NCERT Class 12 Chemistry Answers and Solutions
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NCERT Class 12 Chemistry Polymers
Do you think that daily life would have been easier and colourful without the discovery and varied applications of polymers? The use of polymers in the manufacture of plastic buckets, cups and saucers, children’s toys,packaging bags, synthetic clothing materials, automobile…
NCERT Class 12 Chemistry Haloalkanes and Haloarenes
The replacement of hydrogen atom(s) in a hydrocarbon, aliphatic or aromatic, by halogen atom(s) results in the formation of alkyl halide (haloalkane) and aryl halide (haloarene), respectively. Haloalkanes contain halogen atom(s) attached to the sp3 hybridised carbon atom of…
NCERT Class 12 Chemistry Chemistry in Everyday Life
By now, you have learnt the basic principles of chemistry and also realised that it influences every sphere of human life. The principles of chemistry have been used for the benefit of mankind. Think of cleanliness — the materials like soaps, detergents, household bleaches,…
NCERT Class 12 Chemistry Biomolecules
A living system grows, sustains and reproduces itself. The most amazing thing about a living system is that it is composed of non-living atoms and molecules. The pursuit of knowledge of what goes on chemically withina living system falls in the domain of biochemistry. Living…
NCERT Class 12 Chemistry Amines
Amines constitute an important class of organic compounds derived by replacing one or more hydrogen atoms of ammonia molecule by alkyl/aryl group(s). In nature, they occur among proteins, vitamins, alkaloids and hormones. Synthetic examples include polymers, dyestuffs and…
NCERT Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids
In the previous Unit, you have studied organic compounds with functional groups containing carbonoxygen single bond. In this Unit, we will study about the organic compounds containing carbon-oxygen double bond (>C=O) called carboxyl group, which is one of the most important…
NCERT Class 12 Chemistry Alcohols Phenols and Ethers
You have learnt that substitution of one or more hydrogen atom(s) from a hydrocarbon by another atom or a group of atoms result in the formation of an entirely new compound having altogether different properties and applications. Alcohols and phenols are formed when a…
NCERT Class 12 Chemistry The Solid State
We are mostly surrounded by solids and we use them more often than liquids and gases. For different applications we need solids with widely different properties. These properties depend upon the nature of constituent particles and the binding forces operating between them.…
NCERT Class 12 Chemistry The P Block Elements
In Class XI, you have learnt that the p-block elements are placed in groups 13 to 18 of the periodic table. Their valence shell electronic configuration is ns2np1–6 (except He which has 1s2 configuration). The properties of p-block elements like that of others are greatly…
NCERT Class 12 Chemistry The d and f Block Elements
The d-block of the periodic table contains the elements of the groups 3-12 in which the d orbitals are progressively filled in each of the four long periods. The elements constituting the f -block are those in which the 4 f and 5 f orbitals are progressively filled in the…
NCERT Class 12 Chemistry Surface Chemistry
Surface chemistry deals with phenomena that occur at the surfaces or interfaces. The interface or surface is represented by separating the bulk phases by a hyphen or a slash. For example, the interface between a solid and a gas may be represented by solid-gas or solid/gas. Due…
NCERT Class 12 Chemistry Solutions
In normal life we rarely come across pure substances. Most of these are mixtures containing two or more pure substances. Their utility or importance in life depends on their composition. For example, the properties of brass (mixture of copper and zinc) are quite different from…
NCERT Class 12 Chemistry Logarithms
Please refer to attached file for NCERT Class 12 Chemistry Logarithms