiven Figure Z Terms X X 180 B X 180 C 180 X X 360 Given Figure Ab Bc X 18 B 22 C 25 32Measures Angles Triangle Ratio 3 4 5 Measure Smallest Angle Triangle 25 B 30 C 45 60 Following Materials Malleable Given Figure Ec Ab Ecd 70 Bdo 20 Obd 20 B 50 C 60 70 Use Following Information Answer Next Question Aluminium Foils Used Wrapping Food Items Following PrAbc 50 Bc Produced Point Bisectors Abc Acd Meet E E 25 B 50 C 100 75 Bisects Exterior Angle B C Abc Meet X Boc 90 X 2 B 90 X 2 C 180 X 2 180 X 2Line Segments Ab Cd Intersect Ac Db Cab 45 Cdb 55 Bod 100 B 80 C 90 135 Bisectors Acute Angles Right Triangle Meet Angle Two Bisectors 45 B 95 C 135 90 Abc 60 B 80 Bisectors B C Meet Boc 60 B 120 C 150 30 Exterior Angle Triangle 108 Interior Opposite Angles Ratio 4 5 Angles Triangle 48 60 72 B 50 60 70 CAbc 100 Ad Bisects Ad Bc B 50 B 90 C 40 100 Sides Triangle Produced Order Sum Three Exterior Angles Formed 90 B 180 C 270 360 Triangle Exterior Angle Vertex 95 One Interior Opposite Angle 55 Measure Interior Angle 55 B 85 C 40Production Oil Lakh Tonnes Refineries India 1982 Given Refinery Barauni Koyali Mathura Mumbai FloridNumber Times Particular Item Occurs Given Data Called Variation B Frequency C Cumulative Frequency CDifference Upper Lower Class Limits Called Mid Points B Class Size C Frequency MeanFollowing Ages 360 Patients Getting Medical Treatment Hospital Day Age Years 10 20 20 30 30 40 40 50Daily Maximum Temperatures Degree Celsius Recorded Certain City Month November Follows 25 8 24 5 25 Use Following Information Answer Next Question Oxide Acidic Basic Information Alternative Completes Following Substances React Water Use Following Information Answer Next Question Metal X Undergoes Following Reaction Salt Solution MeUse Following Information Answer Next Question Put Dilute Hydrochloric Acid Metal X Reacts Produce HUse Following Information Answer Next Question Megan Wants Replace Handle Frying Pan Using Goes MarkOutsourcing Represent New Mode Business Business Considered Economic Activity Partnership Considered Relatively Unpopular Form Business Ownership Explain Merits Limitations PartnFollowing Alone Ensure Effective Ethics Programme Business Enterprise Publication Code B InvolvementBuild Argument Social Responsibilities Difference Gdr Adr Explain Commercial Paper Advantages Limitations Meant Term Promotion Discuss Legal Position Promoters Respect Company Promoted Purpose Served Wholesalers Providing Warehousing Facilities Use Following Information Answer Next Question Metals Good Thermal Conductors Metal Heated Atoms GaiSingle Displacement Reaction Among Following ReactionsUse Following Information Answer Next Question Jonathan Constructs Setup Shown Figure Time Drawing PBarium Nitrate Ba No3 2 Mixed Sodium Fluoride Naf Aqueous Solution Following Compounds Obtained Use Following Information Answer Next Questions Displacement Reactions Involve Replacement Atom GrouUse Following Information Answer Next Question Given Equation Represents Reaction Sodium Metal WaterUse Following Information Answer Next Question Little Amount Carbon Phosphorus Potassium Sulphur BurFollowing Properties Chemical Property Metals Excessive Irrigation Lead Soil Salinity Roughage Differ Concentrates Reference Cattle Feed Write Differences Nucleus Nucleoid Write Names Cell Organelles Draw Well Labelled Diagram Parenchyma Collenchyma Name Different Types Elements Found Xylem Help Flow Chart Depict Five Kingdoms Classification Write Four General Characters Porifera Give Two Examples Define Diarrhoea Give Account Occurrence Symptoms Prevention Control Ailment Solid Density 900 Kg M3 Floats Oil Shown Given Diagram Oil Floats Water Density 1000 Kg M3 Shown DenRectangle Wooden Block Length Breadth Height 50 Cm 25 Cm 10 Cm Respectively Wooden Block Kept GroundFill Following Blanks Suitable Words Work Measured Product B Work Done Body Moving Circular Path C 1Kind Energy Possessed Following Stone Kept Roof Top B Running Car C Water Stored Reservoir Dam ComprWork Done Force Moving Object Distance 20 Cm 24 2 J Magnitude Force Simplify 534 4512 316Find Difference 7 523Zinc Reacts Dilute Hydrochloric Acid Use Following Information Answer Next Question Marks 1 Happen Given Granules Test Tube Subtract 27 86 53 74Three Days Week Rickshaw Puller Earns Rs 32 60 Rs 56 80 Rs 72 Respectively Total Earning Days Convert Following Mixed Fraction 3 108Following Changes Occurs Metals React Nitric Acid Use Following Information Answer Next Question G Given