Class 12th

Students can refer the NCERT Solutions for Class 12 Chemistry Chapter 4 The d and f block Elements shared by the experts at Shiksha for NCERT Chemisytry textbook questions. The solutions for CBSE Chemistry d and f block questions is explanined in easy way for better understanding.

Students need to practice the Class 12 Chemistry previous year question to identify the important questions. Some of important questions are reactions of $K_2Cr_2O_7$K2? Cr2? O7? and $KMnO_4$KMnO4? in acidic, basic, and neutral medium, lanthanide contraction and its consequences, balancing redox reactions, etc.

Students can use the class 12 previous year d and f block questions pdf to prepare for the exam and self-assessment. NCERT solutions enhace the proble sloving skills by explaning the complex questions in easy way. 

The graphical method in Linear Programmin is a visual approach used to find the optimal solution of questions in Linear Programming. We have provided NCERT Solutions for Class 12 Linear Programming and we have discussed graphical solutions of all the questions in the exercises for Class 12 Math Linear Programming. The constraints in linear programming are treated as coordinate point and equations are plotted on a graph as straight lines, and the region that satisfies all of them is known as the feasible region. and area outside it is considered Infeasible regions.

Shiksha's Class 12 Linear Programming, NCERT Solutions provide clear explanation for the concepts of feasible and infeasible regions;

• A feasible region is the common area on a graph that satisfies all the given constraints of a linear programming problem, including non-negativity conditions.
• An infeasible region comprises points that do not satisfy one or more of the problem's constraints. Any point outside the feasible region is considered an infeasible solution.

Students can use NCERT Solutions to understand the concepts for feasible and infeasible reason in the Linear Programming. 

The fundamental relationship between the resulting electric field and electric charge distribution is given by Gauss's law.
It states that the total electric flux (? E) passing through any closed hypothetical surface (called a Gaussian surface) is equal to 1/?0 times the net electric charge (q enc ) enclosed within that surface.
When dealing with charge distributions that possess a high degree of symmetry such as planar, cylindrical, and spherical, Gauss's law significance lies in providing a powerful alternative method to Coulomb's law for calculating electric fields.
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The quantization of charge can be denoted as e = 1.6 * 10? ¹? C. It means that the object's charge is an integral multiple of the elementary charge. Mathematically, it can be represented as q = ±ne, where n is an integer. The charge exists in discrete packets or quanta and is not continuous. For example, a body cannot have a charge of 2.5e but a charge of 3e or -2e. Millikan first observed this quantization of charge in his oil drop experiment. Quantization is consistent with the matter's atomic structure and is a fundamental property of electric charge.