To help students access the accurate solutions to all NCERT Exemplar problems of class 12 Chemistry, our experts have solved all the questions in detail but simple language.
Here we are providing the NCERT Exemplar solutions for CBSE Class 12 Chemistry chapter 1, Solid State. All these solutions have been prepared by the subject experts and have been revised to bring the accurate study material for our students. These solutions have been collated in the form of PDF which students can download for free of cost and refer the same when required.
Few problems along with their solutions from this chapter are given follows:
Q. Which of the following is not a characteristic of a crystalline solid?
(a) Definite and characteristic heat of fusion
(b) Isotropic nature
(c) A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal
(d) A true solid
Ans. (b) Isotropic nature
Crystalline solid is anisotropic in nature as this solid shows different physical properties such as electrical resistance, refractive index in different directions.
Q. A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because
(a) all the domains get oriented in the direction of magnetic field
(b) all the domains get oriented in the direction opposite to the direction of magnetic field
(c) domains get oriented randomly
(d) domains are not affected by magnetic field
Ans. (a) all the domains get oriented in the direction of magnetic field
When a ferromagnetic substance is placed in a magnetic field it becomes a permanent magnet because all the domains get oriented in the direction of magnetic field even after removal of applied magnetic field.
Q. Which of the following statements are true about semiconductors?
(a) Silicon doped with electron rich impurity is a p -type semiconductor
(b) Silicon doped with an electron rich impurity is an n-type semiconductor
(c) Delocalised electrons increase the conductivity of doped silicon
(d) An electron vacancy increases the conductivity of n-type semiconductor
Ans. (b, c)
Silicon doped with an electron rich impurity is an n-type semiconductor. Conductivity of n-type semiconductor is due to presence of free electron delocalisation of electrons. This increases the conductivity of doped silicon due to increase in mobility of electrons.
Find below the links to download Class 12 Chemistry NCERT Exemplar Solutions for chapter 1- Solid State:
Link to Download PDF
Multiple Choice Questions (Type-I)
Multiple Choice Questions (Type-II)
Short Answer Type Questions
Matching Columns Type Questions
Assertion and Reason Type Questions
Long answer types questions
Class 12 Chemistry NCERT Exemplar Problems:
The NCERT Exemplar problems are considered to be the most applicative kind of problems which help to enhance a student’s critical thinking and problem solving ability. These problems form the best practice source to prepare effectively for board exams and the Engineering entrance tests. So, it’s very important for students to practice the NCERT exemplar problems to prepare well for the boards and the competitive exams.
Here, we are providing the NCERT Exemplar Problems for Class 12 Chemistry chapter - Solid State, in the PDF form which students may download and solve them to analyse their preparedness for the exams.
Download the complete NCERT Exemplar book from the following link:
Note: Once you are done with all the NCERT Exemplar problems, refer the solutions given above in this article to check the correctness of your own solutions and know the right way to get the perfect answers.