Figure RepresentsDilute Hydrochloric Acid Added Iron Filings Use Following Information Answer Next Question Four Metal Rods Made Lead Zinc Gold Silver Equal ThicUse Following Information Answer Next Question Given Table Lists Various Types Oxides Along ExamplesUse Following Information Answer Next Question Three Test Tubes Taken Labeled X Z Test Tubes Amount Use Following Information Answer Next Question Given Activity Following Compounds Cannot X Element X Reacts Oxygen Forming X2o Dissolves Water Give Compound Compound Turns Red Litmus Blue ReaMagnesium Reacts Water Form Type Oxide Use Following Information Answer Next Question Zinc Displaces Copper Iron Salt Solutions Iron Also DUse Following Information Answer Next Question Potassium Hydroxide Reacts Sulphuric Acid Produce PotFollowing Materials Dull Appearance Following Materials Malleable Following Properties General Property Metals Use Following Information Answer Next Question Aluminium Foils Used Wrapping Food Items Following PrFollowing Materials Beaten Thin Sheets Use Following Information Answer Next Question Materials Classified Metals Non Metals Basis DifferenFollowing Metals Cannot Displace Copper Copper Sulphate Solution Alternative Metal Paired Non Metal Use Following Information Answer Next Question Iron Rod Kept Vessel Contains Boiling Water Shown GivInformation Inwhich Alternative Incorrectly Matched Use Following Information Answer Next Question Aluminium Foils Used Wrapping Food Items Following PrFollowing Statements Incorrect Following Materials Malleable Use Following Information Answer Next Question Piece Charcoal Heated Certain Gas Evolved Evolved GasUse Following Information Answer Next Question Ranja Carried Reactions Chemistry Lab Noted FollowingFollowing Metals Neither Malleable Ductile Following Statements Correct Following Statements Cannot Attributed Non Metals Following Statements Correct Following Compounds Produced Highest Amounts Metal Exposed Air Following Metals React Dilute Hydrochloric Acid Heating Use Following Information Answer Next Question Assignment Rajesh Find Nature Substance Used Make ThiUse Following Information Answer Next Question Element Use Nitrogen 1 Used Fertilisers Ii Aluminium Following Reactions Represents Double Displacement Reaction Following Substances Malleable Copper Sulphur Answer Following Questions Write Reaction Magnesium Oxygen Sulphuric Acid B Explain Nature Product FOxide Acidic Nature Sulphur Oxide Copper Oxide Differentiate Metals Non Metals B Ores Draw Flowchart Showing Processes Involved Extraction VariousAqueous Solution Lead Ii Nitrate Reacts Aqueous Solution Ferric Sulphate Form Aqueous Solution FerriName Metal Liquid Room Temperature Little Amount Iron Fillings Added Solution Aluminium Sulphate Predict Whether Reaction Take Place GiPotassium Kept Immersed Kerosene Oil Potassium Reacts Water Produce Gas Also Produced Sulphuric AcidAmphoteric Oxides Give Example Following Beaten Thin Sheets Pencil Lead Silver Aluminium CoalGas Evolved Metals React Acids Metals Soft Yes Name Given Figure Show Happen Copper Vessel Exposed Moist Air Choose Correct Statements Metals React Vigorously Air Water Stored Kerosene Ii Non Metals React WateState Whether True False Non Metals Beaten Thin Sheets Ii Touch Hot Metallic Part Pan Get Hurt Iii AFill Blanks Zinc Replaces Copper Copper Sulphate Solution Reaction Type Reactions Reactive Metal DisMatch Following Non Metals Trains Cars Metals Crackers Fertilisers Mercury Wrapping Food Aluminium TWrite Three Differences Metals Non Metals State Whether True False Air Insulator Ii Wood Insulator Iii Vinegar Poor Conductor Iv Aluminium GooBags Containing Food Items Flushed Nitrogen Gas Balance Following Chemical Equations B C E Label Following Reactions According Types Explain Answers B C E Mercury Different Metals List Four Differences Physical Properties Metals Non Metals Metals Good Conductors Electricity Name Products Formed Sodium Hydrogen Carbonate Heated Ii Write Chemical Equation Reaction Involved Observed Solution Potassium Iodide Added Solution Lead Nitrate Taken Test Tube Ii Type Reaction Iii Observed Solution Potassium Iodide Added Solution Lead Nitrate Taken Test Tube Ii Type Reaction Iii Observed Solution Potassium Iodide Added Solution Lead Nitrate Taken Test Tube Ii Type Reaction Iii Colour Ferrous Sulphate Crystals Colour Change Heating B Name Products Formed Strongly Heating FerrExplain Examples Causes Inequality India People Fight Elections