Question
Which row gives the correct name for each change of state shown?
| change of state | ||
gas to liquid | liquid to solid | solid to liquid | |
A | condensation | melting | solidification |
B | condensation | solidification | melting |
C | evaporation | melting | solidification |
D | evaporation | solidification | melting |
Answer/Explanation
Ans: B
Interconversion of three states of matter: Any state of matter can be converted into other states with the help of temperature or pressure.
(A) Solid to Liquid Fusion
(B)Liquid to GasVaporisation
(C)Gas to liquidCondensation
(D)Liquid to Solid Solidification
(E) Solid to GasSublimation
(F)Gas to Solid Sublimation
Question
A student has a syringe which has its open end sealed. The syringe is completely filled with a certain substance, as shown in diagram 1. The student pushes the piston of the syringe in as far as possible, as shown in diagram 2.
What is in the syringe?
A a gas and a liquid
B a solid and a liquid
C a liquid only
D a solid only
Answer/Explanation
Ans: A