How are 0.5 ml of NaOH differents from 0.5 M of NaOH? The empirical formula of the compound = C3H4O4. Solve Multiple Choice Questions PDF for 12th Class to improve your speed and accuracy in the actual board exams. If the molecule is triatomic, what will be its atomic mass? Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download. Answer: Question 31. Molar mass of nitric acid HNO3= 1 + 14 + 48 = 63 gmol-1, Question 7. Chemistry Class 11 Important Questions are very helpful to score high marks in board exams.Here we have covered Important Questions on all topics for Class 11 Chemistry subject. or 1 u = 1/12 th mass of an atom of carbon 12. Answer: Question 3. What is an atom according to Dalton’s atomic theory? Mayank Uttam Created On: Aug 12, 2020 18:14 IST Determine the empirical formula of an oxide of Iron which has 69.9 % iron and 30.1 % dioxygen by mass. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We hope the given Karnataka 1st PUC Class 11 Chemistry Question Bank with Answers Solutions, Notes, Guide Pdf Free Download of 1st PUC Chemistry Textbook Questions and Answers, Model Question Papers with Answers, Study Material 2020-2021 in English Medium and Kannada Medium will help you. Question 14. Hence,C0, (iii) Here again, dioxygen is the limiting reactant. Now, 1000 g of sugar cost = Rs 6, Question 5. Define molality. (b) Gram atom in 1.4 grams of nitrogen (Atomic mass Mg = 24, N = 14) Jan 03,2021 - Chemistry Class 11- Notes, Questions, Videos & MCQs | JEE, NEET is created by the best Class 11 teachers for Chemistry Class 11 | Notes, Questions, Videos & MCQs preparation. How many significant figures are present in the following? Practising given Class 11 Chemistry Chapter wise Important Questions with solutions will help in scoring more marks in your Examinations. Gram molecular mass of (C12H22O11) = 12 x 12 + 22 x 1 = 16 x 1= 144 + 22 + 176 = 342 g (ii) According to the given reaction, 1 mol of A reacts with 1 mol of B 1.4g of N = 1/14 x 1.4 = 0.1 gram atom. Answer: It states that matter can neither be created nor destroyed. NCERT Exemplar Class 11 Chemistry is very important resource for students preparing for XI Board Examination. (iv) 5 mol A + 2.5 mol B (i) Express this in percent by mass The simplest whole number ratios of the different elements are: C:H:O::3:4:4 Answer: Question 5. Gram molecular mass of NaCl = 23 + 35.5 = 58.5 g Now, 1000 g of NaCl cost = Rs 2 (ii) Will any of the two reactants remain unreacted? 1 molecule of ozone (O3) = 3 atoms of oxygen. / NCERT Solutions for Class 11 / NCERT Solutions for Class 11 Chemistry NCERT Solutions for Class 11 Chemistry in PDF format for CBSE Board as well as UP Board updated for new academic year 2020-2021 onward are available to download free along with Offline Apps based on new Syllabus. ##check##Chapter 1 ; Content: Short and Long Answers | Solved Exercises | MCQs [Preview PDF Online ##eye##] [Direct Download PDF ##download##] Chapter 2 - Atomic structure. Answer:  Step I. The following data were obtained when dinitrogen and dioxygen react together to form compounds: Question 12. Question 32. Chapter Wise Important Questions Class 11 Chemistry. Browse further to download free CBSE Class 11 Chemistry Worksheets PDF. (ii) Skill of the person making the measurement. Round up the following upto three significant figures: it may help u, i love these group and i want to knw better, sir, can i have the solutions for this questions. 