Without Support Political Parties Called Explain Formation Different Types Rocks Give Examples Majority PartyDiagram Solar System Harmful Effects Believing Stereotypes Governor Enjoys Special Powers Powers Explain Write Opinion Gender Stereotypes Hydrosphere Comprised Continent Equator Tropic Cancer Tropic Capricorn Passing Weekly Markets Offer Would Find Mall Fulfil Duty Towards Providing Education Municipal Corporation Runs Several Schools 11 Cos 3x Dx Cos2 Nx Dx 01tan 1 X1 X2 Dx 02 Ex Cos 4 X2 Dx 0 2a2 Cos2 X B2 Sin2 X DxArea Bounded Parabola Y2 4ax Latusrectum X Axis 0 B 43a2 C 23a2 A23Area Enclosed Curves Loge X E X Loge 1y X Axis 2 B 1 C 4 NoneFind Area Region First Quadrant Enclosed X Axis Line X Circle X2 Y2 32 Food Items Curd Juices Citrus Fruits Stored Metallic Containers Rahul Added Piece Calcium Water Observed Started Floating Reason Give Experiment Show Hydrogen Gas Produced Metals React Acid Use Following Information Answer Next Question Certain Metal Vigorously Reacts Oxygen Room TemperatuLittle Amount Iron Fillings Added Solution Aluminium Sulphate Predict Whether Reaction Take Place GiPotassium Kept Immersed Kerosene Oil Potassium Reacts Water Produce Gas Also Produced Sulphuric AcidThree Elements X Z Atomic Numbers 12 16 20 Respectively Element Highest Number Valence Electrons B TUse Following Information Answer Next Question Put Dilute Hydrochloric Acid Metal X Reacts Produce HFollowing Metals React Hydrochloric Acid Magnesium Ribbon Cleaned Burning Air Give Experiment Show Hydrogen Gas Produced Metals React Acid Name Metal Non Metal Liquid Room Temperature Sour Substances Kept Copper Brass Vessels Understand Precipitation Reaction Give One Example Name Following Metal Used Long Distance Cable Wires Ii Metal Added Gold Harden Iii Metal Forms Two TMatch Following Non Metals Trains Cars Metals Crackers Fertilisers Mercury Wrapping Food Aluminium TStudent Takes Zinc Granules Test Tube Adds Dilute Hydrochloric Acid Would Observe Colour Zinc GranulState Whether True False Non Metals Beaten Thin Sheets Ii Touch Hot Metallic Part Pan Get Hurt Iii AAnswer Following Questions Super Cooled Liquid Ii Write Name Alloy Used Making Coins B Constructing Following Beaten Thin Sheets Pencil Lead Silver Aluminium CoalDifferentiate Metals Non Metals Metals Soft Yes Name Label Following Reactions According Types Explain Answers B C E Write Three Differences Metals Non Metals Name Two Metals Ductile Well Malleable Magnesium Powder React Much Rapidly Magnesium Ribbon Dilute Sulphuric Acid Consider Figures Given Two Cases Bulb Glow Happen Copper Vessel Exposed Moist Air Gas Evolved Metals React Acids Give Reasons Following Metals Regarded Electro Positive Elements Ii Piece Copper Metal Added SolutioMetals Good Conductors Electricity Food Items Curd Juices Citrus Fruits Stored Metallic Containers Choose Correct Statements Metals React Vigorously Air Water Stored Kerosene Ii Non Metals React WateName Two Metals React Violently Cold Water Write Three Observations Would Make Metal Dropped Water WMercury Different Metals Give Reasons Following Copper Used Making Electric Transmission Wire Ii Potassium Iodide Reacts LeadFollowing Substances Malleable Copper Sulphur Zno Called Amphoteric Oxide Name Another Amphoteric Oxide B Alkalies Give One Example Alkalies List Contains Metals Alloys 1 2 3 4 5 List Ii Contains Uses B C E List Metal Alloy List Ii Uses AlumIdentify Type Reaction X Yz Xy Z B X ZTest Tubes Reaction Take Place Write Balanced Chemical Equations Reactions Colour Name Precipitate Formed Write Balanced Chemical Equation Reaction Given Chemical Reaction Example Type Reaction Sea Water Added Solution Silver Nitrate White Precipitate Formed Explain Rohan Studied Displacement Reactions Class Elder Brother Told Performing Experiment Chemistry LaboraExample Neutralisation Reaction Name Given Reaction White Precipitate Formed Barium Chloride Solution Reacts Sodium Sulphate Solution Name Write ChemicaRoom Temperature Metals Occur Solid State Comment Statement Given Metals Melt Held Palm Time Aluminium Tin Lead Gallium ZincDuctilityConductivityPiece Iron Beaten Thin Sheets Whereas Graphite Cannot Complete Given Table Basis Effect Hammering Given Substances Material Change Shape Iron Nail Piece CCopper Vessel Acquire Green Coating Exposed Moist Air Zinc Plate Dipped Copper Sulphate Solution Sometime Reddish Brown Mass Deposited Zinc Plate State ReMagnesium Behave Steam Passed Explain Giving Chemical Equations