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![Balbharati solutions for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board chapter 8 - Metallurgy - Shaalaa.com](/images/science-and-technology-part-1-english-standard-10-maharashtra-state-board_6:c9a4ae86c3724b9b8c519cd188fdfa1f.jpg "Balbharati solutions for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board chapter 8 - Metallurgy")
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Solutions for Chapter 8: Metallurgy
Below listed, you can find solutions for Chapter 8 of Maharashtra State Board Balbharati for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board.
Balbharati solutions for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board 8 Metallurgy Intext Questions [Pages 93 - 108]
Think about it
Which method do we use when we want to study many things together and at the same time?
Can you tell?
State any five physical properties of metals.
State any five physical properties of non-metals.
Use your brain power!
In the reaction between chlorine and HBr a transformation of HBr into Br2 takes place. Can this transformation be called oxidation? Which is the oxidant that brings about this oxidation?
Can you recall?
What is the electronic definition of oxidation?
Can you recall?
What is the electronic definition of oxidation?
What is the electronic definition of reduction?
Use your brain power!
Write the electrode reaction for the electrolysis of molten magnesium chloride.
Write the electrode reaction for the electrolysis of molten calcium chloride.
Can you tell?
What are the moderately reactive metals?
In which form do the moderately reactive metals occur in nature?
Can you recall?
What is corrosion?
Have you seen the following thing?
Old iron bars of buildings.
Have you seen the following thing?
Copper vessels not cleaned for long time.
Have you seen the following thing?
Silver ornaments or idols exposed to air for a long time.
Have you seen the following thing?
Old vehicles fit to be thrown away.
Think about it
Why do silver articles turn blackish while copper vessels turn greenish on keeping in air for a long time?
Why do pure gold and platinum always glitter?
Can you tell?
Which measures would you suggest to stop the corrosion of metallic articles or not to allow the corrosion to start?
What is done so to prevent rusting of iron windows and iron doors of your house?
Use your brain power!
Can we permanently prevent the rusting of an iron article by applying a layer of paint on its surface?
Collect information
What are the various alloys used in daily life? Where are those used?
What are the properties that the alloy used for minting coins should have?
Balbharati solutions for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board 8 Metallurgy Exercise [Pages 108 - 109]
Write name.
Alloy of sodium with mercury.
Write name.
Molecular formula of the common ore of aluminium.
Write name.
The oxide that forms salt and water by reacting with both acid and base.
Write name.
The device used for grinding an ore.
Write name.
The nonmetal having electrical conductivity.
Write name.
The reagent that dissolves noble metals.
Make pairs of substances and their properties
| Substance | Property |
| a. Potassium bromide (KBr) | 1. Combustible |
| b. Gold | 2. Soluble in water |
| c. Sulphur | 3. No chemical reaction |
| d. Neon | 4. High ductility. |
Identify the pairs of metals and their ores from the following.
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
Explain the term Metallurgy.
Explain the following term:
Ores
Explain the term Minerals.
Explain the term Gangue.
Write scientific reasons.
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Write scientific reason.
Generally the ionic compounds have high melting points.
Write scientific reason.
Sodium is always kept in kerosene.
Write scientific reason.
Pine oil is used in froth flotation.
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Draw a neat labelled diagram.
Magnetic separation method.
Draw a neat labelled diagram.
Froth floatation method.
Draw a neat labelled diagram.
Electrolytic reduction of alumina.
Draw a neat labelled diagram.
Hydraulic separation method.
Write chemical equation for the event.
Aluminium came in contact with air.
Write a chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
Write chemical equation for the event.
Electrolysis of alumina is done.
Write a chemical equation for the following event.
Zinc oxide is dissolved in dilute hydrochloric acid.
Complete the statement using every given option.
During the extraction of aluminium..............
Ingredients and gangue in bauxite.
Complete the statement using every given option.
During the extraction of aluminium..............
Use of leaching during the concentration of ore.
Complete the statement using every given option.
During the extraction of aluminium..............
Chemical reaction of transformation of bauxite into alumina by Hall’s process.
Complete the statement using every given option.
During the extraction of aluminium.........
Heating the aluminium ore with concentrated caustic soda.
Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.
Solutions for 8: Metallurgy
Balbharati solutions for Science and Technology Part 1 [English] Standard 10 Maharashtra State Board chapter 8 - Metallurgy
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Concepts covered in Science and Technology Part 1 [English] Standard 10 Maharashtra State Board chapter 8 Metallurgy are Physical Properties of Metals, Basic Principles of Metallurgy > Extraction of Metals, Chemical Properties of Metal, Physical Properties of Non-metal, Reactivity Series of Metals, Chemical Properties of Non-metal, Ionic Compounds, Metallurgy, Basic Principles of Metallurgy > Refining of Metals, Reactions of Metals, Basic Principles of Metallurgy > Concentration of Ores, Corrosion of Metals, Prevention of Corrosion.
Using Balbharati Science and Technology Part 1 [English] Standard 10 Maharashtra State Board solutions Metallurgy exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Science and Technology Part 1 [English] Standard 10 Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
Get the free view of Chapter 8, Metallurgy Science and Technology Part 1 [English] Standard 10 Maharashtra State Board additional questions for Mathematics Science and Technology Part 1 [English] Standard 10 Maharashtra State Board Maharashtra State Board, and you can use Shaalaa.com to keep it handy for your exam preparation.
