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Q. What do you mean by Chemical Bonding? Ans. Atoms react chemically by losing, gaining or sharing electrons. Chemical bonds are the attractive forces that hold atoms toge
Distillation under reduced pressure: Distillation under reduced pressure is widely used for the purification of liquids which have very high boiling points at atmospheric pres
What is the effect of more electronegative atom on the strength of ionic bond: (1) Decreases (2) Increase (3) Decreases slowly (4) Remains the same Ans: Increase
Libermaan''s nitroso reaction mechanism
The de-Broglie wavelength associated with a particle of mass 10 -6 kg moving with a velocity of 10 ms -1 , is: (1) 6.63 x 10 -22 m (2) 6.63 x 10 -29 m
What are the physical propeties of S block ?
what is meant by dumas methad?give its functioning and uses
Q. Consider a hypothetical system in which two aqueous solutions are separated by a semiper- meable membrane. Solution ? is prepared by dissolving 1.00 x 10 -5 mol KCl in 10.0 g
A copper tube 1 inch in diameter and 2 feet long is filled with steel balls of 1 inch diameter. The space between the balls is filled with water. The specific gravity of steel is 7
A covalent bond is likely to be formed between two elements which: (1) Have similar electronegativities (2) Have low ionization energies (3) Have low melting points (4
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