Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10th
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Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide chapter 8 - Periodic Classification of Elements [Latest edition]

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Class 10th SSLC Science Answers Guide - Shaalaa.com
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Chapter 8: Periodic Classification of Elements

Evaluation
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Evaluation [Pages 121 - 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Pages 121 - 122]

Choose the best answer

Evaluation | Q I. 1. | Page 121

The number of periods and groups in the periodic table are ______

  • 6, 16

  • 7, 17

  • 8, 18

  • 7, 18

Evaluation | Q I. 2. | Page 121

The basis of modern periodic law is ______.

  • atomic number

  • atomic mass

  • isotopic mass

  • number of neutrons

Evaluation | Q I. 3. | Page 121

______ group contains the member of the halogen family.

  • 17th

  • 15th

  • 18th

  • 16th

Evaluation | Q I. 4. | Page 121

______ is a relative periodic property.

  • atomic radii

  • ionic radii

  • electron affinity

  • electronegativity

Evaluation | Q I. 5. | Page 121

Chemical formula of rust is ______

  • FeO.xH2O

  • FeO4.xH2O

  • Fe2O3.xH2O

  • FeO

Evaluation | Q I. 6. | Page 121

In the aluminothermic process, the role of Al is _____.

  • oxidizing agent

  • reducing agent

  • hydrogenating agent

  • sulphurising agent

Evaluation | Q I. 7. | Page 121

The process of coating the surface of the metal with a thin layer of zinc is called ______

  • painting

  • thinning

  • galvanization

  • electroplating

Evaluation | Q I. 8. | Page 121

Which of the following have inert gases 2 electrons in the outermost shell.

  • He

  • Ne

  • Ar

  • Kr

Evaluation | Q I. 9. | Page 122

Neon shows zero electron affinity due to ______.

  • stable arrangement of neutrons

  • stable configuration of electrons

  • reduced size

  • increased density

Evaluation | Q I. 10. | Page 122

______ is an important metal to form an amalgam.

  • Ag

  • Hg

  • Mg

  • Al

Evaluation [Page 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 122]

Fill in the blanks

Evaluation | Q II. 1. | Page 122

If the electronegativity difference between two bonded atoms in a molecule is greater than 1.7, the nature of bonding is ______

Evaluation | Q II. 2. | Page 122

______ is the longest period in the periodical table.

Evaluation | Q II. 3. | Page 122

______ forms the basis of the modern periodic table.

Evaluation | Q II. 4. | Page 122

If the distance between two Cl atoms in a Cl2 molecule is 1.98Å, then the radius of the Cl atom is ______.

Evaluation | Q II. 5. | Page 122

Among the given species A–, A+, and A, the smallest one in size is ______.

Evaluation | Q II. 6. | Page 122

The scientist who propounded the modern periodic law is ______.

Evaluation | Q II. 7. | Page 122

Across the period, ionic radii ______

  • increases

  • decreases

Evaluation | Q II. 8. | Page 122

______ and ______ are called inner transition elements.

Evaluation | Q II. 9. | Page 122

The chief ore of Aluminium is ______

Evaluation | Q II. 10. | Page 122

The chemical name of rust is ______.

Evaluation [Page 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 122]

Evaluation | Q III. | Page 122

Match the following

1. Galvanisation Noble gas elements
2. Calcination Coating with Zn
3. Redox reaction Silver-tin amalgam
4. Dental filling Alumino thermic process
5. Group 18 elements Heating in the absence of air
Evaluation [Page 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 122]

True or False: (If false give the correct statement)

Evaluation | Q IV. 1. | Page 122

Moseley’s periodic table is based on atomic mass.

  • True

  • False

Evaluation | Q IV. 2. | Page 122

Ionic radius increases across the period from left to right.

  • True

  • False

Evaluation | Q IV. 3. | Page 122

All ores are minerals, but all minerals cannot be called ores.

  • True

  • False

Evaluation | Q IV. 4. | Page 122

Al wires are used as electric cables due to their silvery-white colour.

  • True

  • False

Evaluation | Q IV. 5. | Page 122

An alloy is a heterogenous mixture of metals.

