Question

•The intermolecular forces are maximum in case of -

i) Copper
ii) Water

iii) Glycerin

iv) Hydrogen


• Potable water is obtained from river water by the process of

i) Sedimentation only

ii) Sedimentation and filtration only

iii) Sedimentation, filtration and chlorination only

iv) None of these


• Rusting of iron takes place due to the presence of ----------- in air.

i) Oxygen

ii) Nitrogen

iii) Water vapour

iv) Oxygen and water vapour


•The top part of a tooth projecting above the gums.

i) Root

ii) Neck

iii) Crown

iv) None of these


•The swim bladder present in fishes helps in -

i) Maintaining buoyancy

ii) Changing direction

iii) Swimming

iv) For breathing​

Answer 1

Answer:

1. I) Copper >Glycerin> Water> Hydrogen
2. Option iii
3. Option iv
4. None of these
5. iii) Swimming