We offer free Maharashtra Board Class 10 Science Chapter 8 Metallurgy questions answers in Pdf format. Our expert team have gone through this chapter and prepared Notes for the students who are facing difficulties in summarizing of this chapter. We assure you that you can score more marks by using our Pdf files. Let us tell you that all the questions answers in concern with this chapter are prepared by our expert teachers team. Here you will find three Pdf files, among them first Pdf files consists of Textbook Questions Answers whereas in second Pdf files you will get the additional extra questions for practices. In the third and last Pdf files, you will get full exercise of this chapter.
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|Maharashtra state Board||Std 10||Chapter 8 Metallurgy|
Class 10 Science Chapter 8 Metallurgy questions answers in Pdf format:
Here is what you all are waiting for. Teachers, parents and student, now you will find below the Solutions of Class 10 Science Chapter 8 Metallurgy questions answers. From the subject English of Maharashtra State Board.
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Class 10 Science Chapter 8 Metallurgy: Notes
As we go through the entire Class 10 Science Chapter 8 Metallurgy, we can see there are so many questions asked meanwhile and students are expected to answers them. Some students may face some problem while answering it , but we promise you that after reviewing our answer, you will gain the confidence to answers such questions. Our expert team teacher have divided the solutions into several parts,which will help you to understand this chapter better. Have a look at the following parts:
- Metallurgy (Can you recall?)
- Metallurgy (Use your brain power)
- Metallurgy (Observe/Discuss:)
- Metallurgy (Let’s Discuss:)
- Metallurgy (Observe:)
- Metallurgy (Let’s think:)
- Metallurgy (Paragraph based questions:)
- Metallurgy (Questions based on tables and charts:)
- Metallurgy (Activity based questions:)
- Metallurgy (Projects:)
Class 10 Science Chapter 8 Metallurgy: Question Bank
All those students who are preparing for the final exam and want to score more marks on board can refer to our question bank, among them are some questions may ask you in your final examination.
Beneath, in our Pdf documents, you get the Class 10 Science Chapter 8 Metallurgy questions answers, however our expert crew have faith in the query bank that allows you to help the students to get more marks.
Our expert team of teachers has prepared the best solutions to these questions. All the answers to these questions are given in our PDF file, which is given below. You can download it for your later study. In Our Pdf file of solutions of the Chapter 8 Metallurgy, you will find the solutions of Important Question bank given below.
We hope that this question bank will help you a little for your exam preparation.
Important Questions Bank
Fill in the blanks:
Question 1. ……………has the highest melting point.
Question 2. Mercury and…………are two metals in the liquid state at room temperature.
Question 3. …………is the hardest natural substance.
Question 4. The naturally occurring compounds of metals along with other impurities are known as………….
Question 5. The minerals from which metals are extracted profitably and conveniently are called…………..
Question 6. An ore contains some of the impurities like soil, sand, etc. These impurities are called…………
Question 7. The process of extraction of a metal from its ore is called……….
Question 8. Bauxite is a common ore of………..
Question 9. …………. process is used for the purification of bauxite.
Question 10. During the electrolysis of alumina, ………..is liberated at the anode.
Question 11. The reaction of iron oxide with aluminium is known as…………..reaction.
Question 12. The process of coating a thin layer of zinc on iron is known as…………
Question 13. The metal that produces a sound on striking a hard surface is said to be………….
Question 14. The process in which carbonate ores are changed into oxides by heating strongly in limited air is known as …………….
Question 15. …………compounds are insoluble in solvents like kerosene and petrol.
Question 16. …………… is used to obtain pure metals from impure metals.
Question 17. Corrosion can be prevented-by putting a layer of…………metal on corrosionable metal.
Rewrite the following statements by selecting the correct options:
Question 1. ………… is a metal.
Question 2. ………. is a nonmetal.
Question 3. ………… is a metalloid.
Question 4. Metalloids have properties of ………..
(c) both metals and nonmetals
(d) neither metals nor nonmetals
Question 5. …………. is a good conductor of electricity.
Question 6. ………. is a metal which is in liquid form at ordinary temperature and pressure.
Question 7. ………. is an amphoteric oxide.
Question 8. ……….. is an acidic oxide.
Question 9. ………. is a basic oxide.
Question 10. ………… is an ore of aluminium.
(d) Aluminium carbonate
Question 11. Bronze is an alloy of ………..
(a) copper and tin
(b) copper and zinc
(c) copper and iron
(d) iron and nickel
Question 12. An alloy prepared from iron, nickel and chromium is known as …………
(c) stainless steel
Question 13. …………. is an allotropic form of a nonmetal which conducts electricity.
Question 14. ………….. has an oxide which is soluble in sodium hydroxide.
Question 15. ………… prevents the rusting of iron.
