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By drawing a neat and labelled diagram of hydrometer for lighter liquids, answer the following questions:

1. Why is its gravity bulb made lighter?

2. Why is its buoyancy bulb very large?

3. Why is its stem marked from bottom to upward?

4. Why is it not suitable for measuring densities of heavier liquids?

Asked by Topperlearning User 4th June 2014, 1:23 PM
Answered by Expert
Answer:

1. Gravity bulb is made lighter, so that the hydrometer does not sink in lighter liquids.

2. Buoyancy bulb is made bigger, so that, it can displace sufficient amount of lighter liquid,

and hence can float in it.

3. It is because it sinks more in lighter liquids and least in water.

4. It is because, it starts tilting in heavier liquids.  Furthermore, its bulb also floats

slightly above the surface of the denser liquids on account of more upthrust.

Answered by Expert 4th June 2014, 3:23 PM
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