Soul of Chemistry

                 CDS (Combined Defence Service)  Examination CDS (Combined Defence Service) Examination is conducted for recruitment of commissioned officer into the Indian Army, Navy and Air force wing. Selected candidates undergo training at the Indian military academy (IMA), Naval Academy and Airforce academy.    The union public service commission (UPSC) conducts the exam and prescribes CDS eligibility criteria and the syllabus when it notifies for the same.         Candidate must carefully read the eligibility criteria before filling in the form.      Unmarried / married male/female candidates who have graduation or engineering degree can apply.    The eligibility criteria include nationality, age limit, educational qualification and physical standards (height, weight, visual standards ....) etc.     This Examination is conducted twice a year in two stages: the written exam MCQ and the SSB interview. Candidates who qualify in the written examination are called for the SSB intervi

 National Defence Academy (NDA) Entrance Examination      National Defence Academy (NDA) entrance examination is conducted for admission into Army, Navy and Air force wing.    The union public service commision (UPSC) prescribes NDA eligibility criteria when it notifies for the same.         Candidate must carefully read the eligibilty criteria before filling in the form.      Unmarried male candidates who have completed their 12 or equivalent examinationcan apply.    The eligibility criteria include nationality, age limit, educational qualification and physical standards (height, weight, visual standards ....) etc.     The application form for 2021 (II) examination is to be released on Jun 9 and will continue till Jun 21.     This Examination is conducted twice a year in two stages: the written exam and the SSB interview. Candidated who qualify in the written examination are called for the SSB interview.     The exam consists of two papers: Mathematics (120 objective questions &

NDA (National Defence Academy) Previous Year Question Papers  Click on the links and open with google drive NDA - 2021 - I - General ability test NDA - 2021 - I - Mathematics NDA - 2020 - II - GAT (General ability test) NDA - 2020 - II - Mathematics Kindly Share with your friends Picture Credit: By Clintonpeter - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=84948291

  2 or 3 marks CHSE/CBSE Chemistry Questions and Solutions  (Topic: Solution)   1. State and explain  Henry's law. Ans:   The dependence of solubility of a gas in a solvent on pressure can be quantitatively expressed by Henry’s Law. This law can be expressed in a number of ways: (a)   T he solubility of a gas (in mol ltr -1 ) in a liquid at a particular temperature is directly proportional the partial pressure of the gas in equilibrium with the liquid at that temperature.       Mathematically, s α p   => s = k p,  where   s= solubility, Unit of  k = mol L -1  atm -1 (b)   The  amount of a gas dissolved (expressed in terms of mole fraction) in a definite volume of solvent at constant temperature is directly proportional to the partial pressure of the gas present in equilibrium with the solvent at that temperature.      Mathematically,  p g  = k H   X g     Where, KH is the Henry law constant. A gas having high solubity comparision to other has lower KH value. 2. What is relative