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CBSE Class 12 Chemistry exam on Feb 27 things to revise

Practice solving problems from NCERT textbooks and other reliable sources. Focus on understanding the concepts rather than just memorizing formulas and equations. Develop a study routine that includes regular practice and review.

Optimizing Readiness for Chemistry Exams

Understanding the Fundamentals

Revisiting each chapter to reinforce fundamental concepts is a crucial step in optimizing readiness for chemistry exams. This involves reviewing the key concepts, formulas, and equations that are essential to understanding the subject.

Introduction

Understanding Polymers

Polymers are large molecules composed of many repeated subunits, known as monomers. These monomers can be derived from various sources, including natural materials, such as cellulose, proteins, and waxes, as well as synthetic materials, like plastics and fibers. The diversity of polymers is vast, and their properties can vary significantly depending on the type of monomer, the type of linkage, and the overall structure.

Nomenclature

Classification of Polymers

Polymers can be classified into several categories based on their structure and properties. Some of the main categories include:

  • Natural Polymers: These are polymers derived from natural sources, such as cellulose, proteins, and waxes. Examples include cellulose, collagen, and keratin. * Synthetic Polymers: These are polymers produced through chemical reactions, such as polymerization.

    Introduction

    The periodic table is a fundamental tool in chemistry, and understanding its elements is crucial for any aspiring chemist. One of the most fascinating and complex sections of the periodic table is the transition series, which includes the lanthanoids and actinoids. In this article, we will delve into the world of lanthanoids and actinoids, exploring their unique characteristics, the lanthanoid contraction, and how to practice questions in the NCERT textbook and Exemplar.

    Lanthanoids

    The lanthanoids are a series of 15 elements with atomic numbers ranging from 57 to 71. They are also known as the inner transition metals.

  • *Pre-Exam Preparation
  • Pre-Exam Preparation: A Key to Success

    Arriving at the examination centre with a clear mind and a well-planned strategy is crucial for success. Pre-exam preparation is essential to ensure that you are well-equipped to tackle the examination. Here are some key steps to follow:

  • Create a study plan: Develop a study plan that covers all the topics and sections of the examination. Allocate specific time slots to each section based on marks distribution.

    — Clearly label each answer with the correct question number to avoid confusion. — Present answers in bullet points and underline key words. — Writing balanced chemical equations and drawing necessary structures, such as resonance forms, is crucial. — Always include appropriate units in numerical answers to ensure completeness. — Aim to complete the paper 15 minutes before the stipulated time and revise the answer sheet. (The author is from Shiv Nadar School, Faridabad)

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