Question : At hill stations, the boiling point of water will be:

Option 1: same as at sea level

Option 2: less than that at sea level

Option 3: more than that at sea level

Option 4: equal to the melting point of ice

Question : An egg sinks in a soft water but floats in a concentrated solution of salt because:

Option 1: egg absorbs salt from the solution and expands.

Option 2: albumin dissolves in a salt solution and the egg becomes lighter.

Option 3: the density of the salt solution exceeds the density of eggs.

Option 4: water has high surface tension

Question : Select the option that expresses the given sentence in active voice.

Most of Earth's surface is covered by water.

Option 1: Water is covering most of Earth's surface.

Option 2: Water has been covering most of Earth's surface.

Option 3: Water covers most of Earth's surface.

Option 4: Water has covered most of Earth's surface.

Question : Iron rusts quickly in

Option 1: Rain water

Option 2: Sea water

Option 3: Distilled water

Option 4: River water

Question : Suez canel connects which of the following water bodies ?

Option 1: Mediterranean Sea and Black Sea

Option 2: Mediterranean Sea and Red Sea

Option 3: Pacific Ocean and Atlantic Ocean

Option 4: Mediterranean Sea and Arctic Ocean