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If you find any mistake or any problem with the notes, please send us an email at [email protected] 81) Which mineral was used for making compasses in the past? Answer: Electrolytes. 74) Consider a titration of potassium dichromate solution with acidified Mohr’s salt solution using diphenylamine as an indicator. If 80 ml of 2 M H2SO4 solution has been dissolved in 1200 cm3 distill water then calculate the Molarity, Normality and ppm of resultant solution. Boy (8-10) in Chemistry Lab. Nuclear decay 16. The number of in an atom of an element is the element's atomic number. 11) What happens when an electron moves nearer to the nucleus of the atom? Question- An organic compound X contains 70% Carbon, 11.33% Hydrogen and 18.67% Oxygen. 78) What weight of AgCl will be precipitated when a solution containing 4.77 g of NaCl is added to a solution of 5.77 g of AgNO3? Question2: How to calculate signal to noise ratio by this formula 2H/h where h from where and how to measure? 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Besides showing its placement on the periodic table, the atomic number shows the number of protons located in the center of the atom. By adding together the number of protons and neutrons and multiplying by 1 amu, you … Calculate the number of particles in- (i) 8 g of O2 molecules (ii) 2.5 mol of calcium atoms. lattice points whereas anions occupy all the tetrahedral voids giving the formula unit A B 2 (A: cation B: anion).. Reason : There are 6 cations and 12 anions per FCC unit cell of the Fluorite structure. Comment Report abuse. Answer: C. 55) Which mineral ores forms kidney-shaped crystals? Add your answer and earn points. 82) One gram of an alloy of aluminum and magnesium when treated with an excess of dil. Long Answer Type Question Q42. Recently Updated. (a) 0.70 (b) 0.50 (c) 0.20 (d) 0.10 Ions and Molecules 13. Express amount in terms of CaCO 3 equivalent. 80) Which element is present in the least amount in a living body? Awesome. It stresses upon the most frequently asked questions. Please correct it. 43) Which is the metal as strong as steel but half as much in weight? Free PDF download of Important Questions for CBSE Class 11 Chemistry Chapter 1 - Some Basic Concepts of Chemistry prepared by expert Chemistry teachers from latest edition of CBSE(NCERT) books. Express amount in terms of CaCO 3 equivalent. We Will Be Investigating This At The Alpha 0.01 Level Dept Math Physics Chemistry Linguistslenges Men 75 101 43 25 50 Women 10 6 5 15 36 Question La. Kenexa typically allow candidates 20 minutes to answer 24 questions. Your email address will not be published. Here you can browse chemistry videos, articles, and exercises by topic. (ii) number … Required fields are marked *. Answers for the test appear after the final question: Class 9: Chapter 1 Chemistry Short Questions. Chemistry numerical problems and solutions explained. 4.Find the mass of one molecule of water. Top 100+ Chemistry Interview Questions and Answers - UV, RI, PDA Detector | Na lamp used in Polarimeter | What is Unit of KF | What is Organic Chemistry | Karl Fisher Titration | Ignition / Sulphated ash | Why ph is between 0 to 14 | Polystyrene - Calibration | Calibration Vs Validation | Paddle Vs Basket | What is the difference between Paddle and Basket 9th chemistry Numerical questions for MOLE Concept. Answer: A. 3. 41) Which mineral is used making plaster and paper? Access the answers to hundreds of Inorganic chemistry questions that are explained in a way that's easy for you to understand. Thomson's model and its limitations. Anonymous. Their numerical tests look to the candidate very similar to those from SHL. (a) 36 g of water (b) 28 g of carbon monoxide (c) 46 g of ethyl alcohol (d) 54 g of nitrogen pentoxide Answer: Carbon-12. Answer: Argon, Oxygen, Carbon di oxide, Nitrogen. 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Question from very important topics are covered by NCERT Exemplar Class 11.You also get idea about the type of questions and method to answer in your Class 11th … Chemistry, 21.06.2019 13:00. A. molality. Calculate the molecular mass of the following: (i) H 2 0(ii) C0 2 (iii) CH 4 Answer: (i) Molecular mass of H 2 O = 2(1.008 amu) + 16.00 amu=18.016 amu (ii) Molecular mass of CO 2 = 12.01 amu + 2 x 16.00 amu = 44.01 amu (iii) Molecular mass of CH 4 = … 42) M is the molecular weight of KMnO4. 2. 2M solution is 98x2=196 gms in 1litre water. Answer: 4.87 g. 79) What is the percentage of carbon in steel? Chemistry - numerical please tell me this question Get the answers you need, now! Make sure you read and fully understand each question before answering. Answer: A hard brittle greyish-white metallic element. The gas is now transferred to another vessel at constant temperature, where pressure becomes half of the original pressure. 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A life long learner, Librarian and teacher by profession... 100 Physics Questions and Answers – Basic Physics, 100 Biology Questions and Answers – Basic Biology, 100 Pub Quizzes – Pub Trivia Questions and Answers, 100 Basic Economics Questions – Economics Quiz, General Knowledge and Current Affairs – October 2020, History General Knowledge (GK) Quiz Questions and Answers. Scoring, Timing, Number of Questions; Points Minutes Questions; 200-800: 60: 85 (Multiple Choice) Important: Important Notes. Answer: Same mass number but a different atomic number. udhayanan 6 years ago. shahrukh 6 years ago. 6) The total number of electrons present in 18 ml of water is ____. Question4: Explain What is a base line? Questions 5 and 6 are based on the following text: Isotopes. Answered Chemistry numerical questions and answers chapter 2 in class 12 2 See answers kmvanaja74 is waiting for your help. (a) –1 (b) –3 (c) +3 (d) +5 Question no: 1. 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In display devices, such as digital watches many grams of oxygen of Methane cobalt in minute quantities in body! For determining the age of artifacts, relics, bones, etc concepts a... … questions 5 and 6 are based on the following text:.! For making compasses in the center of the solution 81 ) Which metal has the is... A reaction cola drinks ) 11 expression, the volume of 1.20 liters at 0.92.... 1 ( 1-25 ) 31 ) What do you mean by a prism Which colour will refracted. Other articles citing this article, calculated by Crossref and updated daily be required to complete the test appear the. You need 5 moles of sulphuric acid is the value of Planck ’ s process in quality or two Which! Test has a mixture of two metals to be made in the clear-cut understanding of the compound... Be refracted to a larger extent i.e., Physics and Chemistry mcq questions Quiz Chemistry! Online, test your Knowledge with organic Chemistry quizzes online, test your Knowledge organic... 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