Question 6.Calculate: Molar mass of sodium acetate is 82.0245 g mol-1, Answer: 0.375 M aqueous solution means that 1000 mL of the solution contain sodium acetate = 0.375 mole, Question 6. Pressure is determined as force per unit area of the surface. Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 5 States of Matter with Answers Pdf free download. 3 moles of C2H6 will C-atoms = 6 moles or 1 u = 1/12 th mass of an atom of carbon 12. (iii) Number of molecules of ethane The simplest whole number ratios of the different elements are: C:H:O::3:4:4 I.Very Short Answer Type Questions A compound on analysis was found to contain C = 34.6%, H = 3.85% and O = 61.55%. produced from the combustion of 1 mole of carbon = 44 g. (ii) As only 16 g of dioxygen is available, it can combine only with 0.5 mole of carbon, i.e., dioxygen is the limiting reactant. Answer: (i) Reliability of measuring instrument. Answer: Molecular formula = (Empirical formula)n where n is positive integer. .•. Question 21. Chemical Reactions and Equations Class 10 Important Questions Very Short Answer Type. If the molecule is triatomic, what will be its atomic mass? Define law of conservation of mass. Question 8. Answer: The balanced equation for the combustion of carbon in dioxygen/air is Chapter 4 Chemical Bonding and Molecular Structure. Students can find the Important Questions of Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry compiled here on this page. ##check##Chapter 1 ; Content: Short and Long Answers | Solved Exercises | MCQs [Preview PDF Online ##eye##] [Direct Download PDF ##download##] Chapter 2 - Atomic structure. Answer: We know that, 1 min = 60 s Ravi Joshi March 20, 2015 at 6:09 pm. Download latest MCQs for Class 11 Chemistry in pdf free Question 9. So, they are recommended to solve these important questions before appearing for the annual exam. Answer : Cathode rays produced in the discharge tube fall upon fluorescence.Fluorescence has different … A volume of 10.0 L (measured at S.T.P.) Question 5. Therefore,C02 produced from the combustion of 1 mole of carbon = 44 g.(ii) As only 16 g of dioxygen is available, it can combine only with 0.5 mole of carbon, i.e., dioxygen is the limiting reactant. Jan 02, 2021 - Solved Subjective Questions - Stoichiometry, Class 11, Chemistry | EduRev Notes is made by best teachers of Class 11. Answer: Step I. Answer: Question 25. How many oxygen atoms are there in 18 g of water? If ten volumes of dihydrogen gas reacts with five volumes of dioxygen gas, how many volumes of water vapour could be produced? Question 1. Hence, the answer should have 3 significant figures. Long Answer Type Questions If you have any query regarding NCERT Solutions for Class 11 Chemistry Chapter 1 Some basic Concepts of Chemistry, drop a comment below and we will get back to you at the earliest. Question 1. 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. of carbon and oxygen atoms present in 11.2 litres of C02 at N.T.P. Download the Chapterwise MCQ Quiz Questions of Class 12 Chemistry PDF through quick links available. Step 2. If the density of methanol is 0.793 kg L -1, what is its volume needed for making 2.5 L of its 0.25 M solution? The Vapour Density of a gaseous element is 5 times that of oxygen under similar conditions. Question 26. Hence, the given data obey the law of multiple proportions. Answer: S.I. Dear sir, Please put more question papers on every chapter and do add new chapters, as are needed. Question 8. or one ‘u’? The stoichiometric coefficients are 1, 3 and 2 respectively. sir can you give helpful question-bank with answers to prepare for Gulf Sahodaya Saudi chapter for class 11 ? What is the S.I. 1000 mL of 0.75 M HCl contain HCl = 0.75 mol = 0.75 x 36.5 g = 24.375 g Answer: Question 34. Click here to learn about the solutions for Chapter 1 – Some Basic Concepts of Chemistry. (v) 500.0 (vi) 2.0034 The level of contamination was 15 ppm (by mass). Step II. (iii) 100 atoms of A + 100 molecules ofB Use the data given in the following table to calculate the molar mass of naturally occurring argon. These’are in the ratio 1 : 2 : 1 : 5 which is a simple whole number ratio. II. Class 11 Chemistry Chapter 12 Organic Chemistry Some Basic Principles And Techniques Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. Chemistry help you atomic theory heating decomposes to give KCl and 02, in ). Understanding of all key points of Chapter atom according to the latest exam pattern 3... +H2O ( L ) of methane B is the ultimate particle of Matter with Answers Pdf download... 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