Basic chemistry

 Which of the following compounds is NOT a polymerization product of alpha-D-glucose, a) amylose b) cellulose c) glycogen d) amylopectin? The correct answer is b) cellulose. Amylose, glycogen, and amylopectin are all polymerization products of alpha-D-glucose. Amylose is a linear polymer of alpha-D-glucose units connected by alpha-1,4-glycosidic bonds. It forms a helical structure and is a component of starch. Glycogen is a highly branched polymer of alpha-D-glucose units connected by alpha-1,4-glycosidic bonds with alpha-1,6-glycosidic branch points. It serves as a storage form of glucose in animals and humans. Amylopectin is also a branched polymer of alpha-D-glucose units connected by alpha-1,4-glycosidic bonds with alpha-1,6-glycosidic branch points. It is the major component of starch and has a more highly branched structure than glycogen. Cellulose, on the other hand, is a polymer of beta-D-glucose units connected by beta-1,4-glycosidic bonds. It is not a product of the polym...

Demystifying Molar: Understanding the Concept and Its Significance Introduction: In the field of chemistry, the concept of the mole, often referred to as "molar," serves as a fundamental unit of measurement. The molar is a crucial concept that allows scientists to quantify and understand the relationships between atoms, molecules, and reactions. In this blog, we will delve into the fascinating world of moles, exploring their definition, significance, and applications in various aspects of chemistry. What is a Molar? Simply put, a molar is a unit of measurement used in chemistry to quantify the amount of a substance. It provides a bridge between the microscopic world of atoms and molecules and the macroscopic world of everyday measurements. The molar is defined as the amount of a substance that contains as many entities (atoms, molecules, ions, etc.) as there are atoms in exactly 12 grams of carbon-12. This definition is based on Avogadro's number, which is approximately 6...

Unveiling the Science Behind Washing Powders: Insights from a Chemist Introduction: In our everyday lives, we encounter numerous challenges, and one that most of us can relate to is laundry. The quest for cleaner, fresher, and more vibrant clothes has led to the development of various laundry detergents, including the ever-popular washing powders. As a chemist, I find the science behind these powders fascinating. In this blog, we will delve into the intricate world of washing powders, exploring their composition, working mechanisms, and the chemical reactions that make them effective . 1. Composition of Washing Powders: Washing powders are complex mixtures of chemicals carefully formulated to remove dirt, stains, and odors from fabrics. The composition of washing powders typically includes the following key components:  a. Surfactants:  These are the primary cleansing agents in washing powders. Surfactants contain both hydrophilic (water-attracting) and lipophilic (oil-attract...

 Understanding Molar Concentration: A Key Concept in Chemistry Chemistry is the science that deals with the properties, structure, and composition of matter. One crucial concept in chemistry is molar concentration, which plays a crucial role in many chemical calculations, including stoichiometry, dilution, and reactions. In this blog post, we will delve into the fundamentals of molar concentration and explore its significance in chemical reactions and laboratory experiments. What is Molar Concentration? Molar concentration, also known as molarity, is a measure of the amount of solute dissolved in a given volume of solution. It is defined as the number of moles of solute per liter of solution and is denoted by the symbol "M." The molar concentration of a solution is determined by dividing the number of moles of solute by the volume of the solution in liters. The formula for molarity is Molarity (M) = moles of solute / volume of solution (in liters) For example, if you dissolve...

 The National Eligibility cum Entrance Test (NEET): An In-depth Guide to India's Premier Medical Entrance Examination Introduction: The National Eligibility cum Entrance Test (NEET) is a highly competitive and widely recognized entrance examination in India for admission into undergraduate medical and dental programs. Introduced in 2013 by the Government of India, NEET has become the sole medical entrance examination for admissions to MBBS (Bachelor of Medicine, Bachelor of Surgery) and BDS (Bachelor of Dental Surgery) programs offered by medical and dental colleges across the country. In this comprehensive guide, we will delve into the details of NEET, including its eligibility criteria, exam pattern, preparation strategies, and significance in the field of medical education in India. Eligibility Criteria for neet : To appear for NEET, candidates must fulfill the eligibility criteria set by the National Testing Agency (NTA), which is the conducting body for the exam. The key eligi...

