Punjab Public Service CommissionPunjab State Civil Services Combined Competitive Examination Syllabus: Preliminary ExaminationThe Preliminary Examination will consists of two papers i.e. Paper I General Studies and Paper II Civil Services Aptitude Test Paper –I General Studies1.Everyday Science States of matter, structure of atom, versatile nature of carbon. Acids, bases, salt: corrosion in metals, action of soaps. Life on Earth – evolution, marine & terrestrial life. Human body and life processes, nutrition, disease - its causes & prevention, infectious diseases, lifestyle diseases. Public health initiatives, mother and child health, immunisation & vaccination, HIV-AIDS, TB, polio etc. Force-laws of motion & gravitation, Archimedes principle. Energy – kinetic & potential. Light – reflection & refraction – concepts and applications. Sound – propagation & reflection- concepts and applications. Electric current – concepts and applications. Computers and telecommunication – concepts and applications.2.Environmental studies Composition and structure of the atmosphere. Solar system – heat balance & temperature.