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The energy that opposes dissolution of a solvent is: (1) Hydration energy (2) Lattice energy (3) Internal energy (4) Bond energy Ans: B
perkin ring clousre reaction
if the bond length in chlorine molecule is 1.98 angstrom and bond length in H-CL molecule is 1.76 angstrom calculate the covalent radius of hydrogen
Properties of Resorcinol 1. Resorcinol is a colourless crystalline solid, melting points 110°C. 2. Resorcinol is affected on exposure by light and air. 3. Resorcinol is s
all about isotopes
Dihydric alcohols - Hydrocarbon These are compound consisting of two hydroxyl sets. These are dihydroxy components of alkanes. Their common formula is A n H 2n+2 O 2 . The very
advantage of his theory?
Which type of bond is formed between similar atoms: (1) Ionic (2) Covalent (3) Coordinate (4) Metallic Ans: Covalent
If the velocity of hydrogen molecule is 5x 10 4 cm sec -1 then its de-Broglie wavelength is: (1) 2 Å (2) 4 Å (3) 8 Å (4)100 Å Ans: 4 Å
P-BLOCK GROUP ELEMENTS: The p block elements are belong to group 13 to 18.the outermost electronic configuration is ns2 np1 to ns2 np6.these are called represen
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