Home
About
FAQs
System Requirements
In the news
Workshops
Training
Training Calendar
Request for Training
Training Status
Registration
For Teachers
For Students
For Schools
Contact us
Login
Languages
English
हिंदी
മലയാളം
मराठी
ಕನ್ನಡ
you are here->
home
->
Class 9
->
To Study the Changes in the State of Sublimate Solids on Heating
To Study the Changes in the State of Sublimate Solids on Heating
Theory
Theory
Procedure
Video
Simulator
Viva Voce
Resources
Feedback
1)
Which of the following substances directly changes from a solid to a gas without becoming a liquid?
Sugar
Dry ice
Water
Salt
2)
In which conditions does sublimation occur more efficiently, particularly concerning the characteristics of the surrounding air?
Dry
Hot
Humid
Cold
3)
What is the temperature at which naphthalene, commonly found in mothballs, sublimes?
0°C
32°F
100°C
176°F
4)
Which of the following processes is considered the reverse of sublimation?
Condensation
Melting
Freezing
Evaporation
5)
What factors influence the sublimation of solids?
Surface area
Temperature only
External pressure
Intermolecular forces
6)
In which of the following conditions does sublimation occur more rapidly?
High pressures
Low temperatures
Dry air
High humidity
7)
Which substances can undergo sublimation at room temperature and pressure?
Sugar
Ammonium chloride
Iron
Sodium chloride
8)
Which property of sublimation makes it worthwhile in the process of freeze-drying food?
Reduction of odor
Preservation of nutrients
Increase in volume
Speed of the process
9)
What phase does a substance directly transition to from the solid phase during the process of sublimation?
Plasma phase
Gas phase
Liquid phase
Condensed phase
10)
The sublimation process is employed in which of the following industries?
Automotive
Construction
Food
Textile