VTU_Notes

WATER POLLUTION – Definition, Contaminated water, diseases caused by water pollution, causes of water pollution.

Water is very essential for the life of all the living organism like humans, plants, animals ec we cannot live without water. Water is the basic need for all. There are many sources of water. Water is our important source of life. Water is called as life liquid. 71% of earth is covered by water. …

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DALTONS ATOMIC THEORY, J.J Thomson Experiment, Characteristics of anode rays, neil bohra’s Experiment, isotopes, Isobars, Isotones

What is Daltons Atomic Theory? Daltons Atomic Theory : Dalton, an English chemist, proposed his atomic theory in 1803. The theory’s main postulates are: Elements are made up of atoms, which are very small individual particals. All atoms of the same element have the same shape, mass, and other properties, but they are not the …

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Atom - Meaning, Definition, History, Type, Structure of atom, isotopes

Atom – Meaning, Definition, History, Type, Structure of atom, Daltons atomic theory, Characteristics of anode rays, Rutherfords model, isotopes.

The indian sage kannada was the first to suggest that all matter is made of very small particals called paranamu. What is an atom?   Atom is a smallest partical which is made up of two or more elements…It is defined as the basic building block of matters. It is also the smallest unit of matter …

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POLLUTION- Meaning, Definition, History, Types, causes and effects of pollution.

POLLUTION- Meaning, Definition, History, Types, causes and effects of pollution.

Meaning: The introduction of harmful materials into the environment is referred to as pollution. Pollutants are the name given to these harmful substances. Pollutants can be both natural and man-made, such as volcanic ash. They can also be caused by human activity, such as factory runoff or trash. Pollutants have a negative impact on the …

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Factors affecting the rate of corrosion – Polarization, Galvanization, Tining

Factors affecting the rate of corrosion Position in the galvanic series: Extent of corrosion depends on the position of metal in emf or galvanic series Zn (E0 =-0.76) corrodes faster than Ni(E0=-0.23) Metals above H2 in emf series get corroded vigorously The more active metal(or higher up in the series) suffers corrosion when two metals …

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Corrosion – Types of Corrosion, Factors affecting rate of corrosion, Area Effect, Corrosion Control & More

Corrosion: Destruction or deterioration of metals by surrounding environment through electrochemical process.Eg: rusting of iron, Green scales formed on copper plates. Electrochemical theory of corrosion:Corrosion can be best explained by taking rusting of iron as an Eg: When a metal like iron is expose to the environment, according to electro chemical theory the following changes …

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Lithium-ion battery (Li-ion Battery) – Principles, Construction, Working etc.,

Li-ion batteries are secondary batteries.1. The battery consists of an anode of Lithium, dissolved as ions, into a carbon.2. The cathode material is made up from Lithium liberating compounds, typically the three electro-active oxide materials,3. Lithium Cobalt-oxide (LiCo )4. Lithium Manganese-oxide (LiMn2 )5. Lithium Nickel-oxide (LiNi) Principle1. During the charge and discharge processes, lithium ions …

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Batteries and super capacitors – Introduction to batteries, charging and discharging, characteristics of batteries, types

BATTERY: Is a device, consisting of two or more galvanic cells connected in series or in parallel or both, that can store chemical energy in the form of actins materials and on demand convert chemical energy into electrical energy. SIZE: from cubic centimeter to cubic decimeter.USES: digital watches, cameras, cars, emergency lighting etc. BASIC CONCEPTS:-The …

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CONVERSION AND STORAGE OF ELECTROCHEMICAL ENERGY: ELECTRODE POTENTIAL AND CELLS

Conversion and Storage of Electrochemical energy: Electrode potential and Cells. An electrochemical cell is a device, which is used to convert chemical energy into electrical energy andvise versa.These electrochemical cells are classified into two types as follows.1) Galvanic or Voltaic cells: These are the electrochemical cells, which converts chemical energy intoelectrical energy.Ex. Daniel cell, Dry …

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PROBLEMS ON BOMB CALORIMETER and BOUYS CALORIMETER WITH SOLUTION/ANSWERS

Before solving the Problems on Bomb Calorimeter and Bouys Calorimeter, have a minute and please checkout the formulaes, derivations on all types of Reformation of Petroleum and also checkout Chemical Energy sources. Problems on BOMB CALORIMETER PROBLEM 1: Calculate calorific value coal samples from the following data.Mass of the coal = 1g.Water equivalent of calorimeter …

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