Force and Pressure — Science STD 8 — Question

Why do sugar and salt dissolve in water but not in oil?

In the following statements, the underlined words are jumbled up. Write them in their correct form. Vehicles produce high level of pollutants like carbon dioxide, nitrogen oxides, nobrac moondexi and mosek.

Name the biggest planet of the Solar System.

In which part of the females, sperms are introduced?

What are gametes?

Name one compound which is decomposed into hydrogen and oxygen by using the chemical effect of electric current.

Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain.

List few examples of the force exerted by the muscles in our body.

What do you use to treat oral dehydration at home?

Name the hormone which prepares our body for action to face emergency situation like danger, fear, anger or excitement.