Question : On a clean glass plate, a drop of water spreads to form a thin layer, whereas a drop of mercury remains almost spherical because:

Option 1: mercury is a metal

Option 2: the density of mercury is greater than that of water

Option 3: the cohesion of mercury is greater than its adhesion with glass

Option 4: the cohesion of water is greater than its adhesion with glass

Question : Assume that a drop of water is spherical and that its diameter is one-tenth of a cm. A conical glass has a height equal to the diameter of its rim. If 32,000 drops of water fill the glass completely, then the height of the glass (in cm) is:

Option 1: 1

Option 2: 2

Option 3: 3

Option 4: 4

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 : Which type of glass is used for making glass reinforced plastic ?

Option 1: Pyrex glass

Option 2: Flint glass

Option 3: Quartz glass

Option 4: Fibre glass

Question : A sentence has been given with a blank to be filled with an appropriate word. Choose the correct alternative.
Every person should know their own _______, what their skill set is, and how unique they are.

Option 1: calamities

Option 2: punctualities

Option 3: specialties

Option 4: fecundities