Metals Used Making Machinery Chemical Nature Evolved Gas Found Provided Dry Cell Bulb Holder Wires Using Objects Distinguish Piece Coal Graphite Essential Life Required Living Beings Breathing Makes 78 Earth Atmosphere Used Manufacturing Fertilizers Used Process Water Purification Recommended Acids Stored Metal Containers Element Reacts Oxygen Form Oxide Dissolves Dilute Hydrochloric Acid Resulting Solution Turns Colour Element X Brittle Also Forms Acidic Oxide Given Elements X Represent Magnesium Copper Sodium SulphurMetals Lose Shine Exposed Air Long Time Classify Given Elements Basis Nature Oxides Formed Graphite Sodium Magnesium SiliconNon Metal Lustrous Metal Exists Liquid State Slo 1 8 2 1 4 1 1 Property Aluminium Explains Use Making Foils Name Two Metals Easily Cut Help Knife Solution Obtained Given Figures Turn Colour Blue Litmus Solution Red Handle Screw Driver Made Reason Given Objects Must Inserted Circuit Ensure Bulb Glows Phosphorus Stored Water Electric Wires Made Copper Aluminium Name Non Metal Good Conductor Electricity Given Elements Would Yield Basic Oxide P Ca SiHappens Iron Nail Dipped Copper Sulphate Solution Consider Figure Given X Made Rubber Aluminium Two Beakers Contain Colourless Solutions Magnesium Oxide Carbon Dioxide Solutions Beakers IdentifiedMetals Used Making Cooking Utensils Following Reactions Cannot Take Place Give Reasons Justify Answer Iron Zinc Sulphate Iron Sulphate ZElement X Ductile Forms Basic Oxide Given Elements X Represent Carbon Magnesium Sulphur SiliconMalleability Complete Given Table Using Available Data Metal Used Reaction Hydrochloric Acid Zinc Magnesium CoppeGive Suitable Reasons Answers Aluminium Vessels Lose Shine Time Happens Iron Articles Exposed Moist Air Metal Liquid Room Temperature Mark Correct Alternative Following Added 5 09 Get 5 5 0 41 B 0 59 C 0 49 0 95Use Following Information Answer Next Question Property Substances Virtue Beaten Thin Sheets Called Mark Correct Alternative Following 0 012 0 15 0 8 B 0 08 C 0 008 0 0018Mark Correct Alternative Following 0 3 0 3 0 3 2 7 B 0 27 C 0 027 NoneMark Correct Alternative Following 5 Kg 5 G Written Decimal Notation 5 5 Kg B 5 05 Kg C 5 005 Kg 5 0Mark Correct Alternative Following 0 012 1 5 0 8 B 0 08 C 0 008 NoneWrite Expression Following Statements Using Brackets Four Multiplied Sum 13 7 Ii Eight Multiplied DiSimplify Following 7 109Following Oxides Acidic Nature Simplify Following 9 105Simplify Following 17 109Simplify Following 16 108Following Substances React Sulphuric Acid Mark Correct Alternative Following 102119 Standard Form 67 B 67 C 617 NoneMark Correct Alternative Following Rational Number Equal 23 1025 B 10 15 C 96 NoneMark Correct Alternative Following Additive Identity Element Set Whole Numbers 0 B 1 C 1 NoneMark Correct Alternative Following Following Zero 0 0 B 03 C 7 73 9 0Mark Correct Alternative Following 38 X 24 Equivalent Rational Numbers X 3 B 6 C 9 12Mark Correct Alternative Following 27 45 Expressed Rational Number Denominator 5 Numerator 3 B 3 C 6Following Metals Found Human Blood Point 0 2 Equidistant Points B 3 P C P 5 Find P Cbse 2014 Abcd Rectangle Whose Three Vertices B 4 0 C 4 3 0 3 Find Length One Diagonal Cbse 2014 Point P K 1 2 Equidistant Points 3 K B K 5 Find Values K Cbse 2014 Find Ratio Point P X 2 Divides Join 12 5 B 4 3 Cbse 2014 Prove Diagonals Rectangle Abcd Vertices 2 1 B 5 1 C 5 6 2 6 Equal Bisect Cbse 2014 Find Lengths Medians Ad Abc Whose Vertices 7 3 B 5 3 C 3 1 Cbse 2014 Find Area Circle Whose Circumference 8 Cbse 2014 Find Perimeter Semicircular Protractor Whose Diameter 14 Cm Cbse 2009 Following Substances Poor Conductor Heat Electricity Radii Two Circles 19 Cm 9 Cm Find Radius Circle Circumference Equal Sum Circumferences Two Circles Radii Two Circles 8 Cm 6 Cm Find Radius Circle Area Equal Sum Areas Two Circles Following Non Metallic Substances Highest Melting Point Copper Reacts Concentrated Nitric Acid Produce Acidic Oxides Following Options Represents Correct SeCircumferences Two Circles Ratio 2 3 Ratio Areas Calcium Violently Reacts Water ProduceSquare Inscribed Circle Find Ratio Areas Circle Square Circumference Circle 8 Cm Find Area Sector Whose Central Angle 72 Two Circular Pieces Equal Radii Maximum Area Touching Cut Rectangular Cardboard Dimensions 14 Cm 7 CRectangular Sheet Paper Abcd Ab 40 Cm Ad 28 Cm Semicircular Portion Bc Diameter Cut Find Area RemainGiven Figure Oabc Square Side 7 Cm Copb Quadrant Circle Centre C Find Area Shaded Region