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What are the Interfacial Defects Grain boundaries are interfaces where crystals of dissimilar orientations meet. A grain boundary is a single-phase interface, with crystals on
Following Hund's rule which element contains six unpaired electron: (1) Fe (2) Co (3) Ni (4) Cr Ans: Cr
Q. Describe Sulphurous Acid ? Sulphurous acid H 2 SO 3 is known only in solution. It exists mainly as a hydrate of sulphur dioxide SO 2 . 7H 2 O two series of salts the bisulp
Q. Estimation of synthetic food colours in foods? Food colours in various products need to be isolated, identified and then quantitatively measured for their limits. Estimatio
Silica glass: It is produced by heating pure sand to its melting point. Because of absence of refining agents, it is extremely difficult to get rid of all air-bubbles. Moreover, o
Saturated and unsaturated compounds If, in an organic compound consisting of two or more carbon atoms, there are just only single bonds among carbon atoms, after that the comp
Problem: Let us calculate Q value of the reaction 27 Al (d, α) 25 Mg Answer: Given that masses of 27 Al = 26.981541 2 H = 2.014102 4 He = 4.
2p orbitals have : (1) n=1, l=2 (2) n=1, l=0 (3) n=2 l=1 (4)n=2, l=0 Ans: n=2 l=1
Physical properties of Phenol (a) Phenol is a colorless crystalline, deliquescent solid. It attains pink colour on exposure to air and light. (b) Phenol is capable of formin
Rutherford's alpha particle scattering experiment eventually led to the conclusion that: (1)The point of impact with matter can be precisely determined (2)Electrons occupy s
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