Questions

The number of protons in an isotope or an atom gives its atomic number whereas the number of protons and neutrons gives its mass number.

Program counter holds the address of either the first byte of the next instruction to be fetched for execution of the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.

Jazz is a music genre that originated in the African-American communities in the early 20th century. The Jazz age occurred during 1920 - 1930 i.e, started post-World War 1 movement and ended with the Great Depression in 1929. It was the age in which jazz music and dance emerged.

The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.

In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.

The nervous system has three main functions:

* To collect sensory input from the body and external environment.

* To process and interpret the sensory input.

* To respond appropriately to the sensory input.

New Delhi is the most polluted city in the world, according to Air Quality Index 2018.