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Why does calcium sulphate form scales in high pressure boilers
Q. Evolution of the Modern Atomic Model? Ans: The atomic models of Dalton, Thomson, Rutherford, and Bohr eventually evolved into the current-day Quantum Mechanical model of the
Q. In 1982, the International Union of Pure and Applied Chemistry recommended that the value of the standard pressure p o be changed from 1 atm to 1 bar. This change affects the
Which geometry does have Formaldehyde molecule The formaldehyde molecule has trigonal planar geometry. Therefore, both the H-C-H bond angle and the H-CAO bond angle are abou
Q. Concepts of valence bond theory? The developments can also be cited as a typical example of the manner in which scientific theories grow and are refined in any particular fi
It is stated that Bohrs theory is applicable to hydrogen like ions.why? Ans) It is not stated in bohr''s theory but it is a drawback of his theory. The reason for this is
Why do the hydrides of O and F in group 16 and 17 respectively show abnormally high melting points and boiling points as compared to other hydrides in their respective groups? Expl
Paired Comparison (Preference) Test In this test the assessor is presented with two coded products and asked to indicate whether there is a preference between them. The test
In solid state chemistry the CN 2 2- ion shows constitutional isomerism. The free acids of both anions (at least in the gas phase) are known. Illustrate the structural formul
role of modifiers in solvent extraction of metal ion
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