Terylene is a condensation polymer of ethylene glycol and which acid?

Helium is added to the oxygen supply of deep sea divers because it is _________

The most serious air pollutant causing health hazard is

Who won the first medal for India at the Rio Olympics?

"Earth provides enough to satisfy everyman's need but not everyman's greed". Who said this?

Study the following bar­ diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in million US $) from 1991 ­ 1992 to 1998 ­ 1999.

Ratio of the sum of foreign exchange during the years 1991­-92, 1992­-93, 1993-­94 to that during the years 1995-­96, 1996­-97, 1997­-98 is

Study the following bar­ diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in million US $) from 1991 ­ 1992 to 1998 ­ 1999.

The percentage increase in the foreign exchange reserves in 1997­98 over 1993­94 is

Study the following bar­ diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in million US $) from 1991 ­ 1992 to 1998 ­ 1999.

The foreign exchange reserves in 1996­97 were approximately what percent of the average foreign exchange reserves over the period under review?