Unveiling the Truth about Adulterated Food: Causes, Impacts, and Ways to Protect Yourself   Introduction: As consumers, we rely on the food we consume to be safe and nutritious. However, the harsh reality is that not all food products are as pure as they seem. Adulterated food, which refers to food that has been tampered with or contaminated with harmful substances, is a concerning issue that affects millions of people around the world. In this blog post, we will delve into the causes, impacts, and ways to protect yourself from adulterated food, shedding light on this critical topic. Causes of Adulteration in Food: Adulteration in food can occur at various stages of the food supply chain, from production to distribution to storage. There are several reasons why food becomes adulterated, including: Economic Gain : One of the main drivers of food adulteration is the pursuit of profit. Adding cheap or harmful substances to food allows unscrupulous individuals or entities to increase t...

  Ultimate Guide to Download JEE Mains Session 2 Admit Card 2023: Step-by-Step Instructions JEE Main 2023 Session 2 Admit Card Released; Check Direct Link The National Testing Agency (NTA) has issued the JEE (Joint Entrance Examination) Mains session 2 admit card 2023 today, April 3, 2023. The candidates registered to appear in the exam will have to log on to jeemain.nta.nic.in to download their hall tickets. Direct Link to Download the Admit Card To access and download the hall ticket, the candidates will be required to enter their application number and date of birth on the official website. The NTA has released the admit card for the second session of JEE 2023 exams, scheduled to begin from April 6. The NTA will hold the exams on April 6, 8, 10, 11 and 12, 2023, respectively. The exams will take place in the computer-based (online) mode. JEE Mains Session 2 Admit Card 2023: Steps to Download Candidates about to take the JEE Mains session 2 exams 2023 will be required to follow t...

 The Heat is On: Understanding the Significance of Melting Points Melting point  What is Melting point  Melting point is a fundamental physical property of a substance, which is defined as the temperature at which a solid substance transforms into a liquid state at atmospheric pressure. This is a critical property because it can be used to identify a pure substance, to determine its purity, and to understand its behavior under varying conditions of temperature and pressure. Melting point is a characteristic property of a substance, which means that it is unique to that substance and does not depend on the size or shape of the sample. However, the melting point may vary slightly depending on the conditions under which the measurement is taken, such as the rate of heating, the size of the sample, and the purity of the substance. Therefore, the melting point of a substance is usually reported as a range of temperatures rather than a single value. The melting point of a subst...

Chemistry 101: A Beginner's Guide to Understanding the World Around Us Chemistry  What is Chemistry ? Chemistry is the study of matter and its properties, composition, and interactions with other substances. It is a fundamental science that encompasses a wide range of topics, from the behavior of atoms and molecules to the reactions that occur in living organisms. Chemistry is the foundation of modern technology and plays a critical role in fields such as medicine, engineering, and materials science. At its core, chemistry is concerned with understanding the structure and behavior of matter at the atomic and molecular level. Chemists study the properties of elements, the structure of molecules, and the forces that govern chemical reactions. They also investigate the behavior of matter under different conditions, such as temperature, pressure, and concentration. One of the key aspects of chemistry is the concept of the chemical bond, which is the force that holds atoms together in m...

A Step-by-Step Guide to JEE Main 2023 Session 2 Registration Process JEE Main 2023 Session 2 : Registration Link Active at jeemain.nta.nic.in; How to Apply, Direct Link The National Testing Agency (NTA) has begun the Joint Entrance Examination (JEE) Main 2023 session 2 registration. JEE Mains second attempt registration link is active now on the official website jeemain.nta.nic.in . Aspiring candidates will be able to register for the JEE Main 2023 session 2 exams through the login window. Apply for online registration  Click here   NTA will conduct the JEE Main 2023 session 2 examinations on April 6, 8, 10, 11, and 12. "The dates of advance intimation of examination city, downloading of admit cards, and declaration of result will be displayed on JEE (Main) portal in due course," NTA said in an official notice earlier. The official notice  You can download the official notice you this  Click here   How to fill JEE Main 2023 Application Fo...

