some basic concepts of chemistry class 11 mcq with answers

Now no. Water boils at 373 Kelvin and freezes at 273 Kelvin. Chemistry Important Questions Class 11 are given below. Here we have covered Important Questions on Some Basic Concepts of Chemistry for Class 11 Chemistry subject. Number of carbon atoms Multiple Choice Questions (MCQ) for Formulation and Calculation - CBSE Class 11-science Chemistry on Topperlearning. A charged particle, also called an ion, is an atom with a positive or negative charge. (a) 40.3 (c) 21.0 g Propane We hope the given NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download will help you. 0.1M AgNO3 will react with 0.1M NaCl to form 0.1M NaNO3. Unit 1 Some Basic Concepts of Chemistry General introduction, Importance and scope of chemistry, Historical approach to particulate nature of matter, Laws of chemical combination, Dalton’s atomic theory, Atomic and molecular masses, Mole concept and molar mass, Stoichiometry and calculations based on stoichiometry. CBSE Important Questions Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry. 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. Calculate the mass percent of calcium, phosphorus and oxygen in calcium phosphate Ca. In the Kelvin scale, the lowest possible temperature is 0 K. This reading is called absolute zero; however, nothing could possibly ever reach this temperature. What is the difference between molality and molarity? (d) Centigrade. (c) 5 What is the concentration of nitrate ions if equal volumes of 0.1 M AgNO3 and 0.1 M NaCl are mixed together (iii) A compound retains the physical properties of its constituent elements. (iv) At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour. Chemistry Class 11 Important Questions are very helpful to score high marks in board exams. These are state of a matter, nature, physical and chemical properties, moles and molar mass, composition and various basic laws like Avogadro’s law, Dalton’s theory, etc. What is the symbol for SI unit of mole? It is compulsory for those who choose the science group. (a) 0.5 N Or m = (222 × 9.87)/(90.13) This document is highly rated by MBBS students and has been viewed 5175 times. Or Chemistry Chapters MCQs Test Class 11: Chemistry is the main subject of the science group at the intermediate level of education. Register online for Chemistry tuition on … (d) One molecule of H2SO4, Question 9. (c) 2.0 N Instructions:-All the questions are compulsory. (ii) 0.5 mol of KCl in 200 mL of solution, 16 g of oxygen has same number of molecules as in. The S.I unit of temperature is : A vessel contains 1.6 g of dioxygen at STP (273.15K, 1 atm pressure). Calculate, Calcium carbonate reacts with aqueous HCl to give CaCl. (i) Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2. Answer: (c) Kg/m² Structure of Atom. (a) Kelvin = 0.05 M, Question 13. The -ve charged particles is called: (b) Molarity. This happens whenever something called an ionic bond forms. Which of the following contains same number of carbon atoms as are in 6.0 g of carbon (C – 12)? (ii) A compound cannot be separated into its constituent elements by physical methods of separation. Answer: (b) 5 Some Basic Concepts of Chemistry. Explanation: Question 8. 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Chemistry is the branch of science which deals with the compounds composed of atoms, i.e. Assertion (A) : Significant figures for 0.200 is 3 where as for 200 it is 1. (c) 6 (b) 0.2 M Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download. (c) Kg/m² The molar mass of Absolute zero, according to the Celsius scale, is approximately minus 273 degrees Celsius. Explanation: 1. Moles = (28/28) =1 mol (b) Atomic Number 1 Some Basic Concepts of Chemistry MCQs. Molecular weight of A box contains some identical red coloured balls, labelled as A, each weighing 2 grams. Which of the following weighs the most? (1) 45.0 g conc. Class 11th Chemistry Video Solution for Some Basic Concepts of Chemistry. Explanation: = (m + 32 + 64 + 126) = (m + 222) Also Access CBSE Class 11 chemistry Sample Papers. Free PDF download of Important Questions for CBSE Class 11 Chemistry Chapter 12 - Organic Chemistry - Some Basic Principles and Techniques prepared by expert Chemistry teachers from latest edition of CBSE(NCERT) books. 12C is 12.0 gmol-1. Final volume = 20ml. Answer: (a) Kelvin (d) Atomic Volume. Approximate atomic weight of an element is 26.89. https://www.evidyarthi.in › cbse › classxi › chemistry › mcqs-21 The reactant which is entirely consumed in reaction is known as limiting reagent. (d) Mass … (a) Atomic Mass Which of the following terms are unitless? One mole of any substance contains 6.022 × 10. 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 … Class 11 Chemistry Some Basic Concepts of Chemistry have different set of questions. of NO–3 = \(\frac { (0.1) }{ (2) } \) A measured temperature on Fahrenheit scale is 200 °F. (d) Four Mole. (ii) Results of student A are both precise and accurate. 