NCERT Solutions for Class 10 Science Chapter 3

Free download NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals Page 40 or Page 46 or Page 49 or Page 53 or Page 55 or Exercises in English Medium or  पेज 45 के उत्तर or पेज 51 के उत्तर or पेज 54 के उत्तर or पेज 59 के उत्तर or पेज 61 के उत्तर or अभ्यास के प्रश्न उत्तर  in हिंदी मीडियम to study online or download in PDF form. NCERT Books Solutions Apps based on latest CBSE Syllabus are also available to download.


Class10
SubjectScience – विज्ञान
ChapterMetals and Non-Metals

NCERT Solutions for Class 10 Science Chapter 3

Go back to Class 10 Science Main Page

English Medium Solutions





Hindi Medium Solutions

10 Science Page 40 Answers





NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 40 answers are given below. For other answers visit to Page 46 or Page 49 or Page 53 or Page 55 or Exercises or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 40

10 Science Page 46 Answers

10 Science Chapter 3 Metals and Non-Metals page 46 answers are given below. For other answers visit to Page 40 or Page 49 or Page 53 or Page 55 or Exercises or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 46



NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 46 in pdf form

10 Science Page 49 Answers

Class 10 Science Chapter 3 Metals Non-Metals page 49 answers are given below. For other answers visit to Page 40 or Page 46 or Page 53 or Page 55 or Exercises or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 49

10 Science Page 53 Answers




Class 10 Science Chapter 3 page 53 answers are given below. For other answers visit to Page 40 or Page 46 or Page 49 or Page 55 or Exercises or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 53

10 Science Page 55 Answers

Class 10 Science Metals and Non-Metals page 55 answers are given below. For other answers visit to Page 40 or Page 46 or Page 49 or Page 53 or Exercises or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals page 55



10 Science Exercises Answers

Class 10 Science Chapter 3 Exercises answers are given below. For other answers visit to Page 40 or Page 46 or Page 49 or Page 53 or Page 55 or go for  हिंदी मीडियम Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

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10 विज्ञान पाठ 3 पेज 45 के उत्तर




Class 10 Science Chapter 3 Metals and Non-Metals पेज 45 के उत्तर are given below. For other answers visit to  पेज 51 के उत्तर or पेज 54 के उत्तर or पेज 59 के उत्तर or पेज 61 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals पेज 45 के उत्तर

10 विज्ञान पाठ 3 पेज 51 के उत्तर




10 Science Chapter 3 पेज 51 के उत्तर are given below. For other answers visit to  पेज 45 के उत्तर or पेज 54 के उत्तर or पेज 59 के उत्तर or पेज 61 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals पेज 51 के उत्तर
10 Science Chapter 3 Metals and Non-Metals पेज 51 के उत्तर in pdf

10 विज्ञान पाठ 3 पेज 54 के उत्तर





10 Science Metals and Non-Metals पेज 54 के उत्तर are given below. For other answers visit to  पेज 45 के उत्तर or पेज 51 के उत्तर or पेज 59 के उत्तर or पेज 61 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals पेज 54 के उत्तर

10 विज्ञान पाठ 3 पेज 59 के उत्तर




10 Science Chapter 3 Metals and Non-Metals पेज 59 के उत्तर are given below. For other answers visit to  पेज 45 के उत्तर or पेज 51 के उत्तर or पेज 54 के उत्तर or पेज 61 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals पेज 59 के उत्तर

10 विज्ञान पाठ 3 पेज 61 के उत्तर




10 Science Chapter 3 Metals Non-Metals पेज 61 के उत्तर are given below. For other answers visit to  पेज 45 के उत्तर or पेज 51 के उत्तर or पेज 54 के उत्तर or पेज 59 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals पेज 61 के उत्तर

10 विज्ञान पाठ 3 अभ्यास के प्रश्न उत्तर





Class 10 Science Chapter 3 Metals and Non-Metals अभ्यास के प्रश्न उत्तर are given below. For other answers visit to  पेज 45 के उत्तर or पेज 51 के उत्तर or पेज 54 के उत्तर or पेज 59 के उत्तर or पेज 61 के उत्तर or go for English Medium Solutions. Visit to Class 10 Science Main Page or go to Top of the page.

10 Science Chapter 3 Metals and Non-Metals in pdf sols
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Visit to Class 10 Science Main Page or go to Top of the page



Important Questions from CBSE Board Papers
Class X Chemistry – Metals and Non – Metals

Question 1:
Why are aluminium and copper metals used for making cooking vessels?
Answer 1:
Aluminium and copper metals are good conductor of heat. When exposed to air, these develop a layer of oxide. This makes it resistant to further corrosion.

