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Physical properties of Salicylic acid (i) Salicylic acid is a colourless needle shaped crystalline compound. (ii) Salicylic acid's m.p. is 156°C. (iii) Salicylic acid is
formation of energy bonds in solids are in accordance to? give reasons .
What parts of molecular forces are expected to exist between the species in any three of the following pairs constituting mixtures? (a) He and N2 (b) Cl2 and NO- 3 (c) NH
Positronium consists of an electron and a positron (a particle which has the same mass as an electron, but opposite charge) orbiting round their common centre of mass. Calculate th
Q. Definition of Avogadros Hypothesis? Ans. Equal volumes of different gases at the same temperature and pressure contain the same number of molecules. At a given temperatu
Which of the following sets of orbitals may degenerate : (1) 2s, 2p x , 2p y (2) 3s, 3p x , 3d xy (3) 1s, 2s, 3s
What is difference between silica used in TLC and HPLC column? TLC is called thin layer chromatography. The simple technique works on the principle of adsorption, where as HPLC i
define metalloid
The nitride ion in lithium nitride is composed of: (1) 7 protons + 10 electrons (2) 10 protons + 10 electrons (3) 7 protons + 7 protons (4) 10 protons + 7 electr
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