Questions

Narmada rises near Amarkantak

Yes, when rain starts falling umbrella goes up for pretecting us from wetting.

A pen name is nothing but a nick name used by the writer when publishing books instead of using their real names. 

Kamala Kanta was the pen name of Bankim Chandra Chatterjee who lived from 1838 - 1894. He was a Bengali author, poet who wrote Indian national anthem Vandemataram.

In common we all call the systematic name of NH4ClO3 as Ammonium Chlorate. But originally the systematic name is azanium trioxidochlorate.

A Treasury Bill (known as T-Bill) is an instrument of money market, used to finance short term requirements of Government of a country. A T-Bill is issued at a rate lower than the Face value, and redeemed at Face value on maturity, this difference is the rate of interest on T-Bill. This rate of interest is called Risk free Rate of the country.