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5 Years Ago

Two Ores A And B Were Taken. On Heating,

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An Ore On Heating In Air Produces Sulphur Dioxide

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Account For The Following: (i) Electrical Wires Are Coated (ii) Carbon Is Not Uses For Reducing

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A Metal Acts As A Good Reducing Agent. It Reduces Fe2O3 And MnO2

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Compound X And Aluminium Are Used To Join Railway Tracks

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State Which Of The Following Chemical Reactions Will Take Place Or Which Will Not, Giving Suitable Reason For Each?

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5 Years Ago

P, Q And R Are 3 Elements Which Undergo Chemical Reactions According To The Following Equations

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5 Years Ago

(i) Write Any Two Properties Of Ionic Compounds. (ii) Show The Formation Of Aluminium Chloride By The Transfer Of Electrons Between The Atoms.

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A Student Was Given Mg, Zn, Fe And Cu Metals. He Puts Each Of Them In Dil.

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Cheshta, A 10th Class Student Was Asked To Identify Iron, Copper, Zinc And Aluminium Only By

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Explain The Reactions Of Different Metals With Hot Water, Cold Water And Steam.

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Explain What Happens If Bauxite Containing Iron And Silica As Impurities Is Directly Subjected To The Peocess Of Electrolytic Reduction Without Prior Purification.

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Maya 5 Years Ago

Name An Alloy Which Has Mercury As One Of Its Constituents.

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Name An Alloy That Contains A Non-metal As One Of Its Constituents.

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Can Rusting Of Iron Nail Occur In Distilled Water?

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5 Years Ago

Name Any Two Alloys Whose Electrical Conductivity Is Less Than That Of Pure Metals.

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5 Years Ago

What Is Meant By 22 Carat Gold?

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5 Years Ago

Name The Metals Which Are Usually Alloyed With Gold To Make It Harder.

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Name Two Metals That Are Obtained By Electrolysis Of Their Chlorides In Molten Form.

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Amirul Hassan 5 Years Ago

A Green Layer Is Gradually Formed On A Copper Plate When Left Exposed To Air For A Week In A Bathroom. What Could This Green Substance Be?

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Jeet 5 Years Ago

What Is Anode Mud?

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5 Years Ago

Metals Are Refined By Using Different Methods. Which Of The Following Metals Are Refined By Electrolytic Refining? Au, Cu, Na And K

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5 Years Ago

Why Does Calcium Float In Water?

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5 Years Ago

Name One Property Which Is Not Shown By Ionic Compounds

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5 Years Ago

Show The Formation Of MgO By The Transfer Of Electrons In The Two Elements Using Electron Dot Structures. Or Atomic Number Of Mg Is 12 Or Using The Electronic Configurations

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5 Years Ago

Show The Electron Transfer In The Formation Of MgCL2 From Its Elements.

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5 Years Ago

A Cleaned Aluminium Foil Was Placed In An Aqueous Solution Of Zinc Sulphate

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5 Years Ago

A Piece Of Granulated Zinc Was Dropped Into Copper Sulphate Solution

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5 Years Ago

Name One Metal Which Reacts Neither With Cold Water, Nor With Hit Water, But Reacts With Steam To Produce Hydrogen Gas

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5 Years Ago

Name A Solvent In Which Electrovalent Compounds Are Soluble And A Solvent In Which They Are In Soluble.

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Two Ores A And B Were Taken. On Heating,

An Ore On Heating In Air Produces Sulphur Dioxide

Account For The Following: (i) Electrical Wires Are Coated (ii) Carbon Is Not Uses For Reducing

A Metal Acts As A Good Reducing Agent. It Reduces Fe2O3 And MnO2

Compound X And Aluminium Are Used To Join Railway Tracks

State Which Of The Following Chemical Reactions Will Take Place Or Which Will Not, Giving Suitable Reason For Each?

P, Q And R Are 3 Elements Which Undergo Chemical Reactions According To The Following Equations

(i) Write Any Two Properties Of Ionic Compounds. (ii) Show The Formation Of Aluminium Chloride By The Transfer Of Electrons Between The Atoms.

A Student Was Given Mg, Zn, Fe And Cu Metals. He Puts Each Of Them In Dil.

Cheshta, A 10th Class Student Was Asked To Identify Iron, Copper, Zinc And Aluminium Only By

Explain The Reactions Of Different Metals With Hot Water, Cold Water And Steam.

Explain What Happens If Bauxite Containing Iron And Silica As Impurities Is Directly Subjected To The Peocess Of Electrolytic Reduction Without Prior Purification.

Name An Alloy Which Has Mercury As One Of Its Constituents.

Name An Alloy That Contains A Non-metal As One Of Its Constituents.

Can Rusting Of Iron Nail Occur In Distilled Water?

Name Any Two Alloys Whose Electrical Conductivity Is Less Than That Of Pure Metals.

What Is Meant By 22 Carat Gold?

Name The Metals Which Are Usually Alloyed With Gold To Make It Harder.

Name Two Metals That Are Obtained By Electrolysis Of Their Chlorides In Molten Form.

A Green Layer Is Gradually Formed On A Copper Plate When Left Exposed To Air For A Week In A Bathroom. What Could This Green Substance Be?

What Is Anode Mud?

Metals Are Refined By Using Different Methods. Which Of The Following Metals Are Refined By Electrolytic Refining? Au, Cu, Na And K

Why Does Calcium Float In Water?

Name One Property Which Is Not Shown By Ionic Compounds

Show The Formation Of MgO By The Transfer Of Electrons In The Two Elements Using Electron Dot Structures. Or Atomic Number Of Mg Is 12 Or Using The Electronic Configurations

Show The Electron Transfer In The Formation Of MgCL2 From Its Elements.

A Cleaned Aluminium Foil Was Placed In An Aqueous Solution Of Zinc Sulphate

A Piece Of Granulated Zinc Was Dropped Into Copper Sulphate Solution

Name One Metal Which Reacts Neither With Cold Water, Nor With Hit Water, But Reacts With Steam To Produce Hydrogen Gas

Name A Solvent In Which Electrovalent Compounds Are Soluble And A Solvent In Which They Are In Soluble.

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