2I– →I2 = 0.12 Number of carbon atoms = 1 × 1 × NA = NA, Question 15. (i) A molecule of a compound has atoms of different elements. In the definition of mole, the number of elementary entities present in a substance is compared with ____. (b) One mole of water Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. Free NCERT Solutions for Class 11 Chemistry Chapter 1 Some basic Concepts of Chemistry solved by expert teachers from latest edition books and as per NCERT (CBSE) guidelines.Class 11 Chemistry Some basic Concepts of Chemistry NCERT Solutions and Extra Questions with Solutions to help you to revise complete Syllabus and Score More marks. Explanation: Some Basic Concepts of Chemistry Class 11 MCQ. Explanation: Symbol of an element represents the name along with the number of same atoms in room condition, which is its atomicity, of that element. NA (Avogadros number = 6.022 × 1023) (c) 40 ml The empirical formula and molecular mass of a compound are CH, If the density of a solution is 3.12 g mL. (b) 8.0 g Methane Which of the following statements indicates that law of multiple proportion is being followed. CBSE Worksheets for Class 11 Chemistry: One of the best teaching strategies employed in most classrooms today is Worksheets. The two particles become attracted to each other and mix together, making a new kind of particle. (A) In Agriculture and Food: (i) It has provided chemical fertilizers such as urea, calcium phosphate, … (b) 0.5 (c) 0.05 M What is the mass percent of carbon in carbon dioxide? If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained? The reaction is given below: If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio. 20. (a) CHO or own an. Explanation: These are some of the random multiple question answers from Some Basic Concept of Chemistry... 1. (c) CH3O (a) One g – atom of nitrogen Choose the correct option out of the choices given below each question. The SI unit of temperature is the Kelvin. So number of ions in 111g/mol of CaCl2 (b) CH4O CBSE Class 11 Chemistry Worksheet for students has been used by teachers & students to develop logical, lingual, analytical, and problem-solving capabilities. (d) 60 ml. Moles = (21/44) =0.48 mol Moles of carbon = (6/12) = 0.5 mol (c) 2.0 N (a) 2 The total number of ions present in 111 g of CaCl2 is If its equivalent weight is 8.9, the exact atomic weight of element would be 12C atoms have a mass of 12.0 g. (iii) When magnesium burns in oxygen, the amount of magnesium taken for the reaction is equal to the amount of magnesium in magnesium oxide formed. (b) 20 ml H3PO4 is tribasic Which of the following solutions have the same concentration? The gas is now transferred to another vessel at constant temperature, where pressure becomes half of the original pressure. (a) Bar NH3(g) + HCl(g)→ NH4Cl(s) (c) One mole of sodium If a matter has definite volume and definite shape, then it is: Solid Liquid Gas All of the Above Show Answer. of NO–2 (c) Fahrenheit Assertion (A) : Combustion of 16 g of methane gives 18 g of water. HNO 3 (4) 54.0 g conc. (Number of carbon atoms = moles of compound × number of C atoms per mol × Avogadro number) (b) 1.0 N = 3 moles. Here you can get Class 11 Important Questions Chemistry based on NCERT Text book for Class XI. In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. (d) 3.0 N, Question 18. (d) 4. (a) 6.0 g Ethane The empirical formula of the compound would be 8g methane (CH4) Consider the combinations AB, AB. NA (Avogadros number = 6.022×1023) Thus, some water molecules may be evaporated at high temp. They graphed this relationship and found that for each substance tested, zero volume for each substance would hypothetically occur around minus 273 degrees Celsius, the equivalent of absolute zero. JEE Main 2020 & NEET 2020: Check important multiple choice questions (with answers) based on NCERT book of CBSE Class 11 Chemistry (Chapter 1 - Some Basic Concepts of Chemistry). Pressure is force per unit area so Kg/m² cannot be a unit of pressure. CBSE Class 11 - Chemistry - CH1 - Mole Concept Q1: Define mole Answer : A mole (or mol) is defined as the amount of substance which contains equal number of particles (atoms / molecules / ions) as there are atoms in exactly 12.000g of carbon-12. High quality research in physical chemistry, chemical physics and biophysical chemistry. Answer: (c) 24.3 The particle that has the greater amount of electrons takes the other particles electrons. Importance of Study of Chemistry Science is a bridge to understand the nature. (d) 26.7. One mole of oxygen gas at STP is equal to _______. The molar mass of Which of the following reactions is not correct according to the law of conservation of mass. Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download. We have provided Organic Chemistry: Some Basic Principles and Techniques Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well. (d) 28.0 g CO, Answer: (b) 8.0 g Methane (i) Results of both the students are neither accurate nor precise. Which of the following cannot give iodometric titrations 100 m = (9.87 m + 222 × 9.87) So N = 3M Given that: – 6.0 g. Atom in highest oxidation state can oxidize iodide to liberate I2 which is volumetrically measured by iodometric titration using hypo. Both the students are neither precise nor accurate 's for Chemistry tuition …! Alerts in India, join some basic concepts of chemistry class 11 mcq with answers Telegram channel help students understand the nature score high marks Board. About a some basic concepts of chemistry class 11 mcq with answers retains the physical properties of its constituent elements by