Thermodynamics Class 12 Chemistry. We covered all the Thermodynamics Class 12 Chemistry in this post for free so that you can practice well for the exam.
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Thermodynamics Class 12 Chemistry Objective for Students
What is the use of a thermostat?
(A) To measure the temperature
(B) To increase the temperature
(C) To maintain the temperature
(D) To convert heat into electricity
Option c – To maintain the temperature
(A) Humidity
(B) Temperature
(C) Air
(D) Clouds
Option b – Temperature
The thermostat is a device that
(A) Measures heat
(B) Measures temperature
(C) Automatically regulates the temperature of a system
(D) Automatically regulates the pressure of a system
Option c – Automatically regulates the temperature of a system
A thermostat…… is a means of Keeping Stable.
(A) Current
(B) Temperature
(C) Pressure
(D) Heat Radiation
Option b – Temperature
What is the function of the thermostat of a refrigerator?
(A) To lower the temperature
(B) To increase the freezing point
(C) To maintain a constant temperature
(D) To decrease the melting point
Option c – To maintain a constant temperature
Which one of the following is used as an antifreeze for automobile engines?
(A) Ethanol
(B) Ethylene glycol
(C) Methanol
(D) Propyl alcohol
Option b – Ethylene glycol
What is absolute zero temperature?
(A) The starting point of any temperature scale
(B) Theoretically the lowest possible temperature
(C) The temperature at which the vapor of any liquid substance is condensed
(D) The temperature at which all materials are in vapor form
Option b – Theoretically the lowest possible temperature
Expansion during heating
(A) Occurs only in solids
(B) Increases the weight of the material
(C) Decreases the density of the material
(D) Occurs at the same rate for all liquids and solids
Option c – Decreases the density of the material
Transfer of heat by convection can take place in
(A) Solids and liquids
(B) Solids and vacuum
(C) Gases and liquids
(D) Vacuum and gases
Option c – Gases and liquids
When ice melts, then
(A) Volume increases
(B) Volume decreases
(C) Mass increases
(D) Mass decreases
Option b – Volume decreases
We covered all the thermodynamics class 12 chemistry above in this post for free so that you can practice well for the exam.
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