Atoms and Molecules — Science STD 9 — Question

Which one of the following sets of phenomena would increase on raising the temperature?

Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions:

Pure copper sulphate can be obtained form an impure sample by the process of:

Deflection back of a few particles by large angle on hitting thin foil of gold in Rutherford's experiment showed that :

Sugar dissolves in water to form sugar-water solution. Name the solute.

The boiling point of ethane is, -88°C. This temperature will be equivalent to:

The English name of an element is potassium, its Latin name will be:

1. Plumbum.
2. Cuprum.
3. Kalium.
4. Natrium.

The dye from blue fountain pen can be separated by:

One of the following liquids will leave behind a residue on heating. This one is:

Naphthalene can be separated for sand:

1. By sublimation.
2. By distillation.
3. By crystallisation.
4. By using water as solvent.