3 moles of C2H6 will C-atoms = 6 moles The Vapour Density of a gaseous element is 5 times that of oxygen under similar conditions. What mass of CaC03 is required to react completely with 25 mL of 0.75 M HCl? Chlorine is prepared in the laboratory by treating manganese dioxide (Mn02) with aqueous hydrochloric acid according to the reaction. Students can find the Important Questions of Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry compiled here on this page. Answer: Question 28. Chemistry has many topics. Students can solve NCERT Class 12 Chemistry Solutions MCQs Pdf with Answers to know their preparation level. These Worksheets for Grade 11 Chemistry, class assignments and practice tests have been prepared … Question 27. Question 12. Express the following in scientific notation: Given that the molar mass of the oxide is 159.8 g mol-1(Atomic mass: Fe = 55.85, O = 16.00 amu)Calculation of Empirical Formula. Answer: Question 10.In three moles of ethane (C2H6), calculate the following: (ii) Determine the molality of chloroform in the water sample. Multiple choice questions help to develop understanding of all key points of chapter. Class 10 Chemistry Chapter 1 Important Questions with Answers Chemical Reactions and Equations. Chapter-wise Important Questions for Class 11 Chemistry: Students can access the chapter wise Important Questions for Class 11 Chemistry by clicking on the link below. of this welding gas is found to weigh 11.6 g. Calculate (i) empirical formula, (ii) molar mass of the gas, and (iii) molecular formula. Question 6.Calculate: .•. Question 8. What is the S.I. Answer:  1 mole of CuS04 contains 1 mole (1 g atom) of Cu, Molar mass of CuS04= 63.5 + 32 + 4 x 16 = 159.5 g mol-1, Thus, Cu that can be obtained from 159.5 g of CuS04 = 63.5 g. Question 8. Chemical Reactions and Equations Class 10 Important Questions Very Short Answer Type. (ii) 1 mole of carbon is burnt in 16 g of dioxygen. Question 9. Answer: Question 34. Important questions guess papers, most expected questions and best questions from Chemistry have CBSE chapter wise important questions with the solution for free download in PDF format. (b) 1 gram atom of N = 14g; Question 2. (i) 28.7 pm (ii) 15.15 µs (iii) 25365 mg Students can also download CBSE Class 11 Chemistry Chapter wise question bank pdf and access it anytime, anywhere for free. (iii) 2 moles of carbon are burnt in 16 g of dioxygen. Conversion factor =60 s/(1min) Answer:  (i) The least precise term has 3 significant figures (i.e., in 0.112). By practising these questions, students can answer any type of question during the exam. Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 5 States of Matter with Answers Pdf free download. Answer: 0.5 ml of NaOH means 0.5 mole (20.0 g) of NaOH, 0.5M of NaOH means that 0.5 mole (20.0g) of NaOH are dissolved in 1L of its solution. Answer: We know that, 1 min = 60 s JEE Main 2020 & NEET 2020: Check important MCQs (with answers) from NCERT book of Class 11 Chemistry (Chapter 2 - Structure of Atom). By practising these questions, students can answer any type of question during the exam. Question 1. Question 21. Answer:  (a) 1 gram atom of Mg = 24g Long Answer Type Questions NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Name two factors that introduce uncertainty into measured figures. (i) In air, combustion is complete. .•. A volume of 10.0 L (measured at S.T.P.) Answer: Question 16. NCERT Solutions for Class 11 Chemistry Chapter 1 – Some Basic Concepts of Chemistry, lets the students solve and revise the whole syllabus very effectively. Answer:  Molecular mass of oxygen = 32 u. Mass ( ii ) determine the empirical formula of a to calculate the total number of atoms! On: Aug 12, 2020 18:14 IST Chapter wise Important Questions very short answer question! Of question during the exam g of dioxygen in which the mass of =! For all chapters in Class 11 Chemistry NCERT Solutions for Class XI Aug 12, 18:14! A simple whole number ratio on latest exam pattern in each of the atom can. Study Notes, Worksheet and we hope the NCERT Solutions for Class 11 Chemistry with Answers Pdf free.. Is six times the empirical formula is six times the empirical formula is as. Questions, students can find the Important topics for all chapters in Class 11 Chemistry NCERT Solutions for Class English. 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