Median 10 12 X 6 18 10 Following Correct 6 X 10 B X 6 C X 18 Either B Use Following Information Answer Next Question Shweta Two Objects E X One Metal Non Metal Beats X HaUse Following Information Answer Next Question Preeti Two Similar Looking Objects E X Produces RingiTwo Elements Exist Liquid State Mercury Bromine Order Find Metallic Character Shashank Connects CircUse Following Information Answer Next Question Substance Reacting Sodium Hydroxide Forms Complex SubUse Following Information Answer Next Question Iron Nails Added Two Beakers X Contain Aqueous SolutiRajesh Two Different Substances X Test Tube Adds 5 Ml Sulphuric Acid Test Tubes Observes Gas Evolves10 Cards Numbered 1 10 Card Drawn Randomly Probability Getting Even Numbered Card 110 B 15 C 12 25Dice Rolled Probability Getting Even Prime 16 B 13 C 12 56100 Cards Numbered 1 100 Box Card Drawn Box Probability Event 12 Number Favourable Cases Event 20 B Remplissez Les Blancs Use Following Information Answer Next Question Assignment Rajesh Find Nature Substance Used Make Thi Use Following Information Answer Next Question Four Metal Rods Made Lead Zinc Gold Silver Equal Thic Following Elements Used Making School Bells Use Following Information Answer Next Question Ankur Cooking Rice Pan Using Hot Plate Accidently Tou 12 Element Use Nitrogen Used Fertilisers Ii Aluminium B Used Machinery Iii Iron C Used Electrical Wires Name Given Reactions Write General Equation Reaction Solid Right Circular Cone Height 120 Cm Radius 60 Cm Placed Right Circular Cylinder Full Water HeighObserved Dil Hcl Reacts Magnesium Ii CopperLustrous Non MetalLow Density MetalHardest Non MetalPoint Distance 13 Cm Centre Circle Radius 5 Cm Ap Aq Tangents Circle P Q Tangent Bc Drawn Point R LyTwo Wires Equal Lengths One Copper Another Brass Thickness One Used Electrical Transmission Lines IiCopper Aluminium Lead Taken Three Different Test Tubes Concentrated Hno3 Hcl H2o Added Respectively Consider Figures Given Two Cases Bulb Glow Following Elements Lowest Melting Point Aluminium Gallium Copper GoldNeha Burnt Coal Excess Oxygen Allowed Gas Formed Process Pass Blue Litmus Solution Observe Change Rahul Wants Make Electrical Circuit Would Prefer Bronze Copper Steel Alloy Iron Carbon Would Effect Ductility Steel Level Carbon Increased Complete Given Figure Rajni Carried Reactions Chemistry Lab Element Reaction Warm Hcl Reaction H2so4 Magnesium Yes Yes CopMetal Used Making Foils Used Decoration SweetsMetal Whose Foils Used Wrapping FoodAbundant Metal Earth CrustMixture Iron Sulphur Formed Thoroughly Grinding 7 G Iron Filings 4 G Sulphur Happen Small Amount GivFill Blanks Property Substances Virtue Beaten Thin Sheets Called Characteristic Property React AcidsName Described Acid Name One Acid Causes Acid Rains Identical Blocks Iron Plastic Wood Rubber Placed Sun Interval Time Given Blocks Become Hottest GivenIdentify Type Reactions Following Reactions Belong 2 Naoh H2so4 Na2so4 2h2o B Mg H2o Mgo H2Iron Found Human Blood Non Metals Used Making Crackers Graphite Used Manufacture Pencil Argon Usually Used Fill Weather Balloons Hydrochloric Acid Added Small Amount Substance Test Tube Pop Sound Observed Bringing Burning MatchstMatch Following Column Column B Acidic Oxide Sodium Water Basic Oxide Iron Water Slow Reaction SulphSilver Nitrate Added CopperAluminium Foil Added Hydrochloric AcidShweta Two Objects X One Metal Whereas Non Metal Beats X Hammer Finds Changes Thin Sheet Beats HammeMercury Liquid Metal Liquid Non MetalNon Metal Hammer Powdery Mass Metal Hammer Magnesium Found Plants Sulphur Used Water Purification Process Name Metal Malleable Ductile Fe Cuso4 Feso4 Cu Kind Reaction Given Equation Represent 20 Cylindrical Pillars Building Diameter 50 Cm Height 4 Find Cost Cleaning 14 Per M2 Copper Vessel Exposed Moist Air Acquires Green Coloured Coating Composition Green Coating Corrosion Iron Called Generally Oxides Metals Nature Name Two Metals Hard Strong Curved Surface Area Right Circular Cylinder 4 4 M2 Radius Base 0 7 Find Height Ii Volume Silver Used Making Mirrors Sulphur Heated Presence Air Product Obtained Mixed Water Concluded Acidic Basic Nature Solution ObtaName Compound Produced Magnesium Burnt Air Write Three Differences Metals Non Metals Lateral Surface Area Cylinder 94 2 Cm2 Height 5 Cm Find Radius Base Ii Volume Take 3 14 Write Activity Show Metals Non Metals React Sodium Hydroxide Iron Nails Added Two Beakers X Contain Aqueous Solutions Copper Sulphate Zinc Sulphate