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Read more about the article Electric Cell : E.M.F., Terminal Potential, Internal Resistance
Physics Notes

Electric Cell : E.M.F., Terminal Potential, Internal Resistance

An electric cell is a device that converts chemical energy into electrical energy and maintains a constant flow of charge in a circuit. It consists of two rods of different…

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June 29, 2022
Read more about the article How Transistor Works : PNP and NPN Transistors
Class 12 / Physics Notes

How Transistor Works : PNP and NPN Transistors

Transistors It is such an electronic device made of p and n-type semi conductor which is used in place of triode bulb. It was invented in 1948 by American scientists…

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June 8, 2022
Read more about the article Hydrogen Chloride : Preparation, Properties and Uses
Chemistrypage / Class 11

Hydrogen Chloride : Preparation, Properties and Uses

In 1648, Glouber obtained Hydrogen Chloride Gas by heating sodium chloride (common salt) and concentrated sulfuric acid. Debi proved in 1810 that it is a compound of hydrogen and chlorine.Hence…

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April 2, 2022
Read more about the article NEET Exams : Previous Year Chemistry Questions Chemical Bonding
NEET Exams

NEET Exams : Previous Year Chemistry Questions Chemical Bonding

5. Which of the following, set of molecules will have zero dipole moment? (NEET 2020)(a) Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene(b) Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene(c) Nitrogen…

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January 31, 2022
Read more about the article Oxidation Number : How to find Oxidation State
Class 11

Oxidation Number : How to find Oxidation State

Oxidation Number or Oxidation state The charge present on an atom or group of atoms is called the oxidation number or Oxidation State of that atom or group of atoms.…

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September 24, 2021
Read more about the article Iodine : Properties, Preparation and uses
Class 11

Iodine : Properties, Preparation and uses

Iodine History Iodine was discovered by Bernard Courtois in 1811. Its vapors are purple in colour. For this reason Galusek named it Iodine (Greek: Iodas = Violet) in 1813. Humphry…

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September 21, 2021
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