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Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 8 - Metallurgy [Latest edition]

Chapters

Chapter 8: Metallurgy

[Pages 108 - 109]

Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board Chapter 8 Metallurgy [Pages 108 - 109]

Q 1.1 | Page 108

Write name.
 Alloy of sodium with mercury.

Q 1.2 | Page 108

Write name.

Molecular formula of the common ore of aluminium.

Q 1.3 | Page 108

Write name.

The oxide that forms salt and water by reacting with both acid and base.

Q 1.4 | Page 108

Write name.

The device used for grinding an ore.

Q 1.5 | Page 108

Write name.

The nonmetal having electrical conductivity.

Q 1.6 | Page 108

Write name. 

 The reagent that dissolves noble metals.

Q 2 | Page 108

Make pairs of substances and their properties 

Substance Property
a. Potassium bromide 1. Combustible
b. Gold 2. Soluble in water
c. Sulphur 3. No chemical reaction
d. Neon 4. High ductility.

 

Q 3 | Page 109

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
Q 4.1 | Page 109

Explain the term of Metallurgy .

 

Q 4.2 | Page 109

Explain the term of Ores .

Q 4.3 | Page 109

Explain the term Minerals .

Q 4.4 | Page 109

Explain the term  Gangue .

Q 5.1 | Page 109

Write scientific reason .

 Lemon or tamarind is used for cleaning copper vessels turned greenish.

Q 5.2 | Page 109

Write scientific reason 

Generally the ionic compounds have high melting points.

Q 5.3 | Page 109

Write scientific reason  .

Sodium is always kept in kerosene.

Q 5.4 | Page 109

Write scientific reason .

Pine oil is used in froth flotation.

Q 5.5 | Page 109

Write scientific reason

Anodes need to be replaced from time to time during the electrolysis of alumina.

Q 6 | Page 109

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.

Q 7 | Page 109

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.

Q 8.1 | Page 109

Draw a neat labelled diagram. 

Magnetic separation method.

Q 8.2 | Page 109

Draw a neat labelled diagram. 

Froth floatation method.

Q 8.3 | Page 109

Draw a neat labelled diagram.

 Electrolytic reduction of alumina.

Q 8.4 | Page 109

Draw a neat labelled diagram.

Hydraulic separation method.

Q 9.1 | Page 109

Write chemical equation for the event.
Aluminium came in contact with air.

Q 9.2 | Page 109

Write chemical equation for the event.

 Iron filings are dropped in aqueous solution of copper sulphate.

Q 9.3 | Page 109

Write chemical equation for the event.

 A reaction was brought about between ferric oxide and aluminium.

Q 9.4 | Page 109

Write chemical equation for the event.

Electrolysis of alumina is done.

Q 9.5 | Page 109

Write chemical equation for the event.

Zinc oxide is dissolved in dilute hydrochloric acid.

Q 10.1 | Page 109

Complete the  statement using every given option.
During the extraction of aluminium..............

Ingredients and gangue in bauxite.

Q 10.2 | Page 109

Complete the  statement using every given option.
During the extraction of aluminium..............

Use of leaching during the concentration of ore.

Q 10.3 | Page 109

Complete the  statement using every given option.
During the extraction of aluminium..............

Chemical reaction of transformation of bauxite into alumina by Hall’s process.

Q 10.4 | Page 109

Complete the  statement using every given option.
During the extraction of aluminium..............

Heating the aluminium ore with concentrated caustic soda.

Q 11 | Page 109

Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.

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Chapter 8: Metallurgy

Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 8 - Metallurgy

Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 8 (Metallurgy) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Science and Technology Part 1 10th Standard SSC Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 8 Metallurgy are Chemical Properties of Metals, Equations for Reactions of Metals and Non-metals (S, C, P, Na, K, Ca, Mg) with O, Reactivity Series of Metals, Formation and Properties of Ionic Compounds, Occurrence of Metals, Basic Principles of Metallurgy, Concept of Corrosion of Metals and Its Prevention, Non Metals and Its Physical Properties, Extraction of Metals from Ore, Refining of Metals, Non Metals and Its Physical Properties, Concept of Corrosion of Metals and Its Prevention, Concentration of Ores.

Using Balbharati 10th Standard [इयत्ता १० वी] solutions Metallurgy exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 10th Standard [इयत्ता १० वी] prefer Balbharati Textbook Solutions to score more in exam.

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