Physics GK 08 - General Properties of Matter

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1.
Which of the following is responsible for the fact that Tennis ball bounces higher at high altitudes than in plains?
2.
Which of the following term denotes the internal reaction force per unit area developed as a result of applied external force ?
3.
Which among the following defines cohesive force?
4.
The ideal fluid which is a hypothetical fluid should contain _______?
5.
A transition from the solid to gas phase with no intermediate liquid stage is called?