Question 16. ………….. is obtained by the reduction of its oxide by carbon.
Question 17. ………….. is used as an anode during the electrolytic reduction of bauxite.
Question 18. Silver gets corroded due to ………… in air.
(b) hydrogen sulphide
(c) carbon dioxide
Question 19. …………. is the hardest substance and has the highest melting and boiling points.
Question 20. Jewellery articles are gold plated ………….
(a) to prevent corrosion
(b) to prevent rusting of the base metal
(c) to make articles attractive
(d) all of these
Question 21. To show that zinc is more reactive than copper, the correct procedure is to ………..
(a) prepare copper sulphate solution and dip a zinc strip in it
(b) prepare zinc sulphate solution and dip a copper strip in it
(c) heat together zinc and copper strips
(d) add dil. nitric acid to both the strips
Question 22. Iron is ………
(a) more reactive than zinc
(b) more reactive than aluminuium
(c) less reactive than copper
(d) less reactive than aluminium
Question 23. A solution of Al2(SO4)3 in water is …………
Question 24. A solution of ………… in water is blue in colour.
Question 25. A solution of …………. n water is green in colour.
Question 26. What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
(a) Cu, Fe, Zn, Al
(b) Al, Cu, Fe, Zn
(c) Zn, Al, Cu, Fe
(d) Fe, Zn, Al, Cu (Practice Activity Sheet – 2)
Question 27. During the extraction of aluminium ……….
(a) Ingredients and gangue in bauxite
(b) Use of leaching during the concentration of ore
(c) Chemical reaction of transformation of bauxite into alumina by Hall’s process.
(d) Heating the aluminium ore with concentrated caustic soda.
Question 28. A solution of CuSO4 in water is ………… in colour.
Question 29. Which of the following process is to be carried out to avoid the formation of greenish layer on brass vessels due to corrosion?
(c) Tinning(d) Alloying (Practice Activity Sheet – 3)
State whether the following statements are True or False (If a statement is false, correct it and rewrite it.):
Question 1. Metals are known as sonar metals.
Question 2. Diamond is the softest natural substance.
Question 3. Electrolysis method is used to obtain pure metals from impure metals.
Question 4. Iodine and diamond are lustrous substances.
Question 5. Aqua Regia is a mixture of conc. HCl and conc. HNO3 in the ratio of 1:3.
Question 6. Corrosion of metals can be stopped by detaching the air from metals.
Question 7. Due to corrosion a greenish layer forms on the surface of copper or brass vessel.
Question 8. Ionic compounds are soluble in kerosene.
Question 9. Ionic compounds in the solid state conduct electricity.
Question 10. Mercury, silver and gold are very reactive metals
Question 11. In electroplating a metal is coated with another metal using electrolysis.
Question 12. In anodising method. the copper or aluminium article is used as anode.
Question 13. Silver plated spoon, gold plated ornaments are the examples of alloying.
Question 14. silver amalgam is mainly used by dentists.
Question 15. Aluminium oxide is an acidic oxide.
Question 16. copper reacts with moist carbon form copper carbonate.
Question 17. Corrosion is degradation of a reaction with its environment.
Find the correlation in the given pair and rewrite the answer:
Question 1. Brass : Copper and Zinc :: Bronze :………….
Question 2. Tinning : Tin :: Galvanizing :…………….
Question 3. Pressure cooker : Anodizing :: Silver plated spoons :…………..
Question 4. The sulphides ores are strongly heated in air : Roasting :: The carbonates ores are strongly heated in a limited supply of air :………….
Question 5. Sulphide ores : Froth floatation method : Cassiterite ore :………..
Name the following:
Question 1. A metal which forms an amphoteric oxide.
Question 2. An alloy of copper and zinc.
Question 3. A compound which is added to lower the fusion temperature.
Question 4. A metal which does not react with cold water but reacts with steam.
Question 5. A common ore of aluminium.
Question 6. A metal which is in liquid state at ordinary temperature.
Question 7. Two metals which are malleable.
Question 8. Two metals which are ductile.
Question 9. Two metals which are good conductors of heat.
Question 10. Two metals which are good conductors of electricity.
Question 11. Two metals which are used for making cooking vessels.
Question 12. Two metals having low melting points.
Question 13. Two highly reactive metals.
Question 14. A nonmetal which is in liquid state at room temperature.
Question 15. Two ionic compounds.
Question 16. The process of heating the sulphide ore to a high temperature in the excess of air.
Question 17. The process of heating the carbonate ore to a high temperature in limited air.
Question 18. The compound formed by the reaction between aluminium oxide and sodium hydroxide.
Question 19. Two metals which are found in the free state in nature.
Question 20. A metal which has the highest melting point.
Question 21. Two nonmetals which are lustrous.
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