Read and download the CBSE Class 12 Chemistry Solid State Assignment Set A for the 2025-26 academic session. We have provided comprehensive Class 12 Chemistry school assignments that have important solved questions and answers for Unit 01 The Solid State. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.
Solved Assignment for Class 12 Chemistry Unit 01 The Solid State
Practicing these Class 12 Chemistry problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for Unit 01 The Solid State, covering both basic and advanced level questions to help you get more marks in exams.
Unit 01 The Solid State Class 12 Solved Questions and Answers
8. Define the term 'amorphous'. Give a few examples of amorphous solids.
An amorphous solid consists of particles of irregular shape. The arrangement of constituent particles
(atoms, molecules or ions) in such a solid has only short range order. Glass, rubber and plastics are typical examples of amorphous solids. 9
(ii) What is the coordination number of atoms: (a) in a cubic close-packed structure?
(b) in a body-centred cubic structure?
(i) The number of immediate neighbouring atoms with which each atom is in contact with is known as co-ordination number.
(ii) a) in a cubic close-packed structure the coordination number is 12
b) in a body-centred cubic structure the coordination number is 8
10 How will you distinguish between the following pairs of terms?
(i) Crystal lattice and unit cell?
(ii) Tetrahedral void and octahedral void?
(i) a regular three dimensional arrangement of points in space is called a crystal lattice. Unit cell is the smallest portion of a crystal lattice which, when repeated in different directions, generates the entire lattice. (ii
Tetrahedral void Octahedral void
1.it is a void formed when 4 spheres
(3 in one layer and 1 in next layer) are joined together.
2. Its co-ordination number is 4.
3.its radius is 0.225R where R is the radius of the close packed sphere
4. Tetrahedral void is much smaller than
octahedral void
1.it is a void formed when 6 spheres
(3 in one layer and 3 in next layer) are joined together.
2. Its co-ordination number is 6.
3.its radius is 0.414R where R is the radius of the close packed sphere
4. Octahedral void is much bigger than tetrahedral void.
11. What is a semiconductor? Describe the two main types of semiconductors and contrast their conduction mechanism.
Question. The fcc crystal contains how many atoms in each unit cell?
(a) 6
(b) 8
(c) 4
(d) 5.
Answer : C
Question. The number of atoms contained in a fcc unit cell of a monatomic substance is
(a) 1
(b) 2
(c) 4
(d) 6
Answer : C
Question. The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behaviour is a characteristic of substance forming
(a) allotropic crystals
(b) liquid crystals
(c) isomeric crystals
(d) isomorphous crystals.
Answer : B
Question. Glass is a
(a) liquid
(b) solid
(c) supercooled liquid
(d) transparent organic polymer.
Answer : C
Question. Most crystals show good cleavage because their atoms, ions or molecules are
(a) weakly bonded together
(b) strongly bonded together
(c) spherically symmetrical
(d) arranged in planes.
Answer : D
Question. The ability of a substance to assume two or more crystalline structures is called
(a) isomerism
(b) polymorphism
(c) isomorphism
(d) amorphism
Answer : B
Question. Cation and anion combines in a crystal to form following type of compound
(a) ionic
(b) metallic
(c) covalent
(d) dipole-dipole.
Answer : A
Question. For two ionic solids CaO and KI, identify the wrong statement among the following.
(a) CaO has high melting point.
(b) Lattice energy of CaO is much larger than that of KI.
(c) KI has high melting point.
(d) KI is soluble in benzene
Answer : D
Question. For orthorhombic system axial ratios are a ≠ b ≠ c and the axial angles are
(a) α = β = γ ≠ 90º
(b) α = β = γ = 90º
(c) α = γ = 90º, β ≠ 90º
(d) α ≠ β ≠ γ ≠ 90º
Answer : B
Question. The number of carbon atoms per unit cell of diamond unit cell is
(a) 6
(b) 1
(c) 4
(d) 8
Answer : D
| CBSE Class 12 Chemistry Solutions Assignment Set A |
| CBSE Class 12 Chemistry Solutions Assignment Set B |
| CBSE Class 12 Chemistry Solutions Questions |
| CBSE Class 12 Chemistry Halo Alkanes and Halo arenes Assignment |
| CBSE Class 12 Chemistry Halo Alkanes and Halo arenes Questions |
| CBSE Class 12 Chemistry Alcohols Phenols and Ethers Assignment |
| CBSE Class 12 Chemistry Alcohols Phenols and Ethers Questions |
| CBSE Class 12 Chemistry Aldehydes Ketons Carboxylic Acids Questions |
| CBSE Class 12 Chemistry Biomolecules Assignment |
| CBSE Class 12 Chemistry Biomolecules Notes and Questions |
| CBSE Class 12 Chemistry Biomolecules Questions |
Important Practice Resources for Class 12 Chemistry
CBSE Class 12 Chemistry Unit 01 The Solid State Assignment
Access the latest Unit 01 The Solid State assignments designed as per the current CBSE syllabus for Class 12. We have included all question types, including MCQs, short answer questions, and long-form problems relating to Unit 01 The Solid State. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.
Benefits of solving Assignments for Unit 01 The Solid State
Practicing these Class 12 Chemistry assignments has many advantages for you:
- Better Exam Scores: Regular practice will help you to understand Unit 01 The Solid State properly and you will be able to answer exam questions correctly.
- Latest Exam Pattern: All questions are aligned as per the latest CBSE sample papers and marking schemes.
- Huge Variety of Questions: These Unit 01 The Solid State sets include Case Studies, objective questions, and various descriptive problems with answers.
- Time Management: Solving these Unit 01 The Solid State test papers daily will improve your speed and accuracy.
How to solve Chemistry Unit 01 The Solid State Assignments effectively?
- Read the Chapter First: Start with the NCERT book for Class 12 Chemistry before attempting the assignment.
- Self-Assessment: Try solving the Unit 01 The Solid State questions by yourself and then check the solutions provided by us.
- Use Supporting Material: Refer to our Revision Notes and Class 12 worksheets if you get stuck on any topic.
- Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.
Best Practices for Class 12 Chemistry Preparation
For the best results, solve one assignment for Unit 01 The Solid State on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.
You can download free PDF assignments for Class 12 Chemistry Chapter Unit 01 The Solid State from StudiesToday.com. These practice sheets have been updated for the 2025-26 session covering all concepts from latest NCERT textbook.
Yes, our teachers have given solutions for all questions in the Class 12 Chemistry Chapter Unit 01 The Solid State assignments. This will help you to understand step-by-step methodology to get full marks in school tests and exams.
Yes. These assignments are designed as per the latest CBSE syllabus for 2026. We have included huge variety of question formats such as MCQs, Case-study based questions and important diagram-based problems found in Chapter Unit 01 The Solid State.
Practicing topicw wise assignments will help Class 12 students understand every sub-topic of Chapter Unit 01 The Solid State. Daily practice will improve speed, accuracy and answering competency-based questions.
Yes, all printable assignments for Class 12 Chemistry Chapter Unit 01 The Solid State are available for free download in mobile-friendly PDF format.