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The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
A. vaporization B. evaporation C. crystallization D. sublimation Submitted by :- Jamil Ahmed
Forces of attraction which may be present between all kinds of atoms and molecules are _____________________?
A. intramolecular B. intermolecular C. van der Waal D. Dipole-induced dipole Submitted by :- Jamil Ahmed
Hydrogen bonding is involved in____________________?
A. Solubility B. Cleansing action of detergents C. Biological molecules D. All Submitted by :- Jamil Ahmed
Liquid crystal is discovered by __________________?
A. William Crooks B. Fredrack Reinitzer C. J.J Thomson D. Bravis Submitted by :- Jamil Ahmed
Vapour pressure of water at 100°C is___________________?
A. 550 mm Hg B. 760 mm Hg C. 355 mm Hg D. 1489 mm Hg Submitted by :- Jamil…
When substance moves from a solid to a liquid state all of the following changes occur except__________________?
A. Molecules become more disordered B. K.E of the molecules decreases C. Intermolecular forces become weaker D. Molecule become further…
Which of the following has strongest intermolecular forces of attraction ?
A. Hydrogen (H2) B. Chlorine (Cl2) C. lodine (I2) D. Methane (CH4) Submitted by :- Jamil Ahmed
________________ is study about energy of a chemical system ?
A. thermochemistry B. thermodynamics C. chemical kinetics D. stoichiometry Submitted by :- Jamil Ahmed
Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
A. More strength of H-bonding B. More strength of London forces C. Less polarizability D. All of the above Submitted…
Amorphous substances posses_________________?
A. No definite geometry B. No definite heat of fusion C. No sharp melting points D. All of the above…