Protist used for the construction of sound proof rooms, is -

The alga/protist used for the construction of sound proof room is

The alga/protist used for the construction of sound proof room is

The alga/protist used for the construction of sound proof room is

The alga/protist used for the construction of sound proof room is

40*48 size of a room is about to be constructed and for the construction, builder has ordered the required square tiles for the room. Find the minimum number of square tiles required for the construction if the size of the tile is maximum?

Protists contains

The cause of hearing of sound, produced in one room, in a nearby room is

What is constructive interference of sound ?

Which of the following used for preparation of bullet proof windows and safty (or) crash helments