# Monthly Archive: November 2020

## The Triangle and its Properties

Solved exercise on triangle and its properties Exercise 1. In ∆PQR, D is the mid-pointof QRPM isPD is  If QM = MR? Solution:PM is altitude.PD is median.No, QM ≠ MR. 2. Draw rough sketches for the following...

## COMMUNITY – GAMES

Summary on community Summary Community has given rise to games to relax and spend free time, people have made games. Games build the relationships among individuals in a community. It provides an opportunity for...

## COMMUNITY

Summary of community Solved exercise of summary of community Summary Group of people living in a specific area is called a community. Members of the community are interdependent on each other for many things....

## ELEMENTS, COMPOUNDS AND MIXTURES

Matters available in nature consist of molecules or compound molecules. When these compound molecules are subdivided, elements are obtained. The smallest unit of the element is called an atom. Depending on the atoms present...

## ACIDS,BASES AND SALTS

In our daily life we make use of variety of substances, they are differ in taste and physical state. The substances may be either acids ,bases or salts. ACIDS  The word acid comes from...

## Triangles and their Types

Summary of Triangles and its Types Solved exercises of Triangles and its Types 9th class mathematics Triangle Triangle is a closed curve made up of three line segments. It has three vertices, sides and...

## Pollution

Summary of pollution Solved exercise of pollution Summary These human as well as natural activities have been continuously bringing about degradation of the environment. Such changes have spoil the quality of the environment thereby...

## Agriculture

Summary of agriculture Solved exercise of agriculture Summary The practice of growing plants on a large scale for food or other purpose is called agriculture.Agriculture is the main occupation of the farmers. So farmers...

## Factors and Multiples

Summary of factors and multiples Solved exercise of factors and multiples Summary Multiplying two whole numbers gives a products. The numbers that we multiply are the factors of the product. Example: 3 × 5 = 15...

## HARD WATER AND SOFT WATER

Summary of hard water and soft water Exercise of hard and soft water Summary Hard Water: If it contains dissolved salts of chlorides, sulphates and bicarbonates of calcium and magnesium. Example: water of some...