Question 2:
Compare the properties of a typical metal and non-metal on the basis of the following:
(i) nature of oxide formed by them
(ii) conductivity.
Answer 2:
(i) Metals from basic oxide, e.g., sodium gives a basic oxide, Na2O. Non-metals  from acidic oxide, e.g., sulphur gives an acidic oxide, SO2.
(ii) Metals have good conductivity, e.g., copper is a good conductor. Non-metals do not conduct heat or electricity, e.g., sulphur.

Question 3:
Explain, why some metals are more reactive and others less reactive and others less reactive?
OR
What determines the reactivity of metals?
Answer 3:
When metals react, they lose electrons to form positive ions. Such metals which can lose electrons easily to form positive ions when reacted with other substances, are reactive metals. On the other hand, if a metal loses electrons less rapidly to form positive ions, it will reacts slowly with other substances. Such a metal will be less reactive. For example, sodium atom is a very reactive metals because it readily loses one electron, forms a positive ion which then combines with other substances. On the other hand, lead atom loses electrons with difficulty to form positive ions, so lead metal is less reactive.

Question 4:
Why is sodium kept immersed in kerosene oil?
Answer 4:
Sodium is very reactive. If kept exposed to air, it catches fire.

Question 5:
Distinguish between calcinations and roasting.
Answer 5:
Calcination:
(i) The ore is heated is absence of air.
(ii) It is used for carbonate ores.
Roasting:
(i) The ore is heated in the presence of air.
(ii) It is used for sulphide ores.


More Questions for Exams

Question 1:
Give reason:
(i) Ionic compounds have high melting point.
(ii) Ionic compounds are hard crystalline solids.
Answer 1:
(i) In iconic  compounds, ions are joined together due to  powerful electrostatic forces, therefore, considerable energy is required to separate these ions and break the lattice.  Thus ionic compounds have high melting points.
(ii) There are solids due to strong force of attraction between oppositely charged ions resulting in the formation of hard crystalline lattice.

Question 2:
How is an ore different from a mineral?
OR
“all ores are minerals but all minerals are not ores”. Justify the statement with examples.
Answer 2:
The metals found in nature in combined state are called minerals. If some minerals contain a very high percentage of a particular metal and the metals can be profitably and economically extracted, then it is called an ore.

Question 3:
What are alloys?
Answer 3:
An alloy is a homogeneous mixture of two or more metals, or a metals and a non-metal. It is prepared by first melting the main metal, and then dissolving the required amount of other metals or non-metals. This mixture is then cooled to form an alloy of a given composition.

Question 4:
Atmospheric air always contains moisture. Then, how can you protect iron articles from the affect of atmosphere?
Answer 4:
Iron articles can be protected from the effect of atmosphere by painting, oiling and greasing. This gives temporary protection to iron articles. For long time protection, galvanising or chrome plating are quite useful.

Question 5:
What is meant by metallurgy?
Answer 5:
Metallurgy involves various  processes starting with the treatment of ore to getting metals in the pure form.

Download NCERT Solutions Apps for offline use.

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

Metals that are more reactive than hydrogen displace it from dilute acids.
For example: sodium and potassium.

Metals that are less reactive than hydrogen do not displace it.
For example: copper and silver.

What are the two important ways to prevent the rusting of iron?

Oiling, greasing, or painting: By applying oil, grease, or paint, the surface becomes water proof and the moisture and oxygen present in the air cannot come into direct contact with iron. Hence, rusting is prevented.

Galvanisation: An iron article is coated with a layer of zinc metal, which prevents the iron to come in contact with oxygen and moisture. Hence, rusting is prevented.

Platinum, gold and silver are used to make jewellery. Why?

Platinum, gold, and silver are used to make jewellery because they are very lustrous. Also, they are very less reactive and do not corrode easily.

Why are Sodium, potassium and lithium stored under oil?

Sodium, potassium, and lithium are very reactive metals and react very vigorously with air as well as water. Therefore, they are kept immersed in kerosene oil in order to prevent their contact with air and moisture.

Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. Why?

Though aluminium is a highly reactive metal, it is resistant to corrosion. This is because aluminium reacts with oxygen present in air to form a thin layer of aluminium oxide. This oxide layer is very stable and prevents further reaction of aluminium with oxygen. Also, it is light in weight and a good conductor of heat. Hence, it is used to make cooking utensils.

Carbonate and Sulphide ores are usually converted into oxides during the process of extraction. Why?

Carbonate and sulphide ores are usually converted into oxides during the process of extraction because metals can be easily extracted from their oxides rather than from their carbonates and sulphides.

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