Name Reactions in Organic Chemistry: A Key to Understanding Reaction Mechanisms Name reaction of organic chemistry  name reaction, name reactions in organic chemistry class 12, name reactions in organic chemistry, name reaction j chemistry, name reaction of haloalkanes and haloarenes, name reaction of alcohol phenol and ether, name reactions chem academy, name reaction trick, name reaction class 12, name reactions in organic chemistry class 12 physics wallah, name reaction organic chemistry, name reaction class 12 organic chemistry, name reaction aldehyde ketone carboxylic acid, name reaction and rearrangement, name reaction and m echanism, all name reaction All Named reaction in organic chemistry class 12,   All Named reaction in organic chemistry for neet, All Name reaction in organic chemistry for jee, Named reaction in organic chemistry Markownikoff's reaction  All Named reaction in organic chemistry class 12,   All Named reaction in organic chemistry ...

HOW TO SOLVE  NUMERICAL PROBLEMS IN CHEMISTRY OR PHYSICS   In this post we will see how to solve numericals problems in chemistry or physics? This video will explain you in detail that how to solve numericals problems in chemistry or physics. This video will teach you about how to solve numericals problems in chemistry  This video also teaches you about how to solve numericals problems in physics  How to solve numericals problems? Step 1 : Learn the formula. Step 2 : Learn the concept of formula. For example  this formula is of 11th std of chemistry  PV=nRT  In this formula Learn about that in this formula  What is P? What is V? What is n? What is R?  What is T  Here  P is the pressure  V is the volume  n is the number of mole  R is the gas constant  T is the temperature  Step 3: Do the easy solved examples given in the textbook or any book which you prefer. If you can not solve the given problem by own then...

 COMPOUNDS OF ALKALI METALS  1. Sodium (Na) , Natrium  Extraction of sodium  : Down's Process  By Electrolysis of fused NaCl + CaCl 2 + NaF  At cathode (Iron Vessel) : Na+ +e– ⟶  Na(s)  At Anode (Graphite) : 2Cl–   →    Cl 2 + 2e–  (i) (CaCl 2 + NaF) is used to lower Melting point (8000 C) of NaCl to about 6000 C.  (ii) Aqueous sodium chloride cannot be used for preparing sodium by electrolysis. Because instead of metallic sodium, hydrogen gas will be liberated at cathode. Properties sodium , Natrium (i) sodium is a crystalline soft metal.  (ii) Highly reactive, so kept in kerosene.  (iii) Na dissolves in liquid NH3 to give blue solution.  Uses of sodium , natrium  (i) In the preparation of sodium amalgam (used as reducing agent)  (ii) In sodium vapour lamp, which emits monochromatic yellow light.  (iii) As heat transfer medium in nuclear reactors. 2. Sodium chloride NaCl Occ...

 ALKALI METAL  Alkali Metal are   lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr) 1.Physical state of alkali metal  One electron in outermost shell & General formula ns¹.   Francium is radioactive element.  All are silvery white.  Light soft, malleable and ductile metals with metallic lustre.   Alkali metals are paramagnetic, diamagnetic and colourless in form of ions. 2.Atomic size of alkali metal  Biggest in their respective period (except noble gas element)  Size increases from Li to Fr due to addition of an extra shell.  Li < Na < K < Rb < Cs < Fr 3. Softness of alkali metal  Alkali metals are soft because of-  (i) Large atomic size  (ii) BCC crystal structure (HCP in Li)  (iii) Loose packing (68% packing efficiency)  (iv) Weak metallic bond  Cs is the softest metal in s-block 4. Melting point and boiling point of alkali metal...