Skip to main content

Posts

Showing posts from August 19, 2021
Customer Feedback Name: E-mail: Please type in your feedback

Important Points of Chemical Reaction

Important Points of Chemical Reaction *Chemical reaction involve breaking of old bonds and formation of new bonds. *To equalise the number of atoms, we cannot alter the formulae of the compounds or element involved in the reactions. This is a partly balanced equation as the number of oxygen are not balanced. *The reaction between calcium oxide with water to form slaked lime is used for white washing walls. The reaction taking place is: *The reaction between most metals and acids is also a displacement reaction as the metal displaces hydrogen from the acid. . *The hydrogen gas is collected by the downwards displacement of water as it is lighter then water. Moreover, it is also insoluble in water. *A physical change does not produce a new substance although the initial and final substance appear different and it is reversible. *During a chemical change, the chemical composition of the substance change and new substance with new properties are formed. Energy is either and it is irreversib

Popular posts from this blog

Civics Chapter 1 notes

Class 10 chapter 15 Exercise 15.1 Solution HMP Class

Class 10 biology chapter 1 notes

Short Question Answers from ‘A Letter to God’

Short Question Answers from ‘A Letter to God’ Q1. Explain the qualities of the post-office employees. Ans. The post office employees represented the people who believed in helping others. They were kind and  helpful. They cooperated with each other and contributed to their best of the capability just to keep Lencho’s  faith in God alive. They had love, concern, compassion and empathy for Lencho. Q2. Why would you not agree with Lencho calling the post office employees ‘a bunch of crooks’? Ans. Lencho was not at all justified in calling the post office employees ‘a bunch of crooks’ because they helped  him by collecting money when his crops were destroyed by hailstorm. Q3. Why was Lencho angry when he received the letter? Ans. When Lencho received the letter, he opened the envelope. He, at once, became angry as he counted the  money in it. There were only seventy pesos whereas he had asked for hundred pesos. He suspected that the  post office employees had stolen the rest of the money.

Class 10 english A latter to god

4 5 6 7 8

Class 10 Science Chapter 1 notes HMP Class

Science Chapter 2 Chemistry S Chand School

Term 1 CBSE Class 10 Mathematics Objective Questions Bank with assertion-reason MCQs ADDED