Respectively Rajesh Two Different Substances X Test Tube Adds 5 Ml Sulphuric Acid Test Tubes Observes Hydrogen GaSketch Graphs Following Functions F X Tan 2xTwo Solutions Equation Tan X B Sec X C Find Values Sin Cos Calcium Reacts Hydrochloric Acid ProduceProducts Obtained Potassium Sulphate Reacts Barium Iodide Aqueous Medium Use Following Information Answer Next Question Metals Arranged Decreasing Order Reactivities Given MExample Double Displacement ReactionUse Following Information Answer Next Question Copper Turnings Added Clear Solution Silver Nitrate GUse Following Information Answer Next Question Raju Made Electric Circuit Test Electrical ConductiviFind Least Number Divided 20 25 35 40 Leaves Remainders 14 19 29 34 Respectively Distinguish Terms Overloading Short Circuiting Used Domestic Circuits B Coils Electric Toasters MadDefine Hormones Name Hormone Secreted Thyroid Write Function Use Iodised Salt Advised Us Three Pieces Timber 42 49 63 Long Divided Planks Length Greatest Possible Length Plank Many Planks F State One Difference Pollination Fertilization B Man Blood Group Marries Woman Blood Group Daughter Carbon Form Compounds Mainly Covalent Bonding B List Two Reasons Carbon Forming Large Number CompouInformation Inwhich Alternative Incorrectly Matched Homologous Series Compounds List Two Characteristics Homologous Series B Would Observed Adding 5 Al Meant Saying Potential Difference Two Points 1 Volt Name Device Helps Measure Potential Difference Differentiate Animal Plant Fibres Give Two Examples Expansion Solids Equal Size Temperature Increased Amount Agree Give Reasons Temperature Scale Used Scientific Work State Whether Following Statements True False Justify Answer Point P 4 2 Lies Line Segment Joining PState Whether Following Statements True False Justify Answer Points 0 5 0 9 3 6 Collinear Find Coordinates Point Q X Axis Lies Perpendicular Bisector Line Segment Joining Points 5 2 B 4 2 NaUse Following Information Answer Next Question Soft Metal Cut Knife Metal Liquid Room Temperature InTranspiration Important Plants Use Following Information Answer Next Question Metals Atoms Linked One Another Metallic Bond WhereasFollowing Metalsis Neither Malleable Ductile Light MetalsCompound Reacts Water Form Sulphurous Acid H2so3Since Sodium Highly Flammable Corrosive Metal StoredNitrogen Oxides Present Atmosphere React Water Form Acid Acid Along Precipitation Falls Earth Acid RUse Following Information Answer Next Question Sulphur Non Metal Belonging Group Vi Periodic Table SUse Following Information Answer Next Question Metals React Oxygen Form Oxides Superoxides Readily DUse Following Information Answer Next Question Non Metals React Oxygen Form Corresponding Oxides OxiMegan Wants Replace Handle Frying Pan Using Goes Market Offered Choice Several Materials Following MElement Used Treatment Anaemia Chlorophyll Green Coloured Pigment Present Plants Element Contain Use Following Information Answer Next Question Chemical Identification Experiment Susan Choose Pure Consider Following String Mysubject Mysubject Computer Science Output Following String Operations PrConsider Following String Myaddress Myaddress Wz 1 New Ganga Nagar New Delhi Output Following StringUse Following Information Answer Next Question Nicole Breaks Clinical Thermometer Finds Bulb ThermomFollowing Metals Neither Malleable Ductile Following Properties Cannot Attributed Metals Use Following Information Answer Next Question Iron Rod Kept Vessel Contains Boiling Water Shown GivFollowing Statements Cannot Attributed Non Metals Use Following Information Answer Next Three Questions Mixture Iron Sulfur Formed Thoroughly GrindingConsider Following List Mylist Elements Mylist Following Two Operations Mylist 10 20 30 40 Mylist ApUse Following Information Answer Next Question Wood Plastic Glass Bad Conductors Electricity WhereasOutput Following Code Segment Mylist 1 2 3 4 5 6 7 8 9 10 Del Mylist 3 Print Mylist Mylist 1 2 3 4 5Differentiate Functions List Append Extend Use Following Information Answer Next Question Way Object Shines Light Falls Known Luster Visual ProRecord Student Name Roll Marks Five Subjects Percentage Marks Stored Following List Strecord Raman 3Following Materials Conduct Heat Use Following Information Answer Next Question Anthony Heats Four Metallic Containers Filled Water AFollowing Materials Conduct Heat Following Tables Correctly Lists Various Materials Good Bad Conductors Heat Use Following Information Answer Next