  • True

  • False

Evaluation [Page 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 122]

Assertion and Reason

Evaluation | Q V. 1. | Page 122

Answer the following question using the data given below:

  • Assertion: The nature of bond in HF molecule is ionic
  • Reason: The electronegativity difference between H and F is 1.9.
  • A and R are correct, R explains the A

  • A is correct, R is wrong

  • A is wrong, R is correct

  • A and R are correct, R doesn’t explain A

Evaluation | Q V. 2. | Page 122

Answer the following question using the data given below:

  • Assertion: Magnesium is used to protect steel from rusting.
  • Reason: Magnesium is more reactive than iron.
  • A and R are correct, R explains the A

  • A is correct, R is wrong

  • A is wrong, R is correct

  • A and R are correct, R doesn’t explain A

Evaluation | Q V. 3. | Page 122

Answer the following question using the data given below:

  • Assertion: An uncleaned copper vessel is covered with a greenish layer.
  • Reason: copper is not attacked by alkali.
  • A and R are correct, R explains the A

  • A is correct, R is wrong

  • A is wrong, R is correct

  • A and R are correct, R doesn’t explain A

Evaluation [Page 122]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 122]

Short answer questions

Evaluation | Q VI. 1. | Page 122

A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.

Evaluation | Q VI. 2. | Page 122

A is a silvery-white metal. A combines with O2 to form B at 800°C, the alloy of A is used in making the aircraft. Find A and B.

Evaluation | Q VI. 3. | Page 122

What is rust?

Evaluation | Q VI. 3. | Page 122

Give the equation for the formation of rust.

Evaluation | Q VI. 4. | Page 122

State two conditions necessary for rusting of iron.

Evaluation [Page 123]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 123]

Long answer questions

Evaluation | Q VII. 1. a) | Page 123

State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.

Evaluation | Q VII. 1. b) | Page 123

Along with cryolite and alumina, another substance is added to the electrolyte mixture. Name the substance and give one reason for the addition.

Evaluation | Q VII. 2. | Page 123

The electronic configuration of metal A is 2, 8, 18, 1.

The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2 SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C, and D.

Evaluation | Q VII. 3. | Page 123

Explain the smelting process.

Evaluation [Page 123]

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide Chapter 8 Periodic Classification of ElementsEvaluation [Page 123]

HOT questions

Evaluation | Q VIII. 1. | Page 123

Metal A belongs to period 3 and group 13. A in red hot condition reacts with steam to form B. A with strong alkali forms C. Find A, B, and C with reactions.

Evaluation | Q VIII. 2. | Page 123

Name the acid that renders aluminum passive. Why?

Evaluation | Q VIII. 3. a) | Page 123

Identify the bond between H and F in the HF molecules.

Evaluation | Q VIII. 3. b) | Page 123

What property forms the basis of identification?

Evaluation | Q VIII. 3. c) | Page 123

How does the property vary in periods and in groups?

Chapter 8: Periodic Classification of Elements

Evaluation
Class 10th SSLC Science Answers Guide - Shaalaa.com

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide chapter 8 - Periodic Classification of Elements

Tamil Nadu Board Samacheer Kalvi solutions for Class 10th SSLC Science Answers Guide chapter 8 (Periodic Classification of Elements) 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 Tamil Nadu Board of Secondary Education Class 10th SSLC Science Answers Guide solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Tamil Nadu Board Samacheer Kalvi textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 10th SSLC Science Answers Guide chapter 8 Periodic Classification of Elements are Modern Periodic Law, The Modern Periodic Table, Periodic Properties, Periodic Properties: Electronegativity, Periodic Properties: Atomic Radius Or Atomic Size, Periodic Properties: Ionic Radii, Periodic Properties: Ionisation Potential (Ionisation Energy), Periodic Properties: Electron Affinity, History of Periodic Table: Early Attempts at the Classification of Elements, Metallurgy, Types of Separation or Concentration of an Ore, Metallurgy of Aluminium, Metallurgy of Copper, Extraction of Copper, Extraction of Iron, Extraction of Aluminium, Metallurgy of Iron, Occurrence of Ores in Tamil Nadu, Alloys, Types of Elements: Metals, Corrosion of Metals and Its Prevention, Making Alloys, Pamban Bridge.

Using Tamil Nadu Board Samacheer Kalvi Class 10th solutions Periodic Classification of Elements 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 Tamil Nadu Board Samacheer Kalvi Solutions are important questions that can be asked in the final exam. Maximum students of Tamil Nadu Board of Secondary Education Class 10th prefer Tamil Nadu Board Samacheer Kalvi Textbook Solutions to score more in exam.

Get the free view of chapter 8 Periodic Classification of Elements Class 10th extra questions for Class 10th SSLC Science Answers Guide and can use Shaalaa.com to keep it handy for your exam preparation

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