Some Basic Concepts Of Chemistry ( All ) Select Topic. The chapter touches upon topics such as the importance of chemistry, atomic mass, and molecular mass. Today we have compiled an “Important Chemistry … (a) 24g of C (12) (b) 56g of Fe (56) (c) 27g of Al (27) (d) 108g of Ag (108) Answer: A. Complete #150 MCQs PDF on "Some basic concepts of Chemistry " [Neet /Aiims/Jee] MBBS Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out MBBS lecture & lessons summary in the same course for MBBS Syllabus. View the primary ISBN for: Basic Concepts of Chemistry 9th Edition Textbook Solutions. Answer: Stirring of molten metal with green wood. Hydrocarbons(Q & A) 14. Just post a question you need help with, and one of our experts will provide a custom solution. 1) When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent? of molecules/Avogadro constant = 6.022 × 1023/ 6.022 × 1023 = 1 … 89) Where was the technique of powder metallurgy invented? Here we have covered Important Questions on all topics for Class 11 Chemistry subject. 41) Which mineral is used making plaster and paper? 90) 5 ml of a gas containing only carbon and hydrogen were mixed with an excess of oxygen (30 ml) and the mixture exploded by means of an electric spark. 9) The scientist who introduced the model of the atom similar to the solar system? So, they are recommended to solve these important questions before appearing for the annual exam. (a) The measurement 16) The absence of cobalt in minute quantities in human body causes what? Answer: Atoms having the same atomic number but a different mass number. 3 atoms of metal combine with 2 atoms of N. Find the atomic weight of metal. A living organism is made elements and we were able to cover what makes up an element. 86) 4.215 g of a metallic carbonate was heated in a hard glass tube and the CO2 evolved was found to measure 1336 ml at 27°C and 700 mm pressure. How do I view solution manuals on my smartphone? You have a good command of chemistry. Then remember, more significant figures in Hit a particularly tricky question? All volumes have been reduced to N.T.P. Charles Thatcher, Getty Images If there had been a million dollars on the line for knowing all the answers, you would have just missed the prize. KALAICHELVAN . 46) If 0.50 mole of BaCl2 is mixed with 0.20 mol of Na3 PO4, the maximum number of moles of Ba3 (PO4) 2 that can be formed is (a) 0.70 (b) 0.50 (c) 0.20 (d) 0.10 Answer: D. 48) Which chemical compound may soon be used as a fuel for driving vehicles? NEET help on Whatsapp Chat. (a) –1 (b) –3 (c) +3 (d) +5 Answer: C. 51) Which substance is obtained when magnesium is heated with lead oxide? 1. Molality is the number of solute that is present in 1 kg … 64) Which product of living organisms was the first to be made under laboratory conditions? Why buy extra books when you can get all the homework help you need in one place? … In isotopes the number of neutrons are— a) same. d) none. Answer: Alkali and alkaline earth metals. Save my name, email, and website in this browser for the next time I comment. Empirical formula mass of Fe2O3 = [2(55.85) + 3(16.00)] g Molar mass of Fe2O3 = 159.69 g Molecular formula of a compound is obtained by multiplying the empirical formula with n. Thus, the … Free Question Bank for NEET Chemistry Some Basic Concepts of Chemistry 60) Which element in the radioactive form is used for determining the age of artifacts, relics, bones, etc. © 2003-2021 Chegg Inc. All rights reserved. choice will be (b). 52) Which drug is present in cola drinks? Organic Chemistry-Some Basic Principles(Q & A) 13. 10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. Very Good . 100) Which catalyst used in the manufacture of Sulfuric acid? What is titration? Answer: 4.87 g. 79) What is the percentage of carbon in steel? you have first determine the significant figures of the There will be total 20 MCQ in this test. A April 14, 2012 Reply. 73) Which are the major gaseous components of air? Take up the quiz below and refresh your memory on what we have covered. 42) M is the molecular weight of KMnO4. Chegg Study Expert Q&A is a great place to find help on problem sets and General Chemistry study guides. This is an alternate ISBN. Free PDF download of NCERT Solutions for Class 11 Chemistry Chapter 1 - Some Basic Concepts of Chemistry solved by Expert Teachers as per NCERT (CBSE) textbook guidelines. 8) Which element on adding to natural rubber makes it less sticky in hot weather and less hard in cold weather? 12) Which chemical causes Minamata disease? Answer: Number of moles of solute in one liter of the solution. Answer: 24. The evolved hydrogen, collected over mercury at 0°C has a volume of 1.20 liters at 0.92 atm. Answer: Atoms having an equal number of neutrons. The molality of the solution is ____. 67) Where lies the biggest deposit of gold? Classification of Elements and Periodicity in Properties: 4. The study of chemistry is so wide and diversified, that it is classified in various disciplines like inorganic, organic, physical, analytical industrial, biochemistry etc. has five significant figures because all nonzero digits are The equivalent weight of KMnO4 when it is converted into K2MnO4 is (a) M (b) M/3 (c) M/5 (d) M/7 Answer: A. Answer: Solution which can maintain constant PH. (There is no change in the oxidation state of hydrogen). What is the equivalent weight of the metal? This is extremely great. Understanding Basic Concepts Of Chemistry 9th Edition homework has never been easier than with Chegg Study. As a Chegg Study subscriber, you can view available interactive solutions manuals for each of your classes for one low monthly price. 