For the following questions answer them individually
What was the distance (around in km) covered by the first-ever train between Bombay and Thane in 1853?
Which law was studied in the year 1787, in which it was said that the volume of a gas increases with its absolute temperature and if its absolute temperature decreases, then its volume will decrease?
In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, that describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
Which Article of the Constitution of India lays down that an Indian citizen has the right to use any restaurant, road or public place?