Diversity In Living Organisms — Science STD 9 — Question

Name the longest animal cell.

 Explain why, if a stone held in our hand is released, it falls towards the earth.

Name the principle which gives the magnitude of buoyant force acting on an object immersed in a liquid.

When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?

What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?

What difference in the property of two miscible liquids enables their separation by fractional distillation?

If the same body is taken to places having different gravitational field strength, then what will vary: its weight or mass?