Question Rod Heated One End Temperature End Measured Observed Use Following Information Answer Next Question Screw Rubber Tube Wooden Stick Silver Ring Shown GiveFollowing Objects Good Conductor Heat Use Following Information Answer Next Question Given Table Classifies Various Objects Good Bad ConduUse Following Information Answer Next Question Certain Metal Reddish Brown Color Good Conductor HeatUse Following Information Answer Next Question Reactions Two Different Atoms Groups Atoms InterchangUse Following Information Answer Next Question Silver Nitrate Combines Sodium Chloride Form Silver CUse Following Information Answer Next Question Sodium Hydroxide Reacts Carbonic Acid Form Sodium BicUse Following Information Answer Next Question Single Displacement Reactions Reactions Element Gets Use Following Information Answer Next Question Chemistry Practical Class Students Assigned Task ChecFollowing Processes Involved Double Displacement Reaction Following Equations Example Single Displacement Reaction Following Displacement Reactions Possible Barium Nitrate Ba No3 2 Mixed Sodium Fluoride Naf Aqueous Solution Following Compounds Obtained Use Following Information Answer Next Question Displacement Reactions Involve Replacement Atom GroupUse Following Information Answer Next Question Double Displacement Reaction Two Different Atoms GrouSingle Displacement Reaction Among Following ReactionsFormed One Molecule Potassium Chloride Reacts One Molecule Silver Nitrate Balanced Equation Reaction Iron Oxide Fe2o3 Sulphuric Acid H2so4Use Following Information Answer Next Question Displacement Reaction Reactive Element Takes Place LeAluminium Good Conductor ElectricityUse Following Information Answer Next Question Basic Oxides React Water Form Bases Covalent Acidic OUse Following Information Answer Next Question Little Amount Carbon Phosphorus Potassium Sulphur BurMagnesium Reacts Steam Boiling Water Steam Present Excess Products ObtainedUse Following Information Answer Next Question Metals Elements Tendency Lose Electrons Following EleFollowing Elements Beaten Hammer Breaks Small Pieces Following Elements Lustrous Shiny Surface Following Elements Sonorous Nature Use Following Information Answer Next Question Fish Shellfish Natural Tendency Accumulate Toxic ElemFollowing Properties Attributed Metals Use Following Information Answer Next Question Professor Demonstrating Reaction Zinc Dilute SulfuricUse Following Information Answer Next Question Take Account Given Statements Lab Manual Ii Iii SolutFollowing Statements Metals False Following Elements Metallic Nature Following Elements Non Metallic Nature Use Following Information Answer Next Question Metals Good Thermal Conductors Metal Heated Atoms GaiFollowing Metals Poorest Conductor Heat Use Following Information Answer Next Question Jonathan Constructs Setup Shown Figure Time Drawing PUse Following Information Answer Next Two Questions Agatha Teacher Gave Plate Made Unknown Material Cu Al Used Make Electrical WiresAl Used Manufacture Cooking Utensils BoilersMetal Foil Generally Used Purpose Packing Medicine Tablets Aluminium Reacts Copper Sulphate ProduceZinc Reacts Ferrous Sulphate ProduceFollowing Statements Correct Following Statements Correct AlloyOne Following Substances Alloy Following Alloys Formed Combination Metal Non Metal Following Alloys Use Copper Constituent Use Following Information Answer Question Alloy Article Steel N Electrum Ii Brass Iii P Bronze IvFollowing Alloys Used Make Magnets Following Elements Added Steel Make Corrosion Resistant Stainless Steel AlloyComposition Copper Matte 1 Solutions Copper Sulphate Iron Sulphate Zinc Sulphate Prepared Marked Ii Iii Respectively Pieces AluStudent Prepared Aqueous Solution Cuso4 Beaker X Aqueous Solution Feso4 Beaker Dropped Iron Pieces BStudent Prepared Aqueous Solution Cuso4 Beaker X Aqueous Solution Feso4 Beaker Dropped Iron Pieces BRole Graphite Electrometallurgy Aluminium Role Graphite Electrometallurgy Aluminium Role Graphite Electrometallurgy Aluminium Role Zinc Metal Extraction Silver State Chemical Reaction Barium Chloride Aqueous Sodium Sulphate Aqueous Bacl2 Aq Na2so4 Aq Baso4 WhiGold Precious Metal Pure Gold Soft Therefore Suitable Making Jewellery Alloyed Either Silver Copper Happens Silver Nitrate Solution Added Copper B Aluminium Foil Added Hydrochloric Acid Explain Limita Element Reacts Oxygen Form Oxide Dissolves Dilute Hydrochloric Acid Resulting Solution Turns ColourFollowing Compositions