SSC-1 Hub
Computer Science
Physics
Chemistry
Islamic Studies
Pak Studies
Login
Open main menu
TextBook Exercise Questions
7.1 Encircle the correct answer from the given choices.
7.2 How is the kinetic molecular model differentiating various states of matter?
7.3 Does there exist a fourth state of matter? What is that?
7.4 What is meant by density? What is its SI unit?
7.5 Can we use a hydrometer to measure the density of milk?
7.6 Define the term pressure.
7.7 Show that atmosphere exerts pressure.
7.8 It is easy to remove air from a balloon but it is very difficult to remove air from a glass bottle. Why?
7.9 What is a barometer?
7.10 Why is water not suitable to be used in a barometer?
7.11 What makes a sucker pressed on a smooth wall stick to it?
7.12 Why does the atmospheric pressure vary with height?
7.13 What does it mean when the atmospheric pressure at a place falls suddenly?
7.14 What changes are exposed in weather if the barometer reading shows a sudden increase?
7.15 State Pascal's law.
7.16 Explain the working of a hydraulic press.
7.17 What is meant by elasticity?
7.18 State Archimedes' principle.
7.19 What is upthrust? Explain the principle of flotation.
7.20 Explain how a submarine moves up to the water surface and down into the water.
7.21 Why does a piece of stone sink in water but a ship with huge weights float?
7.22 What is Hooke's law? What is meant by the elastic limit?
7.23 Take a rubber band. Construct a balance of your own using a rubber band. Check its accuracy by weighing various objects.