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The set of quantum numbers n= 3, l=0, m=0, s= -1/2 belongs to the element: (1) Mg (2) Na (3) Ne (4) F Ans: Mg
Q. Define Food spoilage? Food spoilage is a major concern of all people. Spoilage by growth of bacteria, yeasts and moulds limits the time that the food can be stored and still
Purification of raw water for domestic use involve following process: (1) SCREENING: T he raw water is passed through screens having large number of holes where floati
Q. Briefly explain about Diffusion of Gases? Ans. The following are some important points on the diffusion of gases: Gas molecules have an average kinetic energy
Nuclei contain uncharged neutrons and positively charged protons; these two particles with about the same mass are known as nucleons. The number of protons is the atomic number of
The emission spectrum of hydrogen is found to satisfy the expression for the energy change. teiangle E (in joules) such thatTriangle E= 2.18x10(1/n 2 1 - 1/ n 2 1 ) J where n
Why alcoholic acidity of maids is expressed as H2SO4?
Q. Write short note on units of hardness and their relationship. Sol. Units of hardness and their relationship. (1) Parts Per million (ppm): It is defined as t
LITHIUM AND BERYLLIUM MARKEDLY DIFFERENT FROM OTHER MEMBERS OF THEIR RESPECTIVE GROUP?.
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
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