Questions

We know that polar substances are soluble in polar solvents and non polar substances are soluble in non-polar solvents only. Here the hydrocarbons are non-polar molecular substances and water is a polar solvent. So water can't dissolve hydrocabons.

Hence, as hydrocarbons are non-polar substances, they are insoluble in water as it is a highly polar solvent. 

Goitre

Bengaluru has became the second city in the country, and the first in south India, to have a full-fledged Metro rail in operation following the opening of a final 12-km section of the 42-km first phase of the Metro project. The first phase, comprising an 18-km east-west line and a 24-km north-south line, built at a cost of Rs 13,845 crore, was dedicated to the nation by President Pranab Mukherjee at an event in Bengaluru.

The Indian Institute of Technology (IIT) Kanpur will confer a doctorate on former sprint queen PT Usha, who missed a medal by a whisker at the 1984, Los Angeles Olympics. The degree, Doctor of Science (honoris causa – a degree awarded as a mark of esteem) will be conferred on June 16 to mark the 50th convocation of the prestigious institute of the country. This is her second doctorate – in 2002, Kannur University had conferred D.Lit on her.