Qno.1 When NaCl is dissolved in water , the sodium ions get : Ans. Hydrated Qno.2 Alkali metals do not exist in free state in nature , because they are : Ans. Very reactive Qno.3 Which of the following cannot be obtained by electrolytic process: Ans. Sodium carbonate Qno. 4 From Li C’s , ionization … Read more
DEFINITION Kingsley Davis – Leaving a thing or an attitude and adopting another by a society is called social change. MacIver [social change] simply refers to a change in the human relationships. Merrill – Social change means that large number of persons are engaging in activities that differ from those in which they or their … Read more
Qno. Who discovered hydrogen and give the name? Ans. Hydrogen is the lightest element among the known elements. It was first recognized by Cavandish in 1766. Lavoisier gave the name Hydrogen because it is main components of common Water . Hydrogen means water producing gas. As hydrogen is the lightest element. it contain only one proton … Read more
The Cell 1. The microscope was invented by: a. David Janson b. Robert Hooke c. Schleiden d. Schwan 2. The microscope was designed properly: a. Galileo b. Sachwan c. Virchow d. Brown 3.The Cell is Greek word which means: a. Hollow Spaces b.Solid c. Cubiod d. Solid mass 4.The nucleus in … Read more
Screen Elements File Menu: The File tab will bring you into the Backstage View. The Backstage View is where you manage your files and the data about them – creating, opening, printing, saving, inspecting for hidden metadata or personal information, and setting options. Ribbon: An area across the top of the screen that makes … Read more
(Biology) Qno.1 What is the estimated no. Of cells that the human body is Composed of ? Ans.37.2 trillion Qno.2 What is the amount of blood contains in the human body ? Ans.5-6 litters Qno.3 With how many bone’s the human skeletal system is composed of in adult age ? Ans.206 Qno.4 … Read more
Fundamentals of Chemistry Qno.What is Chemistry? Ans. Chemistry is the branch Of science which deals with the Composition properties and structure of matter . And Changes occurs In Mater Qno.Branches of Chemistry? Ans. Chemistry is divided into following main branches 1.Physical Chemistry Physical chemistry is the branch of chemistry which deals with the relationship … Read more
Overview First Generation Computers The period of first generation was from 1946-1959. The computers of first generation used vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit). These tubes, like electric bulbs, produced a lot of heat and the installations used to fuse frequently. Therefore, they were very … Read more
Introduction Of Computer Parts of a computer ¾ If you use a desktop computer, you might already know that there isn’t any single part called the “computer.” A computer is really a system of many parts working together. The physical parts, which you can see and touch, are collectively called hardware. (Software, on the other … Read more