This chapter tells us about the importance of chemistry in agriculture and food, health and sanitation, saving the environment, and application in industry. We understand about matter and the physical and chemical classification of matter. There are some laws of chemical combinations that we study in this chapter. The solutions for this chapter by Ekal Shiksha contain detailed answers to all NCERT questions.
This chapter tells us about the discovery of electron, proton, and neutron and their characteristics. The Thomson, Rutherford, and Bohr atomic models are described in this chapter. We understand the important features of the quantum mechanical model of an atom. Having understood this chapter thoroughly, we will be able to write the electronic configurations of atoms. The NCERT solutions by Ekal Shiksha can help you with solving the back exercise questions given in this chapter.
Since there are many elements present in the nature, we need a periodic classification of elements. This chapter tells us how they were classified on the law of triads earlier, then came the law of octaves, and then the periodic law as we know it today. We understand the nomenclature of elements with atomic numbers less than 100 and more than 100. Check out the solutions for this chapter by Ekal Shiksha.
In the beginning of the chapter we understand the Kossel-Lewis approach to chemical bonding, under which we understand the octet rule covalent bond, and formal charge. Then we study about ionic or equivalent bonds, the valence bond theory, hybridisation, molecular orbital theory, and hydrogen bonding. The NCERT solutions by Ekal Shiksha can help you with solving the back exercise questions given in this chapter.
This chapter explains to us the existence of different states of matter such as gases and liquids. There are some laws that govern the behavior of ideal gases that we study in this chapter. We understand the application of these laws in real life situations. After studying this chapter, we will be able to differentiate between the gaseous state and vapors. The solutions for this chapter by Ekal Shiksha help you to easily solve the questions given in the back exercise of the chapter.
This chapter introduces us to certain thermodynamic terms that are commonly used, we also understand the applications of these terms in chemistry. The first law of thermodynamics and its mathematical application is explained. There is also the Hess’s law of constant heat summation that we study. We learn to differentiate between extensive and intensive properties and explain entropy as a thermodynamic state function. Check out the solutions for this chapter by Ekal Shiksha.
This chapter is about chemical equilibrium. The topics under this chapter are equilibrium in physical processes, and chemical processes, dynamic equilibrium, law of chemical equilibrium and equilibrium constant, homogeneous equilibrium, heterogeneous equilibrium, and applications of equilibrium constants. Check out the solutions for this chapter curated by experts at Ekal Shiksha.
In chemistry, we learn about a number of reactions and one important category of reactions is redox reactions. The classical idea of redox reactions means oxidation and reduction reactions. Through this chapter, we study redox reactions in terms of electron transfer reactions, oxidation number, redox reactions, and electrode processes. The solutions for this chapter by Ekal Shiksha have detailed answers to NCERT questions.
Hydrogen is the first element in the periodic table, and in this chapter, we study all about hydrogen, its occurrence, the isotopes of hydrogen, properties of Dihydrogen, its uses, hydrides, the physical and chemical properties of water. The solutions for this chapter by Ekal Shiksha will aid you to have a thorough understanding of the concepts, and easily solve the questions related to this chapter.
This chapter is about the S block of the periodic table. There are two groups that belong to the S block. We study the group one elements: alkaline metals, their chemical properties, uses, general characteristics of their compounds, and group 2 elements: alkaline earth metals, their physical properties, general characteristics, and important compounds. The solutions for this chapter by Eka Shiksha have detailed answers to NCERT questions given in the back exercise.
This chapter is about the P block elements of the periodic table, and there are six groups of P block elements. In this chapter, we study about only two of those groups, the boron family and the carbon family. Electronic configuration, physical properties, chemical properties, and important compounds of each of the groups are mentioned in the chapter. Check out the solutions for this chapter by Ekal Shiksha which have detailed answers to NCERT questions.
This chapter gives us a general introduction to the organic chemistry. We understand the Tetra valence of carbon, structural representation of organic compounds, classification of organic compounds, the nomenclature of organic compounds, isomerism, methods of purification of organic compounds, and qualitative analysis of organic compounds. The solutions for this chapter by Ekal Shiksha have detailed answers to NCERT questions along with diagrammatical representations.
Hydrocarbons can be classified as saturated, unsaturated and aromatic. We study about alkanes which are saturated, open chain hydrocarbons, alkenes which are unsaturated hydrocarbons, alkynes which are also unsaturated hydrocarbons, aromatic hydrocarbons, and carcinogenicity and toxicity. The solutions for this chapter by Ekal Shiksha have detailed answers to questions given in the back exercise of the chapter.
In this chapter we understand the meaning of environmental chemistry. This chapter defines atmospheric pollution lists reason for global warming, greenhouse effect and acid rain, give reasons for water pollution, and tells us the international standards for drinking water. The policies which we can adopt for control of environmental pollution are also suggested in this chapter. Check out the solutions for this chapter by Ekal Shiksha which have detailed answers to NCERT questions.