chemistry question and answer with explanation

This is the general knowledge questions and answers section on "Chemistry" with explanation for various interview, competitive examination and entrance test. ... 24 Complete Exams Explained. The atomic mass unit or amu is defined as 1/12 the mass of the... Latest answer posted March 18, 2011 4:21 pm UTC. One molecule of water has 2 atoms of hydrogen and one atom of oxygen. Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed. Which one of the following is not a mixture, Among the given nutrients, milk is a poor source of, Copyright © 2019 Sawaal.com | All Rights Reserved. That means no chemical bonding has occurred between the substances within the mixtures. Nitrogen oxides, including NO and NO2, are produced as a result of combustion in a car engine. For example, water is always composed... Latest answer posted October 22, 2015 12:44 am UTC. In this section you can learn and practice General Knowledge Questions based on "Chemistry" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) We can classify them according to phases: Solid, liquid and gas. The number of moles of solute present in 1 kg of a solvent is called its, The most electronegative element among the following is, The metal used to recover copper from a solution of copper sulphate is, The number of d-electrons in Fe2+ (Z = 26) is not equal to that of, The metallurgical process in which a metal is obtained in a fused state is called, © 2009 - 2020 by IndiaBIX™ Technologies. Boron cannot form which one of the following anions? The chemical equation for this reaction would be... Latest answer posted October 30, 2012 5:18 pm UTC. Equivalent conductance is defined as the conductance of an electrolyte solution containing one gram equivalent of the electrolyte. The... Latest answer posted November 19, 2012 5:41 pm UTC. Iron can form chemicals in which it is capable of existing in many oxidation states ranging from -2 to... Latest answer posted September 5, 2012 5:07 am UTC. Here keep in mind that Ag is silver, K is potassium, B is barium and K is potassium. PF3 has trigonal bipyramidal molecular geometry and can be polar or nonpolar depending on the binding locations of the flourine... Latest answer posted June 5, 2009 5:52 am UTC. It contains 0.12 to 0.25% carbon and so it is the purest form of iron. ... Regents Exams with Answers and Explanations (Multiple Choice only) Chemistry Regents August 2008. The volume of a given amount of gas is related to the temperature and pressure by the Ideal Gas Law by P*V=n*R*T or V = k*T/P The volume is directly proportional to the temperature and inversely... Latest answer posted November 9, 2011 10:57 am UTC. Unit of spceific conductance k is Siemens / m. Now, required equivalent conductance unit is Siemens.m2/equivalent . The concentration of a solution can be expressed in many way, one of them is molarity or the molar concentration. Chemists use many different tools and technologies to perform their work. Our summaries and analyses are written by experts, and your questions are answered by real teachers. with full confidence. Classifying elements is necessary in order to determine their nature and the possible reactions. Ionic compounds are formed due to the electrostatic force of attraction between oppositely charged ions. Bromine with an atomic number of 35 acquires one electron to attain 36 electrons. Boyle's law states that for a fixed amount of gas in an enclosed system at constant temperature, pressure and volume are inversely proportional. No answer description available for this question. Wrought Iron is the purest form of iron. We should be careful when defining "properties" - chemical properties are probably the ones that an instructor would be taking into consideration. Chromatography is a very common lab technique that is used to separate different components of a complex mixture. The first ionization energy of potassium is 419 kJ/mol while calcium's is 376 kJ/mol. Report Error You can easily solve all kind of General Knowledge questions based on Chemistry by practicing the objective type exercises given below, also get shortcut methods to solve General Knowledge Chemistry problems. Discuss, Hydrogen bomb is based on the principle of. Solved examples with detailed answer description, explanation are given and it would be easy to understand. Solved examples with detailed answer description, explanation are given and it would be easy to understand. The number of electrons is equal to... Latest answer posted December 13, 2011 8:57 pm UTC. The chemical equation when aluminum reacts with oxygen is: 4Al + 3O2 --> 2Al2O3 3 moles of O2 react with 4 moles of Al to give 2 moles of Al2O3. ©2020 eNotes.com, Inc. All Rights Reserved. | Copyright | Terms of Use & Privacy Policy, Contact us: info.india- @ -bix@gma@il.com. The molar... Latest answer posted March 4, 2012 11:24 am UTC. The equation of the chemical reaction between potassium (K) and oxygen (O2) is: 4K + O2 --> 2K2O From the equation it is seen that 4 moles of potassium react with with one mole of oxygen gas... Latest answer posted August 15, 2012 5:38 am UTC. Welcome to the www.letsstudytogether.co online free pdf section. The compounds you would like to know the names of are AgNO3, K2S, BaS, Agl and Kl. If you want to separate the two, first mix both salt... Latest answer posted January 22, 2014 6:09 pm UTC. According to Fajans rule, cation with greater charge and smaller size favours covalency. Examples of nonmetals H , O , N , C , S , P , F , Cl , Br , I. Pure combustion takes hydrocarbons (gasoline) and pure oxygen (O2) and produces CO2 and H2O. Covalent compounds are formed between nonmetals. Bromine is the third lightest halogen. We can calculate the concentration of H+ ions in a 0.1 M solution of acetic acid by using the pKa or ionization constant which for any compound is the negative logarithm of the equilibrium... Latest answer posted August 31, 2011 1:26 am UTC. eNotes.com will help you with any book or any question. A 4 M solution of lithium bromide has to be made with 100 grams of lithium bromide. All atoms are made of three particles: electrons, protons and neutrons. Chemistry General Knowledge questions asked in many competitive exams and also chemistry GK is important for SSC and Banking exams. The electronic configuration of Palladium is 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10. Prepare for competitive exam by practice chemistry question and answers.

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