HSC EV Chemistry 2nd Paper 1st Chapter Note. Environment Chemistry. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It should not be confused with green chemistry, which seeks to reduce potential pollution at its source. It can be defined as the study of the sources, reactions, … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Chemistry 1st Paper 5th Chapter Note. Vocational Chemistry. Application Oriented Undergraduate Chemistry and Chemical Engineering textbook series: chemical sciences experimental basis. including basic knowledge of chemical science experiments with technology and the basic operation of experimental. analytical chemistry experiment instrument analysis of the 10 parts of the experiment. organic chemistry experiment. chemistry experiment. … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Chemistry 1st Paper 4th Chapter Note. Periodic Chemical Changes. Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Chemistry 1st Paper 3rd Chapter Note. Periodic Properties and Chemical Bonding of Elements. The elements in the periodic table are arranged in order of increasing atomic number. All of these elements display several other trends and we can use the periodic law and table formation to predict their chemical, physical, and atomic properties. … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Chemistry 1st Paper 2nd Chapter Note. Qualitative Chemistry. Qualitative chemical analysis, branch of chemistry that deals with the identification of elements or grouping of elements present in a sample. The techniques employed in qualitative analysis vary in complexity, depending on the nature of the sample. In some cases, t is necessary only to … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Chemistry 1st Paper 1st Chapter Note. Safe use of Laboratory. Many laboratories contain significant risks, and the prevention of laboratory accidents requires great care and constant vigilance. Examples of risk factors include high voltages, high and low pressures and temperatures, corrosive and toxic chemicals, and biohazards including infective organisms and their toxins. Measures to … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Higher Mathematics 2nd Paper 10th Chapter Note. Measures of Dispersion and Probabilities. In statistics, dispersion (also called variability, scatter, or spread) is the extent to which a distribution is stretched or squeezed. Common examples of measures of statistical dispersion are the variance, standard deviation, and interquartile range. Dispersion is contrasted with location or … Read more
Last Updated: March 22, 2026 at 8:44 pm
HSC EV Higher Mathematics 2nd Paper 9th Chapter Note. The motion of Particles in a Plane. Galileo was quoted above pointing out with some detectable pride that none before him had realized that the curved path followed by a missile or projectile is a parabola. He had arrived at his conclusion by realizing that a … Read more
Last Updated: March 22, 2026 at 8:44 pm
English Version HSC Chemistry Note. Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new … Read more
Last Updated: January 24, 2020 at 12:07 pm