Questions

Permanent hardness of water may be removed by the addition of Sodium Carbonate.

Charles Dickens pen name is Boz. Charles John Huffam Dickens was a British English writer and social critic of 19th century. He created some of the world's best-known fictional characters and is regarded by many as the greatest novelist of the Victorian era.

Violet colour has the highest energy. The higher the frequency, the faster the oscillations and thus the higher the energy. Therefore, the highest-frequency ultra-violet light or the lowest wavelength is violet.

All of the factors that contribute to global winds are 

1) Uneven warming of the earth by the sun
2) Coriolis Effect
3) Convection Cells

Process by which sediment is removed from its source is called Erosion.

BSF - Border Security Force

The motto of the organization BSF is "Duty unto Death."

Thermoset, or thermosetting, plastics are synthetic materials that strengthen during being heated, but cannot be successfully remouldedor reheated after their initial heat-forming. This contrasts withthermoplastics, which soften when heated and harden and strengthen after cooling. Thermoplastics can be heated, shaped and cooled as often as necessary without causing a chemical change, while thermosetting plastics will burn when heated after the initial moulding.

In 1960s AT&T introduces its Data phone, the firstcommercial modem. The first commercial modem made for converting digital computer data at analog signalsfor transmission across long distance networks