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4. (a) Explain the concept of (i) intrinsic, (ii) n-type, and (iii) p-type semiconductors with the aid of bond diagrams and band diagrams. (b) What is a hole? Using a mathematic
Q. Describe the ion exchange process of softening hard water. What are its advantages? Ans. Determination of ion exchange or Deionization process: In this pro
Which of the following sets of quantum numbers represent an impossible arrangement: n l m m2 (1) 3 2 - 2 (+)
Electron configurations are governed by a limitation called as the Pauli Exclusion Principle: No two electrons can have the same value for all four quantum numbers n, l, m a
NMR Spectrum of benzyl methyl ether
what are the demerits of Bohr''s atomic model?
electron affinity of nitrogen is positive but of phosphorus it is negative why I that
The energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is known as latti
An open test tube at 293 K is filled at the bottom with 24.2 cm of Hg, and 11.2 cm of water is placed above the Hg. Calculate the pressure at the bottom of the test tube if the at
The Calorie, used to express food heat values, is similar as a kilocalorie of heat energy . If you eat a chocolate bar from the United States with 600 Calories of food energy, how
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