CBSE Class 10 Chemistry Periodic Classification of Elements MCQs

Question : Which of the given elements A, B , C, D and E with atomic numbers 2, 4, 8, 10 and 18 respectively belong to the same period? a) B,C,D b) A, B, C c) A,D,E d) B,D,E Answer :  B,C,D   Question : Which of the following elements would accept an…

CBSE Class 9 Chemistry Matter In Our Surroundings MCQs

  Question: When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment: (a) Air is heavier than bromine (b) Both air and bromine…

CBSE Class 11 Chemistry Thermodynamics Notes Set F

IMPORTANT POINTS OF THERMODYNAMICS 1. Thermodynamics: Science which deals with study of different forms of energy and quantitative relationship. 2. System & Surroundings: The part of universe for study is called system and remaining portion is surroundings. 3. State of…

CBSE Class 11 Chemistry States Of Matter Notes Set E

Important points 1. Change in state : It is over all effect of Intermolecular forces, molecular Interactional energy & thermal energy: 2. Measurable properties of gases : P,V, T, n, Viscosity, specific heat are some measurable properties. 3. Gas Laws : The quantitative…

CBSE Class 11 Chemistry The S Block Element Notes Set D

Important points √Groups (1 & 2) belong to the s-block of the Periodic Table. √Group 1 consists of : lithium, sodium, potassium, rubidium, caesium and francium and collectively known as the alkali metals. √Group 2 include : beryllium, magnesium,calcium, strontium, barium…

CBSE Class 11 Chemistry Redox Reactions Notes Set D

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CBSE Class 11 Chemistry The P Block Elements Notes Set C

CLASS: 11 CHAPTER 11: THE P-BLOCK ELEMENTS IMPORTANT POINTS:  p-block elements: last electron enters outermost p-orbital  6 groups (Gp 13-18)  General electronic configuration: ns2np6  Inert pair effect: Reluctance of the s-electrons of the valence shell to take part in…

CBSE Class 11 Chemistry Organic Chemistry Notes Set C

Tetravalency of carbon carbon is always tetracovalent, i.e. it forms 4 covalent bonds with other atoms C Due to tetravalency of carbon it has a tetrahedron shape. Catenation- The self linking property of carbon is known as catenation. Classification of organic compound.…

CBSE Class 11 Chemistry Hydrogen Notes Set D

CBSE Class 9 Chemistry-Hydrogen. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the…

CBSE Class 11 Chemistry Hydrocarbon Notes Set C

  Please click the link below to download pdf file for CBSE Class 9 Chemistry-Hydrocarbons

CBSE Class 11 Chemistry Equilibrium Notes Set E

  IMPORTANT QUESTIONS CHAPTER‐ EQUILIBRIUM  1. Equilibrium constant helps in predicting the direction in which a given reaction will proceed at any stage.  a) In which one of the following conditions a chemical reaction Proceeds in the forward direction?  i) QC < KC ii) QC…

CBSE Class 11 Chemistry Environmental Chemistry Notes Set D

CBSE Class 9 Chemistry-Environmental chemistry. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern…

CBSE Class 11 Chemistry Classification Of Elements And Periodicity In Properties Of Elements Notes Set C

CBSE Class 9 Chemistry-Classification Of Elements And Periodicity In Properties Of Elements. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached…

CBSE Class 11 Chemistry Basic Concepts Of Chemistry Notes

IMPORTANT POINTS OF SOME BASIC CONCEPTS OF CHEMISTRY 1. Metric System was based on the decimal system.The International System of Units (SI)The International System of Units (in French Le Systeme International d’Unites–abbreviated as SI) was established by the 11th General…

CBSE Class 9 Chemistry Structure Of Atom Worksheet Set C

  CBSE Class 9 Chemistry Worksheet - Structure of Atom (2) Worksheets have become an integral part of the education system. Worksheets are very critical for every student to practice his/ her concepts. Students, teachers and parents can download all CBSE educational…