Science ASSET Questions- Practice

Osmosis is a process in which solvent molecules move from a region of lower solute concentration to one of a higher solute concentration through a semi-permeable membrane. The given picture is diagrammatic representation of MOLECULES OF SOLUTE in water. What is most likely to be observed in the given set-up after sometime?

• More water molecules will move from Region 1 to Region 2

• More water molecules will move from Region 2 to Region 1

• Equal number of water molecules will move either way between Regions 1 and 2

• There will be no movement of water molecules between Regions 1 and 2

What is the difference between evaporation and boiling?

• There is no difference- they are exactly the same

• Evaporation unlike boiling , occurs at all temperatures

• In evaporation unlike in boiling there is no state change

• In boiling unlike in evaporation the liquid volume reduces

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

Three gases found in the Earth's atmosphere are :

Carbon-Dioxide

Oxygen

Nitrogen

What is their order of abundance from greatest to least?

• Nitrogen , Oxygen , Carbon-Dioxide

• Nitrogen, Carbon Dioxide , Oxygen

• Oxygen, Nitrogen , Carbon -Dioxide

• Carbon-Dioxide , Oxygen , Nitrogen

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D