Questions

The term for classifying and grouping organisms is Taxonomy. It is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

The World Music Day is celebrated across the world on 21 June.

The day is also known as 'Fete de la Musique' after a music festival that began in France in 1982.

This Day was first celebrated on 21st June 1982.

The first Bengal Governor General of India was Warren Hastings.

Sparse matrix,

Index generation

Troposphere is the most densest layer and is the lowest atmospheric layer.

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.