Physics
Grade-9
Easy
Question
Case 1: Water is heated to a temperature of 40 degree Celsius.
Case 2: It is heated further to 70 degrees Celsius.
The KE of the molecules in case 1 is __ the KE of the molecules in case 2.
- Equal to
- Greater than
- Smaller than
- Any of the above
Hint:
Temperature increases the KE of the system
The correct answer is: Smaller than
More temperature means more KE, therefore as the temperature is more in case 2, the KE is more there
Related Questions to study
Physics
Which of the following is zero at the absolute zero temperature?
- Speed of the particles
- Kinetic energy of the particles
- Pressure
- All of the above
Which of the following is zero at the absolute zero temperature?
PhysicsGrade-9
- Speed of the particles
- Kinetic energy of the particles
- Pressure
- All of the above
Physics
If olive oil is heated, the speed of the particles in it ____.
- Increases
- Decreases
- Stays the same
- Becomes zero
If olive oil is heated, the speed of the particles in it ____.
PhysicsGrade-9
- Increases
- Decreases
- Stays the same
- Becomes zero
Physics
Which of the following is not a unit of temperature?
- Degree Celsius
- Degree Fahrenheit
- Kelvin
- Joules
Which of the following is not a unit of temperature?
PhysicsGrade-9
- Degree Celsius
- Degree Fahrenheit
- Kelvin
- Joules
Physics
Two bodies A and B are in contact with each other in an insulated box. A is at a higher temperature than B. The direction of flow of heat is ____.
- a to b
- b to a
- a and b to the surroundings
- None of these
Two bodies A and B are in contact with each other in an insulated box. A is at a higher temperature than B. The direction of flow of heat is ____.
PhysicsGrade-9
- a to b
- b to a
- a and b to the surroundings
- None of these
Physics
The particles of a _____ move in the most random way and at greatest speeds.
- Solid
- Liquid
- Gas
- Gelly
The particles of a _____ move in the most random way and at greatest speeds.
PhysicsGrade-9
- Solid
- Liquid
- Gas
- Gelly
Physics
As the temperature of a substance of a fixed amount in a fixed volume increases _____.
- The speed of its constituent particles increases
- The KE of the particles increases
- The heat content of the substance increases
- All of the above
As the temperature of a substance of a fixed amount in a fixed volume increases _____.
PhysicsGrade-9
- The speed of its constituent particles increases
- The KE of the particles increases
- The heat content of the substance increases
- All of the above
Physics
When two bodies A and B are placed in contact with each other, the total heat is _____.
- Heat(A) + Heat(B)
- Heat(A) - Heat(B)
When two bodies A and B are placed in contact with each other, the total heat is _____.
PhysicsGrade-9
- Heat(A) + Heat(B)
- Heat(A) - Heat(B)
Physics
The temperature _____ on the kinetic energy of the constituent particles.
- Does not depend
- Depends directly
- Depends indirectly
- Depends inversely
The temperature _____ on the kinetic energy of the constituent particles.
PhysicsGrade-9
- Does not depend
- Depends directly
- Depends indirectly
- Depends inversely
Physics
0 K = ____ oC
- -100.15
- 100.15
- 273.15
- -273.15
0 K = ____ oC
PhysicsGrade-9
- -100.15
- 100.15
- 273.15
- -273.15
Physics
Which of the following represents the absolute zero temperature?
- 0 K
- 0oC
- 0oF
- All of the above
Which of the following represents the absolute zero temperature?
PhysicsGrade-9
- 0 K
- 0oC
- 0oF
- All of the above
Physics
The S I unit of temperature is _____.
- Degree Celsius
- Degree Fahrenheit
- Kelvin
- Joules
The S I unit of temperature is _____.
PhysicsGrade-9
- Degree Celsius
- Degree Fahrenheit
- Kelvin
- Joules
Physics
Temperature can be measured by ____.
- Calorimetry
- Barometer
- Odometer
- Thermometer
Temperature can be measured by ____.
PhysicsGrade-9
- Calorimetry
- Barometer
- Odometer
- Thermometer
Chemistry
What is the temperature when 2.10 moles of nitrogen gas and it has a pressure of 1.25 atm in a 25L of tank?
- 173K
- 252K
- 181K
- 212K
What is the temperature when 2.10 moles of nitrogen gas and it has a pressure of 1.25 atm in a 25L of tank?
ChemistryGrade-9
- 173K
- 252K
- 181K
- 212K
Chemistry
What is the shape of the graph for the pressure-temperature for an ideal gas?
- Hyperbola
- Parabola
- Straight line
- Semi-circle
What is the shape of the graph for the pressure-temperature for an ideal gas?
ChemistryGrade-9
- Hyperbola
- Parabola
- Straight line
- Semi-circle
Chemistry
If all other conditions remain constant, then select the pair of variables are inversely proportional to one another for a gas?
- P, V
- P, T
- V,P
- n, V
If all other conditions remain constant, then select the pair of variables are inversely proportional to one another for a gas?
ChemistryGrade-9
- P, V
- P, T
- V,P
- n, V