Questions

There   are five known   states   of matter:    solids,    liquids,    gases, plasma and Bose-Einstein condensates.  The  main  difference in the structures of each state is in the densities of the particles.

Only   1   and   2   are   correct,   as Mahatma  Gandhi’s  speech  in  BHU on 4 February,1916 did not include plight  of  untouchables  and  there was no issue of the mill owners on Ahmedabad in 1916.

A price floor is the minimum price that can be charged. A binding price floor occurs when the government sets a required price on goods at a price above equilibrium. Because the government requires that prices not drop below this price, that price binds the market for that good.

A binding price ceiling is one that is set below equilibrium price.

Nicolaus Copernicus was decribed by his work on "The Heliocentric Theory" which is based on that the earth revolves around the Sun.

This theory was developed in parts by different astronomers over many years, namely Aristarchus, Copernicus, Kepler, and Galileo.

For balancing the weight of ring, you need to put your finger or any solid object inside the ring so that you will be able to sustain their own weight because they are not able to sustain their own weight.so its centre of mass lies outside the body.