• Dynamics is the branch of physics in which we study the motion of a body by taking into consideration the cause i.e., force which produces the motion. • Force Force is an external cause in the form of push or pull, which produces or tries to produce motion in a body at rest, or stops/tries […]
CBSE Class 11 Sample Papers, Syllabus, Test Papers & NCERT Solutions
Motion in a Plane Class 11 Physics Chapter 4 Notes
• Motion in a plane is called as motion in two dimensions e.g., projectile motion, circular motion etc. For the analysis of such motion our reference will be made of an origin and two co-ordinate axes X and Y. • Scalar and Vector Quantities Scalar Quantities. The physical quantities which are completely specified by their magnitude […]
Motion in a Straight Line Class 11 Physics Chapter 3 Notes
• Introduction Motion is one of the significant topics in physics. Everything in the universe moves. It might only be a small amount of movement and very-very slow, but movement does happen. Even if you appear to be standing still, the Earth is moving around the sun, and the sun is moving around our galaxy. […]
Units and Measurement Class 11 Physics Chapter 2 Notes
Measurement The process of measurement is basically a comparison process. To measure a physical quantity, we have to find out how many times a standard amount of that physical quantity is present in the quantity being measured. The number thus obtained is known as the magnitude and the standard chosen is called the unit of […]
Physical World Class 11 Physics Chapter 1 Notes
Science Science is a systematic and organised attempt to acquire knowledge about the surroundings through observations, experiments and verifications. Scientific Method Several inter-related steps are involved in scientific method. Some of the most significant steps are as follows: The systematic observations Reasoning Mathematical modelling Theoretical prediction Physics Physics is a fundamental science concerned with understanding […]
Chemistry Notes for Class 11 – All Chapters
Chapter 1 Some Basic Concepts of Chemistry Class 11 Notes Chapter 2 Structure of Atom Class 11 Notes Chapter 3 Classification of Elements and Periodicity in Properties Class 11 Notes Chapter 4 Chemical Bonding and Molecular Structure Class 11 Notes Chapter 5 States of Matter Class 11 Notes Chapter 6 Thermodynamics Chapter 7 Equilibrium Class 11 Notes Chapter 8 Redox Reactions Class […]
Environmental Chemistry Class 11 Chemistry Chapter 14 Notes
• Environmental Chemistry It is the branch of science which deals with the chemical changes in the environment. It includes our surroundings as air, water, soil, forest etc. • Environmental Pollution It is the effect of undesirable changes in our surroundings that have harmful effects on plants, animals and human beings. • Pollutants A substance, […]
Hydrocarbons Class 11 Chemistry Chapter 13 Notes
• Hydrocarbon A compound of carbon and hydrogen is known as hydrocarbon. • Saturated Hydrocarbon A hydrocarbon is said to be saturated if it contains only C—C single bonds. For example: Ethane CH3—CH3 • Unsaturated Hydrocarbon • Aromatic Hydrocarbon Benzene and its derivatives are called aromatic compounds. Example: • Alicyclic Compounds Cyclic compounds which consist […]
Organic Chemistry Some Basic Principles and Techniques Class 11 Chemistry Chapter 12 Notes
• Organic Chemistry Organic chemistry is the branch of chemistry that deals with the study of hydrocarbons and their derivatives. The Shapes of Carbon Compounds: In organic or carbon compounds, s and p orbitals are involved in hybridisation. This leads to y three types of hybridisation which are sp3(in alkanes) – Tetrahedral in shape sp2(in […]
The p-Block Elements Class 11 Chemistry Chapter 11 Notes
• p-Block Elements Elements belonging to groups 13 to 18 of the periodic table are called p-block elements. General electronic configuration: ns2 np1-6 (except for He) • Group 13 Elements: The Boron Family Outer Electronic Configuration: ns2np1 Atomic Radii: The atomic and ionic radii of group 13 elements are smaller than the corresponding elements of alkali and alkaline earth […]
The s-Block Elements Class 11 Chemistry Chapter 10 Notes
• General Electronic Configuration of s-Block Elements For alkali metals [noble gas] ns1 For alkaline earth metals [noble gas] ns2 • Group 1 Elements: Alkali metals Electronic Configuration, ns1, where n represents the valence shell. These elements are called alkali metals because they readily dissolve in water to form soluble hydroxides, which are strongly alkaline […]
Hydrogen Class 11 Chemistry Chapter 9 Notes
• Electronic Configuration of Hydrogen 1s1 Position of hydrogen in the periodic table: Position of hydrogen in periodic table is not justified because it resembles both alkali metals as well as halogens. • Resemblance of Hydrogen with Alkali Metals (i) Electronic Configuration: Hydrogen has one electron in its valence shell like alkali metals. (ii) Both […]
Redox Reactions Class 11 Chemistry Chapter 8 Notes
• Oxidation Oxidation is defined as the addition of oxygen/electronegative element to a substance or rememoval of hydrogen/ electropositive element from a susbtance. For example, • Reduction Reduction is defined as the memoval of oxygen/electronegative element from a substance or addition of hydrogen or electropositive element to a substance. For example, • Redox Reaction in […]
Equilibrium Class 11 Chemistry Chapter 7 Notes
• Chemical Equilibrium In a chemical reaction chemical equilibrium is defined as the state at which there is no further change in concentration of reactants and products. For example, At equilibrium the rate of forward reaction is equal to the rate of backward reaction. Equilibrium mixture: The mixture of reactants and products in the equilibrium state is […]
Thermodynamics Class 11 Chemistry Chapter 6 Notes
• Important Terms and Definitions System: Refers to the portion of universe which is under observation. Surroundings: Everything else in the universe except system is called surroundings. The Universe = The System + The Surroundings. Open System: In a system, when there is exchange of energy and matter taking place with the surroundings, then it is called an […]
States of Matter Class 11 Chemistry Chapter 5 Notes
• Intermolecular Forces Intermolecular forces are the forces of attraction and repulsion between interacting particles have permanent dipole moments. This interaction is stronger than the London forces but is weaker than ion-ion interaction because only partial charges are involved. The attractive forces decrease with the increase of distance between dipoles. The interaction energy is proportional […]
Chemical Bonding and Molecular Structure Class 11 Chemistry Chapter 4 Notes
• Chemical Bond The force that holds different atoms in a molecule is called chemical bond. • Octet Rule Atoms of different elements take part in chemical combination in order to complete their octet or to attain the noble gas configuration. • Valence Electrons It is the outermost shell electron which takes part in chemical […]
Classification of Elements and Periodicity in Properties Class 11 Chemistry Chapter 3 Notes
• Genesis of Periodic Classification Dobereiner’s Triads In 1829, Dobereiner arranged certain elements with similar properties in groups of three in such a way that the atomic mass of the middle element was nearly the same as the average atomic masses of the first and the third elements. A few triads proposed by him are […]