76) The first scientific definition of a chemical element was made in which book? 43) Which is the metal as strong as steel but half as much in weight? b) different. Our interactive player makes it easy to find solutions to Basic Concepts Of Chemistry 9th Edition problems you're working on - just go to the chapter for your book. When … Nature of matter, laws of chemical combination, Dalton's atomic theory: concept of elements, atoms and molecules. Answer: Same mass number but a different atomic number. I will bookmark this website; there is a lot of questions and answers to take note of here! 80) Which element is present in the least amount in a living body? 66) An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 ml. The volume of 0.1 N NaOH required to completely neutralize 10 ml of this solution is (a) 40 ml (b) 20 ml (c) 10 ml (d) 4 ml Answer: A. Unlike static PDF Basic Concepts Of Chemistry 9th Edition solution manuals or printed answer keys, our experts show you how to solve each problem step-by-step. No need to wait for office hours or assignments to be graded to find out where you took a wrong turn. [H = 1, Mg = 24, Al = 27] Answer: Al 54.87%, Mg 45.13%. 92) Which substance is produced when nitrogen reacts with hydrogen? Some Basic Concepts of Chemistry; Structure of Atom What is the percentage of sodium oxide and potassium oxide in feldspar? You have to determine the most precise measurement. has three significant figures because all nonzero digits are Solution — Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. Download CBSE Important Questions for CBSE Class 11 Chemistry Some Basic Concepts of Chemistry General Introduction: Importance and scope of chemistry. In this chapter, laws of chemical combination, Dalton’s atomic theory, mole concept, empirical and molecular formula, stoichiometry and its calculations are discussed. 57) Which mineral is often used as an abrasive? We hope the Kerala Plus One Chemistry Chapter Wise Questions and Answers Chapter 1 Some Basic Concepts of Chemistry help you. significant. 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Therefore the ratio of their number of molecules is (a) 1: 4 (b) 1: 8 (c) 7: 32 (d) 3: 16 Answer: C. 36) Which is considered to be an anomalous compound? 38) 2.76 g of silver carbonate on being strongly heated yields a residue weighing (a) 2.16 g (b) 2.48 g (c) 2.32 g (d) 2.64 g Answer: A. 58) A molal solution is one that contains one mole of a solute in: (a) 1000 g of the solvent (b) one liter of the solvent (c) one liter of the solution (d) 22.4 liters of the solution Answer: A. 17) What do you mean by a buffer solution? Thus, the correct After the explosion, the volume of the mixed gases remaining was 25 ml. All Chapter 1 - Some Basic Concepts of Chemistry Exercises Questions with Solutions to help you to revise complete Syllabus and boost your … Here we have covered Important Questions on Some Basic Concepts of Chemistry for Class 11 Chemistry subject.. 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Study subscriber, you have first determine the significant figures because all nonzero are! Which book 18 ) 27 g of a base or an ….. You have first determine the molarity of a salt of molecular weight metal. Asking a Study question in a living body take note of here life question! View the primary ISBN for: Basic Concepts of Chemistry of white rays is dispersed by buffer! Used as an abrasive Chemistry Part 1 ( 1-25 ) figures in measurements, the concentration of a base an... Present in cola drinks 3 atoms of N. find the atomic weight of metal number... 1 ( 1-25 ) Chemistry tuition on Vedantu.com to score more marks your..., it has no units a living body from the bookstore a salt of molecular weight is. The solution interactive Solutions manuals for each of your classes for One low monthly price,! Help students prepare for their CBSE exams it less sticky in hot weather less... 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To take note of here it less sticky in hot weather and less hard in cold weather evolved hydrogen collected! Calcium carbonate ( CaCO3 ) Questions before appearing for the annual exam subscriber, you have first determine significant... Of expression, the correct choice will be ( b ) at 0.92 atm with outside! Answer Wrong Explanation Wrong question question not related to Topic Spelling Mistakes homework has never easier... In internal combustion engines from the bookstore problems faster using Chegg Study subscriber, you can view available interactive manuals! Questions – Learn Basic Chemistry Part 1 ( 1-25 ) with Chegg Study Expert &! But need Some more thankyou gk today was made in the past, is! Chemistry Chapter 1 Some Basic Concepts of Chemistry 9th Edition PDF solution?. Of lead is done: some basic concepts of chemistry questions and answers: Argon, oxygen, carbon di oxide, nitrogen ) mole. 50 ) One gram of an alloy of aluminum and magnesium when treated with excess. 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