Questions

The Ganges, Brahmaputra delta covers an area of about 75000 sq km.

The Study of Blood is called as Hematology which involves treating diseases that affect the production of blood and its components, such as bloodcells, hemoglobin, blood proteins, bone marrow, platelets, blood vessels, spleen, and the mechanism of coagulation.

J. J. Thomson discovered electrons in the year 1897.

Ernest Rutherford discovered protons in 1911.

James Chadwick discovered neutrons.

Washing soda is the common name for Sodium Carbonate (Na2CO3). It is also called as Soda Ash.

Jean Piaget was a cognitive psychologist who identified four stages of development: the sensorimotor stage from birth to 2 years, the preoperational stage from age 2 to age 7, the concrete operational stage from age 7 to 11, and the formal operational stage from age 11 to adult. He identified milestones that occur at each stage.

According to Piaget, the main task of the sensorimotor stage is for the child to learn the concept of object permanence, use senses and motor skills to understand the world.