| | - Teacher Name : Rakesh
- Total Questions : 15
- Time Allowed : 60
- Total Marks : 15
Q 1 :What is the process called when a solid changes directly into a gas? Q 2 :What is the smallest unit of matter that retains the properties of an element? Q 3 :What is the primary factor that affects the rate of diffusion in gases? Q 4 :Which of the following statements about particle movement is true? Q 5 :What is the primary reason for the ability of gases to fill a container? Q 6 :When salt is added to water, what happens to the salt particles? Q 7 :Which state of matter has a definite shape and volume? Q 8 :Which of the following is an example of diffusion? Q 9 :Which of the following best describes the arrangement of particles in a liquid? Q 10 :In a closed container, what happens to the water vapor above the liquid water when the temperature is increased? Q 11 :What happens to the particles of a solid when it is heated? Q 12 :Assertion: The melting of ice is a physical change. Reason: Physical changes do not alter the chemical composition of a substance. Q 13 :Which of the following is NOT a characteristic of gases? Q 14 :In which state of matter do particles have the most energy? Q 15 :What does the particle model of matter suggest about solids?
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