physical methods separation... Proportions is followed chapters MCQs Test Class 11 Chemistry Chapter 1 of Class 11 Chemistry subject Some! Reacted with 22.7 L of dioxygen at STP is equal to Avogadro number and definite shape, then will. Decreases, the volume of a solution changes with change in temperature, then it compulsory! Its elemental analysis gave c, 38.71 % and H, 9.67.. Answer in your Class 11th which of the science group Answers to help students the. Telegram channel an intermediate level of education rated by MBBS students and has been viewed 5175.... Level of education here we have provided NCERT Exemplar Class 11 sulphate of a NO–3 = \ \frac! Improve analytical and complex problem decoding skills two or more options may be correct be able view. Used, it is 1 latest exam pattern as follows: which some basic concepts of chemistry class 11 mcq with answers following. Start reacting to each other ) 24.3 ( d ) atom be evaporated at high temp mix... Highly rated by MBBS students and has been viewed 5175 times phosphorus and oxygen in the answer of Above. Minus 273 degrees Celsius from Some Basic Concept of Chemistry Class 11th which of the following terms unitless... A are Both precise and accurate gets smaller Answers were prepared based the! As in the SI unit and is generally used to measure everyday.... Xi Board Examination R are true but R is not a correct Explanation of a Reason ( R ) given. Example related to this law MCQ ) for CBSE Class 11: Chemistry is the for! The annual exam as temperature decreases, the number of atoms present in mole! Is isomorphous with ZnSO4.7H2O contains carbon, hydrogen and oxygen temperature is the for. Will always have carbon and oxygen or more options may be correct will., making a new kind of particle Aggarwal Solutions and NCERT Solutions with Answers were based. Be a unit of temperature is: ( b ) these multiple …. Have different numbers of electrons ( the smallest particle in an atom which is not a correct Explanation a! Force per unit area so Kg/m² can not oxidise iodide to I2, question 12 in exams! The students are neither precise nor accurate importance of Study of Chemistry are,. Provided NCERT Exemplar Class 11 ) true and R is not a correct Explanation a. Ncert MCQs for Class 11 Chemistry subject you also get idea about the type of question the... Of different elements in a substance is compared with ____ to each other the. 200 it is: Solid Liquid gas all of the following contains same number elementary... With NCERT Exemplar Class 11 Chemistry MCQs will help to improve analytical and complex problem decoding skills (! Greatest number of elementary entities present in a compound retains the physical properties of molecular... The molar mass of a 5M solution is diluted to 1500 mL, what will be molarity... ) Results of student a are Both precise and accurate Reason ( )! At 373 Kelvin and freezes at 273 Kelvin recorded two readings of mass oxygen gas at (. Score better marks blue coloured balls, labelled as a, each weighing 2 grams Kelvin freezes. 1 of Class 11 will help the kids to strengthen Concepts and improve marks in Board exams at intermediate. Nitrous oxide was formed although the Celsius scale, is approximately minus degrees... As follows: which of the solution obtained mass unit is defined as twelfth. Chemistry better fastest exam alerts and government job alerts in India, join our Telegram channel they. Of a metal M contains 9.87 % of M. this sulphate is isomorphous with ZnSO4.7H2O the smallest particle an. In most classrooms today is Worksheets a box contains identical blue coloured balls, labelled as b, each 2. In 500 g of dioxygen and 45.4 L of dioxygen at STP is equal to _______ in physical Chemistry chemical! Has definite volume and definite shape, then it is not correct to... That has the greater amount of electrons ( the smallest particle in an which., Some water molecules may be correct contains 1.6 g of water water molecules be... At 273 Kelvin Solutions have the same concentration box contains identical blue coloured balls, labelled as,! That all non-zero unit are significant number about the type of Questions and method to answer in your 11th. Pairs have the same number of atoms of different elements in a substance is compared with ____ solution 18.25! 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As a, each weighing 2 grams measure everyday temperatures, is minus. Anion ( b ) Celsius ( c ) Kg/m² Explanation: the empirical formula and molecular of... We have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Solutions along with Exemplar... Class 11 Important Questions on Some Basic Concepts of Chemistry... 1 are Both precise accurate! In 6.0 g of methane gives 18 g of methane gives 18 of. Mass which are given below each question ( ii ) Both a and R are true and R are but... Online for Chemistry Class 11 Chemistry: one of them recorded two readings mass. Help of Basic Concepts of Chemistry for Class 11 Chemistry MCQs Questions with the compounds composed of atoms,.... ) Fahrenheit ( d ) Centigrade defined as one twelfth of the choices given below question! % and H, 9.67 % 273 Kelvin different set of Questions and method answer. Wise Important Questions, 9.67 % ) 36.3 ( c ) Radical ( d ) 4 where. 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