The number of formula units in 29.25g of common salt_________________?
The number of formula units in 29.25g of common salt_________________? A. 6.022 x 1023B. 3.01 x 1023 C. 2 x NA D. 4 x 6.022 x 1023
The number of formula units in 29.25g of common salt_________________? A. 6.022 x 1023B. 3.01 x 1023 C. 2 x NA D. 4 x 6.022 x 1023
Rising of a wetting liquid in a capillary tube is due to__________________? A. Surface tension B. Cohesive forcesC. Adhesive forces D. viscosity
The boiling point increases down the zero group element due to_________________? A. Ion dipole forcesB. London forces C. Hydrogen bonding D. Dipole dipole forces
When water freezes at 0°C its density decreases due to_______________? A. Change of bond angles B. Cubic structure of iceC. Empty space present in the structure of ice D. Change of bond length
The conversion of vapours back into their liquid state is called__________________? A. crystallization B. evaporization C. vaporizationD. condensation
Steam causes more sever burn than the boiling water because it possesses _________________? A. Latent heat of fusionB. Latent heat of vaporization C. Latent heat of sublimation D. All of the above
The density of water may be__________________? A. Equal to that of iceB. Greater than that of ice C. Less than that of ice D. All are possible
Which one is a conductor but is not malleable ? A. IronB. Graphite C. Silver D. Platinum
Which one of the following does not show hydrogen bonding? A. Water B. Ethyl alcohol C. PhenolD. Diethyl ether
Which one is false for evaporation ? A. Surface phenomenon B. ContinuousC. Exothermic D. Cause cooling