1. Who is known as father of Indian atomic energy. Write 5 sentences about him.
2. Define density. Search density of air, water, earth crust, diamond gold osmium Mercury and iron. Which is the heaviest element.
3. Define pure substance. How is purity of a substance determined. Explain a method.
4. Explain boiling with diagram
Answers
1) Homi J. bhabha
*Homi Jehangir Bhabh was an Indian nuclear physicist, founding director, and professor of physics at the Tata Institute of Fundamental Research (TIRF).Colloquially known as "father of the Indian nuclear programme",Bhabha was also the founding director of the Atomic Energy Establishment, Trombay (AEET) which is now named the Bhabha Atomic Research Centre in his honour. TIFR and AEET were the cornerstone of Indian development of nuclear weapons which Bhabha also supervised as director.
2)Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.
diamond,gold and earth crust is the heaviest
3) Pure substances are defined as substances that are made of only one type of atom or molecule. The purity of a substance is the measure of the extent to which a given substance is pure. The physical properties of a pure substance include well-defined melting and boiling points.