National Science Olympiad Forum By SOF Olympiad Trainer - Page 15

User Forum

Subject :NSO    Class : Class 10

Post Your Answer

Subject :NSO    Class : Class 8

Post Your Answer

Subject :NSO    Class : Class 6

The given figure shows the heating curve of a substance.

Straight parts ab and cd of the curve show that

ANo heating is done during this period
BHeat energy is used to overcome the forces of attraction between the particles
CThermometer showed some error during this period
DEnergy of particles of the substance is zero during this period


It is BStraight parts ab and cd show that temperature remains constant during this time period. It happens during phase change (from solid to liquid in ab and from liquid to vapour in cd) as heat energy is used to overcome the forces of attraction between the particles and hence temperature does not change.

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 2

Post Your Answer

Subject :NSO    Class : Class 10

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
B.X- tsunami;Y- earthquake

Ans 2:

Class : Class 5
B.X- tsunami;Y- earthquake

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer