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For the energy levels in an atom, which one of the following statements is correct: (1) There are seven principal electron energy levels (2) The second principal energy leve
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
Briefly tell me about chemical combination and its laws
whatdo you mean by gravitational force constant ?
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula o
Q.Illustrate the Basic structure of polymers? Ans. Polymers are large organic compounds made of regularly repeating units. Plastics are made of polymers. Polymers ar
Q. Normal functioning of blood? The sixth position marked by X is either occupied by H 2 0 or 0 2 molecules. Impotant thing to note is that Fe 2+ in hemoglobin does not get o
In the formation of Nacl from Na and cl: (1) Sodium and chlorine both give electrons (2) Sodium and chlorine both accept electrons (3) Sodium loses electron and chlori
detailed explanation of pseudo first order reaction
The electronic configuration (outermost) of Mn +2 ion (atomic number of Mn= 25 ) in its ground state is: (1) 3d 5 , 4s o (2) 3d 4 , 4s 1 (3
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