CBSE Class–12 Subject Chemistry NCERT SolutionsChapter – 07The p block elements In-text question 1. Why are pentahalides more covalent than trihalides? Ans. In pentahalides, the oxidation state is +5 and in trihalides, the oxidation state is +3. Since the metal ion with a…Read More »
CBSE TEST PAPER 01 CLASS XI CHEMISTRY (The p-Block Elements) General Instruction: All questions are compulsory. Marks are given along with each question. 1. How many groups are there in p-block? [1] 2. What is inert pair effect? [1] 3. How does…Read More »
CBSE Class 11 Chemistry Quick Revision NotesChapter 12Organic Chemistry Some Basic Principles and Techniques General Introduction, Purification and Analysis Classification and IUPAC Nomenclature of Organic Compounds Electronic Displacements in a covalent bond Hemolytic and heterotypic Fission of a covalent Bond Fundamental Concepts…Read More »
CBSE Class 11 Chemistry NCERT SolutionsChapter 12ORGANIC CHEMISTRY – SOME BASIC PRINCIPLES AND TECHNIQUES 1. What are hybridisation states of each carbon atom in the following compounds? Ans. (i) is hybridised.is sp hybridised. (ii) is hybridised.is hybridised.is hybridised. (iii) are hybridised.hybridised. (iv) is hybridised.is hybridised.is sp hybridised. (v) All the 6 carbon atoms in benzene are hybridised. 2. Indicate the bonds in…Read More »
CBSE TEST PAPER 01 CLASS XI CHEMISTRY (Organic Chemistry Some Basic Principle and Techniques) General Instruction: All questions are compulsory. Marks are given alongwith their questions. 1. Write the expanded form of the following condensed formulas into their complete structural formulas.(a) CH3CH2COCH2CH3.(b)…Read More »
CBSE Class 11 ChemistryQuick Revision NotesChapter 13Hydrocarbons Classification Alkanes Alkenes Alkynes Aromatic Hydrocarbon Carcinogenicity and Toxicity Hydrocarbons are the compounds of carbon and hydrogen only. Hydrocarbons are mainly obtained from coal and petroleum, which are the major sources of energy. Petrochemicals are…Read More »
CBSE Class 11 Chemistry NCERT SolutionsChapter 13HYDROCARBONS 1. How do you account for the formation of ethane during chlorination of methane? Ans. Chlorination of methane proceeds via a free radical chain mechanism. The whole reaction takes place in the given three steps. Step…Read More »
CBSE TEST PAPER 01 CLASS XI CHEMISTRY (Hydrocarbons) General Instruction: All questions are compulsory. Marks are given alongwith their questions. 1. Classify the hydrocarbons according to the carbon – carbon bond. [1]2. What are cycloalkanes? [1]3. The boiling point of hydrocarbons decreases…Read More »
CBSE Class 11 Chemistry Quick Revision NotesChapter 14Environmental Chemistry Air, Water and Soil Pollution Chemical Reactions in Atmosphere-smog, acid rain Ozone and Its Reactions, Green house effects and Global warming Strategies to control Environmental Pollution Environmental chemistry plays a major role in…Read More »
CBSE Class XI PHYSICS Revision Notes CHAPTER 7 SYSTEM OF PARTICLES AND ROTATIONAL MOTION Centre of mass Moment of a Force Equilibrium of a rigid body Moment of inertia 1. Ideally, a rigid body is one for which the distances between different…Read More »
