Questions

Tripura, in a first-ever initiative, has started using plastic waste for the construction of roads.

As the frequency of sound is higher, women have shriller voices than men.

The shrillness or pitch of a sound is determined by its frequency. The higher the pitch shriller the voice. As the sounds produced by vocal cords of women are higher than men so women have shriller voices than men. Because their vocal cord is of smaller size. As their vocal cord is more stretched than men's.

To throw up the sponge means to give up a contest or to acknowledge defeat or surrender