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Class 11th || Menu
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CBSE Class 11 Sample Papers, Syllabus, Test Papers & NCERT Solutions

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Thermal Properties of Matter Class 11 Physics Chapter 11 Notes

• Heat is the form of energy transferred between two (or more) systems or a system and its surroundings by virtue of temperature difference. The SI unit of heat energy transferred is expressed in joule (J). In CGS system, unit of heat is calorie and kilocalorie (kcal). 1 cal = 4.186 J and 1 kcal […]

Mechanical Properties of Fluids Class 11 Physics Chapter 10 Notes

• Fluids are the sustances which can flow e.g., liquids and gases. It does not possess definite shape. • When an object is submerged in a liquid at rest, the fluid exerts a force on its surface normally. It is called thrust of the liquid. • Pressure The thrust experienced per unit area of the surface […]

Mechanical Properties of Solids Class 11 Physics Chapter 9 Notes

• Inter molecular Force In a solid, atoms and molecules are arranged in such a way that each molecule is acted upon by the forces due to the neighbouring molecules. These forces are known as inter molecular forces. • Elasticity The property of the body to regain its original configuration (length, volume or shape) when […]

Gravitation Class 11 Physics Chapter 8 Notes

• Kepler’s Laws of Planetary Motion Johannes Kepler formulated three laws which describe planetary motion. They are as follows: (i) Law of orbits. Each planet revolves around the sun in an elliptical orbit with the sun at one of the foci of the ellipse. (ii) Law of areas. The speed of planet varies in such […]

Systems of Particles and Rotational Motion Class 11 Physics Chapter 7 Notes

• A rigid body is a body with a perfectly definite and unchanging shape. The distances between all pairs of particles of such a body do not change. • Centre of Mass For a system of particles, the centre of mass is defined as that point where the entire mass of the system is imagined […]

Work, Energy and Power Class 11 Physics Chapter 6 Notes

• Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of applied force. It is measured by the product of the force and the distance moved in the direction of the force, i.e., W = F-S • If an object undergoes […]

Law of Motion Class 11 Physics Chapter 5 Notes

• 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 […]

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 […]

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