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Meena experimented, as shown below. When she pushed the bottle into the basin of water, she could see bubbles escaping from the rubber tube into the beaker of water. What can she infer from her Experiment?
As Meena pushes the bottle, the water level in the bottle increases and air present in the bottle gets pushed into the tube, which is bubbled out from the beaker. This experiment proves that air and water occupy some space, and only one matter can occupy space at any time.
With Increase Of Temperature, which of these changes
The fraction of solute present in water as temperature concentration in water will decrease; hence, the fraction of solute present in water changes.
Which of the following is not the characteristic for the matter?
The matter is affected by the inertia. Inertia is the tendency of the matter to be in a state of rest or motion. Example: The book on the desk remains in rest position utilities picked up from the desk. Thus It Is Showing Inertia.
Water stored in earthen pots become cool in summer because:
The water kept in an earthen pot main cool even in summer because of the earthen pot as many small holes. Water seeps out through them and evaporates from the surface of the pot. The energy needed for evaporation is taken from the water kept in the earthen pot. As a result, water kept in earthen pot become cool.
Which of the following information regarding the tube is correct?
If the tube has been open on both sides, the mercury will fall, so that is not the case. Also, the pressure will increase slightly because of the weight of mercury. So the tube must be closed at both the ends.
On Increasing Temperature, the rate of diffusion
On the increasing temperature, the diffusion rate increases as the kinetic energy of matter increases and more intermixing of matter occurs.
Venu blows into the straw, as shown above. What will be observed?
When Venu blows the straw, he applies pressure by pushing air into which form air bubbles water, the pressure in the basin increases and the water level in the beaker increases.The air bubbles formed in the water escape into the beaker.
A volatile liquid_____
A volatile liquid one that evaporates or evaporates quickly at room temperature. Volatile Liquids Have a low boiling point. As a result, they evaporate very easily at room temperature.
Which of the following is a surface phenomenon?
Freezing point of pure water is:
During summer water kept in an earthen pot becomes cool because of the phenomena of
Which of the following conditions will increase the evaporation of water?
When a burner supplies heat to boiling water, then the temperature of the water during vaporization
A gas can be liquefied by
A liquid boils at 100°C. Its temperature can also be expressed as
The three states of water; ice, water and steam can be arranged in the decreasing order of interparticle forces as
When water solidifies to ice, then heat is
Evaporation decreases by
Which of the following states has maximum energy?