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Because Nucleus is composed of protons and neutrons..
Uses of Proteins (a) Proteins constitute as necessary part of our food. Meat, eggs, fish, cheese offer proteins to human beings. (b) In textile: Casein (a milk protein) is u
The energy of a photon is calculated by: (1) E= hv (2) h= Ev (3) h = E/v (4) E= h/v Ans: E= hv
Hybridisation in Organic Compounds (1) The method of mixing atomic orbitals to form a set of new equivalent orbitals is known as hybridisation. There are three kinds of hybridi
Critical Angle: The particular angle of incidence at which angle of refraction becomes 90 is known as critical Angle and it is denoted by θc
Electron occupies the available orbital singly before pairing in any one orbital occurs, it is : (1) Pauli's exclusion principle (2) Hund's Rule (3) Heisenberg's principle
general principle on metelurgy
Uses of Iodoform or tri-iodomethane (a) Iodoform is utilized as a fire extinguisher under the name pyrene. Dense vapours form a protective layer on the burning objects and avoi
As electron moves away from the nucleus, its potential energy: (1) Increases (2) Decreases (3) Remains constant (4) None of these Ans: Increases
how H+ ions are formed
GLASS: Glass is amorphous solid which is not true solid, it is rather super cooled liquid which possesses a very high viscosity. It has no fixed melting point, on heating graduall
in the nucleus of any atom,the no. of protons and the no. of neutrons are same.Also in the nucleus the protons and the neutrons are intermixed not remain seperated.In nucleus two protons never touch each other because between any two proton there is always a neutron which contradicts the force of repulsion.
BECAUSE THE REPULSIVE FORCE OF PROTONS IS LESS THAN THE ATRACTIVE FORCE BETWEEN NUCLEONS.
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