Questions

Nebulous means hazy, Tiny means small, Vague means unclear, Insignificant means unimportant, Inadequate means in sufficient. So, Nebulous is nearest in meaning to Vague.

In hydrocarbon, the boiling point directly varies with the length of carbon chain. On increasing the number of carbon atom, the boiling point of the compound also increases. Paraffin contains highest number of carbon atoms whereas, ethane is comprised of two carbon atoms.

The decreasing order of boiling point of mention compounds is written as follows:

Paraffin > Octadecane > Hexane > Neohexane > Ethane

Angle traced by hour hand in 12 hrs. = 360º.

Angle traced by it in  11/3 hrs=  36012*113°=110°

Angle traced by minute hand in 60 min. = 360º.

Angle traced by it in 40 min. =(360/60*40)°=240°

  Required angle (240 - 110)º = 130º.

The given puzzle follows a logic that,

2 + 10 = 24 => 2 + 10 = 12 x 2 = 24

3 + 6 = 27 => 3 + 6 = 9 x 3 = 27

7 + 2 = 63 = 7 + 2 = 9 x 7 = 63

Similarly, 5 + 3 = 40 => 5 + 3 = 8 x 5 = 40.

Giraffe is the animal that do not make any sound.

The weight of an object is minimum when it is placed at the center of the earth because when an object is in the center, it experiences gravitational pull from all directions.