TRANSiTiON
{Striving singularity, Exploring Excellence}
EACH QUESTION CARRIES 3 MARKS
1. For any substance, why does the temperature remain constant during the change of state?
2. Why does a desert cooler cool better on a hot dry day?
3. Why does our palm feel cold when we put some acetone or petrol or perfume on it?
4. Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
5. Give 2 reason to justify water at room temperature is a liquid.
6. Why is ice at 273 K more effective in cooling than water at the same temperature?
7. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.
8. Give reasons we can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.
9. What are the characteristics of the particles of matter ?
10. Give reason why Naphthalene balls disappear with time without leaving any solid.
{Striving singularity, Exploring Excellence}
EACH QUESTION CARRIES 3 MARKS
1. For any substance, why does the temperature remain constant during the change of state?
2. Why does a desert cooler cool better on a hot dry day?
3. Why does our palm feel cold when we put some acetone or petrol or perfume on it?
4. Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
5. Give 2 reason to justify water at room temperature is a liquid.
6. Why is ice at 273 K more effective in cooling than water at the same temperature?
7. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.
8. Give reasons we can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.
9. What are the characteristics of the particles of matter ?
10. Give reason why Naphthalene balls disappear with time without leaving any solid.
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