The time taken for the earth and the solar system to complete one journey round the Milky Way.
The hardened material available on earth is
................mixtures are used for making a glass
Which is the largest satellite in the solar system?
Ganymede , satellite of Jupiter
Name the mineral used to produce artificial diamonds.
What landmark in science and technology did india achieve on 21 November 1963?
The launch of the first rocket from TERLS or Thumba Equatorial Rocket Launching Centre.