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jagriti •
12 May 2020

Laws Of Chemical Combination And Dalton's Atomic Theory

Lavoisier and Joseph L. Proust proposed two laws of chemical combination.  during a chemical reaction, the sum of masses of the reactant and the pro

General Science Chemistry

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jagriti •
10 May 2020

Atoms, Molecules And Ions

Atoms, Molecules And Ions

The Building block of all matter is called an atom. Atoms are extremely small, smaller than anything that we can imagine or compare with. For exam

General Science Chemistry

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jagriti •
14 May 2020

waves and sound - types, production, propagation and characteristics.

Waves and sound - types, production, propagation and characteristics.

As the object moves backward and forward consecutively, a series of compression and rarefaction will be created in the air which will ultimately for

General Science Physics

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jagriti •
14 May 2020

Molecules and ions

 A molecule is, in general, a group of two or more atoms that are chemically bounded together by certain attractive forces. For example, Two atom of

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jagriti •
14 May 2020

Chemical Formula of compounds and rules for writing

 The symbolic representation of composition is termed as the chemical formula of a compound. Two things are required to learn and write a chemical f

General Science Chemistry

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jagriti •
14 May 2020

Molecular Mass and Mole Concept

 The summation of the atomic masses of all the atoms in a molecule of the substance is known as the molecular mass of that substance. It is expresse

General Science Chemistry

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jagriti •
15 May 2020

Sound: Production and propagation

The basic way for the production of Sound is “vibration”. When an object vibrates it produces sound.  The matter or substance through which sound is

General Science Physics

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jagriti •
16 May 2020

Speed of sound in different media

  The speed of the sound in a medium is affected by the 1.  It depends upon the density of the medium. For instance - The speed of sound is maximum

General Science Physics

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jagriti •
16 May 2020

Sound: Reverberation, and Range of Hearing

Reverberation is the persistence of a sound after a sound is produced. A reverberation is created when a sound signal is reflected multiple times un

General Science Physics

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jagriti •
19 May 2020

Structure of Human Ear and Hearing Aid

Structure of Human Ear and Hearing Aid

A hearing aid is a battery-operated, an electronic device that receives sound from the atmosphere and converts it into electrical signals. Humans

General Science Physics Class 9th

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jagriti •
25 Mar 2021

Thomson, Rutherford and Bohr model of atom.

Thomson, Rutherford and Bohr model of atom.

Thomson's atomic model proposed that an atom is uniform sphere of positive charges (due to presence of protons ) as well as the negative charges (

Class 9th General Science Chemistry

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