This post includes the most important chemical reactions of Chemistry section which help you to excel in your exams. The reactions are mentioned chapterwise. Chemical Reactions and Equations 1. Pb(NO3)2 + 2 KI → PbI2 + 2KNO3 PbI2 is yellow precipitate formed. This reaction is double displacement reaction or precipitation reaction. 2. CaO + H2O […]
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Here you will find the short notes of carbon and its compound. Carbon is an important constituent of the foods, fuels, household and commercial articles, textile fabrics, perfumes, explosives, dyes, war gases etc. The Earth’s crust has only 0.02% carbon in the form of minerals (like petroleum, coal, carbonates and hydrogen carbonates) and the atmosphere
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Metal and Non-metal question answer are provided in this post including NCERT questions also. 1. Give an example of a metal which :(i) is a liquid at room temperature.(ii) can be easily cut with a knife.(iii) is the best conductor of heat.(iv) is a poor conductor of heat. Answer: (i) Mercury(ii) Sodium(iii) Silver(iv) Lead 2.
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The short notes for the chapter Metals and Non-metals are as follows: Metals and Non Metals There are 92 well known naturally occurring minerals of which 70 are metals and rest 20 are the non-metals. Physical Properties of Metals and Non Metals Property Metals Non-Metals Luster They have shining surface. They do not have shining
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Acids Bases and Salts question answers are provided in this post including NCERT questions also. 1. You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify
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The short notes for the chapter Acids Bases and Salts are as follows: Acids Acids are the one which: Produce [H+] in H2O Has sour taste Turns blue litmus red Acts as electrolyte in solution Chemical Properties Of Acids Acids + Metal → Salt + H2e.g., H2SO4 + Zn → ZnSO4 + H2 Acids + Metal Carbonate/Metal
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Chemical Reactions and Equations question answer are provided in this post including NCERT questions also. Why should a magnesium ribbon be cleaned before burning in air ? Answer: Magnesium gets covered with a layer of magnesium oxide when kept in air for a long time. This layer hinders the burning of magnesium. Hence, it is
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The short notes for the chapter Chemical Reaction and Equation are as follows: The representation of chemical reaction by means of symbols of substances in the form of formulae is called chemical equation.For example N2 + 3H2 ⇌ 2NH3 A balanced chemical equation has equal number of atom of each element participating in the reaction on both
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