Advertisements
Advertisements
प्रश्न
Give reasons: Ice floats on water.
Advertisements
उत्तर
Density of ice is less than that of water that is why it floats on the surface of water.
APPEARS IN
संबंधित प्रश्न
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
Why is it said that-
Water is a universal solvent.
State whether the following statement is true or false.
The substance in which a solute dissolves is called a solvent.
Explain the picture in your own words.
Why is the density of seawater more than that of rain water?
Why should a glass bottle completely filled with water never be kept in a freezer?
Which of the following equations depict the oxidising nature of \[\ce{H2O2}\]?
If same mass of liquid water and a piece of ice is taken, then why is the density of ice less than that of liquid water?
Melting point, enthalpy of vapourisation and viscosity data of \[\ce{H2O}\] and \[\ce{D2O}\] is given below :
| \[\ce{H, O}\] | \[\ce{D2O}\] | |
| Melting point / K | 373.0 | 374.4 |
| Enthalpy of vapourisation at (373 K)/kJ mol–1 | 40.66 | 41.61 |
| Viscosity/centipoise | 0.8903 | 1.107 |
On the basis of this data explain in which of these liquids intermolecular forces are stronger?
Explain why \[\ce{HCl}\] is a gas and \[\ce{HF}\] is a liquid.
How will you account for 104.5° bond angle in water?
Write two reactions to explain amphoteric nature of water.
Pure water boils at ______ °C at one atmospheric pressure.
Freezing of water will cause an ______ is the volume.
One gram of water requires ______ of heat to raise its temperature by l°C.
What is the taste of distilled water & boiled water?
What are the physical properties of pure water?
The density of gold is 19 g/cm3. If 1.9 × 10−4 g of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ______ × 106.
