Chemistry Notes For SSC CGL / CHSL Exam 2019-20 on : Avogadro number
A principle stated in 1811 by the Italian chemist Amadeo Avogadro (1776-1856) that equal volumes of gases at the same temperature and pressure contain the same number of molecules regardless of...
Economics Notes For SSC CGL / CHSL Exam 2019-20 on : Economics: Its Sub...
There are four main divisions of economics.They are consumption, production, exchange and distribution. In modern times, economists add one more division and that is public finance.
Consumption
Human wants coming under...
Physics Notes For SSC CGL / CHSL Exam 2019-20 on : Uniform and Non...
Uniform Motion
In Physics, uniform motion is described as the motion, wherein the velocity (i.e. speed and direction) of the body travelling in a straight line remains constant. When the distance travelled...
Chemistry Notes For SSC CGL / CHSL Exam 2019-20 on : Mole concept
Atoms and molecules are too small to count. To solve this problem their numbers are expressed in terms of Avogadro’s number (NA = 6.023 1023). Mole is the number equal to...
Economics Notes For SSC CGL / CHSL Exam 2019-20 on : Economics: Its Methods,...
An economic theory derives laws or generalizations through two methods:
(1) Deductive Method and
(2) Inductive Method.
Deductive Method of Economic Analysis
It is also named as analytical or abstract method. It consists in deriving...
Physics Notes For SSC CGL / CHSL Exam 2019-20 on : Distance and Displacement
Distance
We define distance as a scalar expression; that implies how much area is covered by an object while travelling from one location to another. As a scalar measure, it takes into...
Chemistry Notes For SSC CGL / CHSL Exam 2019-20 on : Molecular mass
Definition of molecular mass : the mass of a molecule that is equal to the sum of the masses of all the atoms contained in the molecule
First Known Use of molecular...
Economics Notes For SSC CGL / CHSL Exam 2019-20 on : Scope of Economics
The nature and scope of economics are related to the study of wealth or human behaviour or of scarce resources. The scope is very wide and includes the subject matter of...
Physics Notes For SSC CGL / CHSL Exam 2019-20 on : Motion
In science, motion is defined as a change in position. An object’s position is its location.
MOTION ALONG A STRAIGHT LINE
If an object changes its position with respect to its surroundings with time, then...
Chemistry Notes For SSC CGL / CHSL Exam 2019-20 on : Atomic masses
The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is...
