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Computers, IT & Internet Awareness Notes for SSC, IB, IBPS, SBI, RRBs 2019

Computers, IT & Internet Awareness Notes for SSC, IB, IBPS, SBI, RRBs 2019

Computer (Hardware + Software) A computer performs a specified sequence of operations as per the set of instructions (known as programs) given on a set of data (input) to generate desired information (output). Hardware Input Devices Processing Devices Output Devices Storage Devices Keyboard Motherboard Monitor (LED, LCD, CRT) Magnetic Disk Microphone Processor Printer Optical Disk Mouse CPU Speaker Flash Memory Web Camera GPU Plotter Magnetic Tape Touch Screen Network card Projector Light Pen Sound card Joystick Video card Software System…

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Human Circulatory System Notes for SSC CGL, CHSL and Railways

Human Circulatory System Notes for SSC CGL, CHSL and Railways

Human Circulatory System Heart Arteries Veins Blood Blood [Plasma (54%) + WBCs (0.7%) + RBCs (45%) + Platelets] The main functions of blood are to transport oxygen, carbon dioxide, water, nutrients, hormones and waste around the body. Blood also fights infection and regulates temperature. Haemopoiesis: The production of blood cells and platelets, which occurs in the bone marrow. Plasma (Yellowish Liquid) Mostly water (up to 95% by volume) and contains dissolved proteins (6–8%) (i.e.—serum albumins, globulins, and fibrinogen), glucose, clotting…

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Atoms and Molecules NCERT Notes for CBSE Class 9th

Atoms and Molecules NCERT Notes for CBSE Class 9th

Atomic Theories Democritus (470-380 B.C.) [Father of Atomic Theory (early)] He proposed that matter could NOT be divided into smaller pieces forever. He claimed that matter was made of small, hard particles that he called “atomos” Antoine Lavoisier (father of modern chemistry) Laws of Chemical Combination Law of Conservation of Mass: The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reactions, i.e., the total mass of the products is same as…

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Diseases in Humans Notes for SSC CGL, CHSL and Railways

Diseases in Humans Notes for SSC CGL, CHSL and Railways

Disease A disease is a particular abnormal condition that negatively affects the structure or function of part or all of an organism, and that is not due to any external injury. DPT (Diphtheria, Pertussis and Tetanus) is a class of combination vaccines against three infectious diseases in humans. Table of Contents Diseases & Their Agents Viral Diseases Bacterial Diseases Protozoan Diseases Fungal Diseases Worm Diseases Genetic Disorders Cancer Diabetes Nutritional Deficiency Diseases Important Scientists Various Disease and their Agents Agent…

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Notes on Work, Energy and Power NCERT Class 9 for CBSE

Notes on Work, Energy and Power NCERT Class 9 for CBSE

Table of Contents Work Energy Power Work (w) Work is said to be done when a force is applied on a body and the body displaces from its initial position. w = F x s Types of Work (Positive, Negative, Zero) Positive Work Done: When the displacement is in the direction of the force applied. Ex: A boy pulls an object towards himself. Negative Work Done: If the displacement is in the opposite direction of force applied. Ex: When you’re…

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Class 6th NCERT History Complete Notes | SSC | UPSC | IB | Railways

Class 6th NCERT History Complete Notes | SSC | UPSC | IB | Railways

Class 6th NCERT History Complete Notes for competitive government exams such as UPSC CSE, SSC CGL, CHSL, Banking and Railways. History It’s a chronological account of events as they took place in the past. Manuscripts (Latin manu – hand) Usually written on palm leaves or on specially prepared bark of a tree known as birch, which grows in the Himalayas. It dealt with Subjects: religious beliefs & practices, the lives of kings Written in Sanskrit, Prakrit (languages used by ordinary…

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