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The house needs sound absorbing materials in the walls so that reveberation dosen't happens and can here clearly what people will be saying in the house
It is also used in cinema halls also
I believe that this answer was heplful.
Halite is transparent, but it can be died many different colors calcite is a white or colorless mineral consisting of calcium carbonate. It is a major constituent of sedimentary rocks such as limestone, marble, and chalk, can occur in crystalline form gypsum is a soft white or gray mineral consisting of hydrated calcium sulfate.
Answer:
Structures are determined by two principal factors: the relative sizes of the ions and the ratio of the numbers of positive and negative ions in the compound.