Correct Composition Thermite Following Mixtures Used Ignition Mixture Thermite Welding Following Compositions Correct Composition Stainless Steel Following Metals Constituent Duralumin Alloy X Obtained Mixing Zinc 40 30 Copper 60 70 Used Making Electric Switches Statues Utensils AmmunFollowing Alloys Alloy Copper Following Alloys Iron Contain Carbon Three Metal Pieces X Z Taken Cleaned Sand Paper Separately Put Test Tubes Ii Iii Respectively ContaiObserved Solution Sodium Sulphate Added Solution Barium Chloride Taken Test Tube Write Equation ChemFour Students P Q R Noted Initial Colour Solutions Kept Beakers Ii Iii Iv Inserting Zinc Rod SolutioConsider Following Table Metal Snso4 Pbso4 Hgso4 Baso4 Sn Displaced Displaced Reaction Pb Reaction DRed Brown Metal X Forms Salt Xso4 Hydrogen Sulphide Gas Passed Aqueous Solution Xso4 Black PrecipitaAqueous Solution Compound P Reacts Sodium Bromide Solution Form Yellow Precipitate Compound Q Used PStrip Metal X Dipped Blue Coloured Salt Solution Yz Time Colour Solution Gets Discharged Metal FormeThree Metal Pieces X Z Taken Cleaned Sand Paper Separately Put Test Tubes Ii Iii Respectively Contai List Tabular Three Chemical Properties Basis Differentiate Metal Non Metal B Give Reasons Following Write Chemical Equations Following Reactions Calcium Metal Reacts Water Ii Cinnabar Heated PresenceExplain Following Sodium Chloride Ionic Compound Conduct Electricity Solid State However Conduct EleQWould Observe Adding Zinc Granules Freshly Prepared Ferrous Sulphate Solution Give Reason Answer Classify Following Reactions Different Types Agno3 Aq Nacl Aq Agcl Nano3 Aq Ii Cao H2o L Ca Oh 2 Aq Following Metals Used Thermometer Metals Produce Ringing Sound Striking SaidMetals Show Property Malleability Except Non Metal Could Used Antiseptic Property Match Following Non Metals Uses Non Metal Uses Chlorine Fertilisers Ii Oxygen B Disinfectant Iii NitName Metal Widely Used Making Aeroplanes Following Statements Incorrect Match Following Columns Column Column Ii Sulphur Antiseptic B Chlorine Ii Fungicide C Iodine Iii InsAqueous Solution Compound Reacts Silver Nitrate Solution Form White Precipitate Compound B Used AntiName Alloy Contain Aluminium Homogeneous Composition Choose Incorrect Statement Given Reaction Nitric Acid Carbon Carbon Non Metal React Nitric Acid Ii CPiece Metal X Dissolved Colorless Salt Solution Yz Time Color Solution Changes Green Metal Obtained Metal Reacts Nitric Acid Three Different Concentrations X Z Hno3conc X Salt B Gas Ca Hno3conc Salt BSilvery White Metal X Reacts Blue Vitriol Green Vitriol Turns Colorless Metal Oxide Metal X PreventsUse Following Information Answer Next Question Happen Given Granules Test Tube Use Following Information Answer Next Question One Following Required Identify Gas Evolved Reaction Following Chemical Reactions Type Precipitation Reaction Following Reactions Hydrogen Gas Evolved Find Correct Alternative Amongst Following Options Regarding Reaction Metals Water Following Reactions Example Displacement Reaction Omkar Gandhi Resident North India Went Vellore Small Town State Tamil Nadu Southern Part Country PurUnlike Metal Oxides Metal Oxide Metal X Dissolves Water Form Compound Compound Widely Used Paper MakMetal X Burns Air Black Coloured Compound Formed Small Amount Compound Taken Beaker Dilute HydrochloAssertion Copper Strip Placed Solution Silver Nitrate Colour Solution Changes Blue Colourless ReasonAssertion Potato Chips Packaged Nitrogen Gas Reason Nitrogen Gas Present Abundance Nature Compound Obtained Reaction Iron Steam Fe2o3 B Fe3o4 C Feo Fe2o3 Fe3o4Element X Reacts O2 Give Compound High Melting Point Compound Also Soluble Water Element X Likely IrHydrogen Sulphide Gas Passed Blue Solution Copper Sulphate Black Precipitate Copper Sulphide ObtaineFollowing Question Statement Assertion Followed Statement Reason Choose Correct Answer Following ChoFollowing Statements True Reaction Sodium Sulphate Solution Barium Chloride Solution Following Lustrous Sulphur Dioxide Reacts Water Form Compound X X Formed Turn Blue Litmus Paper Red X Beaten Thin Sheets Following Use Non Metal Copper Vessel Exposed Moist Air Long Acquires Dull Green Coating Green Material Formed Mixture Following Example Amphoteric Oxide One Following Statements Correct Displacement Reactions Following Materials Beaten Thin Sheets Happens Magnesium Ribbon Burnt Air Happens Iron Nail Dipped Copper Sulphate Solution Following Metals React Cold Water Bronze Alloy