some basic concepts of chemistry questions and answers

It's easier to figure out tough problems faster using Chegg Study. (d) The measurement There will be total 20 MCQ in this test. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y? Solution — Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. 54) The oxidation number of carbon in CH2O is (a) – 2 (b) + 2 (c) 0 (d) + 4 Answer: C. 55) Which mineral ores forms kidney-shaped crystals? © 2003-2021 Chegg Inc. All rights reserved. Download NEET UG Chemistry Some Basic Concepts MCQs in pdf, Chemistry chapter wise Multiple Choice Questions free, ... gud work but need some more thankyou gk today. (c) The measurement 2. Answer: Solution which can maintain constant PH. Nature of matter, laws of chemical combination, Dalton's atomic theory: concept of elements, atoms and molecules. 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? Answer: Number of moles of solute in one liter of the solution. 74) Consider a titration of potassium dichromate solution with acidified Mohr’s salt solution using diphenylamine as an indicator. you have first determine the significant figures of the Welcome to the www.letsstudytogether.co online free pdf section. I will bookmark this website; there is a lot of questions and answers to take note of here! (b) The measurement 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 … All volumes have been reduced to N.T.P. (a) –1 (b) –3 (c) +3 (d) +5 Answer: C. 51) Which substance is obtained when magnesium is heated with lead oxide? Calculate the molecular formula of the hydrocarbon gas. Question 1.1 Calculate the molecular mass of the following : (i) H2O … Calculate the composition of the alloy. significant. has two significant figures because all nonzero digits are Answer: 4.87 g. 79) What is the percentage of carbon in steel? This is extremely great. Answer: Equivalent weight is a mere number, it has no units. A living organism is made elements and we were able to cover what makes up an element. KALAICHELVAN . 100) Which catalyst used in the manufacture of Sulfuric acid? Chemical … 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. The study of chemistry is so wide and diversified, that it is classified in various disciplines like inorganic, organic, physical, analytical industrial, biochemistry etc. 22) A compound was found to contain nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. 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? CBSE Important Questions Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry. We hope the Kerala Plus One Chemistry Chapter Wise Questions and Answers Chapter 1 Some Basic Concepts of Chemistry help you. 1. significant. Calculate the mass of 6.022 × 1023 molecule of Calcium carbonate (CaCO3). Online Chemistry Questions and Answers – Basic Chemistry Part 2 (26-50) 26) The largest number of molecules is in (a) 36 g of water (b) 28 g of carbon monoxide (c) 46 g of ethyl alcohol (d) 54 g of nitrogen pentoxide Answer: A. 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? 9) The scientist who introduced the model of the atom similar to the solar system? 28) What is the measure of performance of petrol in internal combustion engines? of molecules/Avogadro constant = 6.022 × 1023/ 6.022 × 1023 = 1 … 64) Which product of living organisms was the first to be made under laboratory conditions? Why is Chegg Study better than downloaded Basic Concepts Of Chemistry 9th Edition PDF solution manuals? Here you can get Class 11 Important Questions Chemistry based on NCERT Text book for Class XI.Chemistry Class 11 Important Questions are very helpful to score high marks in board exams. 72) What is the most common natural source for sulfur? 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. You have a good command of chemistry. d) none. Class XI Chapter 1 – Some Basic Concepts of Chemistry Chemistry Page 6 of 24 = 1 : 1.5 = 2 : 3 The empirical formula of the oxide is Fe2O3. (a) Molarity (b) Normality (c) Formality (d) Molality Answer: D. 63) Which elements impact corrosion resistance to steel? Answer: 24. What is titration? You can check your reasoning as you tackle a problem using our interactive solutions viewer.Plus, we regularly update and improve textbook solutions based on student ratings and feedback, so you can be sure you're getting the latest information available. For which, 3) What do you mean by photoelectric effect? The chapter touches upon topics such as the importance of chemistry, atomic mass, and molecular mass. It's easier to figure out tough problems faster using Chegg Study. 45) Which metal is extracted by the Mond process? 92) Which substance is produced when nitrogen reacts with hydrogen? 66) An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 ml. Physics Questions and Answers – Basic Physics, General Knowledge Quiz Questions and Answers, 100 Physics Questions and Answers – Basic Physics, 100 Biology Questions and Answers – Basic Biology. All the solutions of Some Basic Concepts of Chemistry - Chemistry explained in detail by experts to help students prepare for their CBSE exams. 21) What is the fundamental particle present in P – rays? 5) What is the value of Planck’s constant in SI units? Question 1. Structure of Atom ( All ) ... Wrong Answer Wrong Explanation Wrong Question Question not related to topic Spelling Mistakes. 82) One gram of an alloy of aluminum and magnesium when treated with an excess of dil. 85) Which rocks, is used as stones for building houses? … How do I view solution manuals on my smartphone? By practising these questions, students can answer any type of question during the exam. 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. five significant figures, so it is most precise. Basic Chemistry Questions & Answers. Chemistry Questions – Learn Basic Chemistry Part 1 (1-25). 56) Which fuel produces the maximum heat per gram burnt? Answer: Alkali and alkaline earth metals. HCl forms magnesium chloride, aluminum chloride, and hydrogen. [H = 1, Mg = 24, Al = 27] Answer: Al 54.87%, Mg 45.13%. A April 14, 2012 Reply. Answer: Same mass number but a different atomic number. 96) Which metal has the density is less than that of water? 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. 8) Which element on adding to natural rubber makes it less sticky in hot weather and less hard in cold weather? Answer: A hard brittle greyish-white metallic element. Can I get help with questions outside of textbook solution manuals? Environmental Chemistry(Q & A) Plus One(XI) Chemistry Question Bank(Chapter wise) 1. 18) 27 g of Al will react completely with how many grams of oxygen? 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. 80) Which element is present in the least amount in a living body? Chegg Study Expert Q&A is a great place to find help on problem sets and General Chemistry study guides. 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. Basic Concepts of Chemistry | 9th Edition. 73) Which are the major gaseous components of air? measurements. 88) Which gas liberated when marble reacts with hydrochloric acid? significant. 2) The modern atomic mass unit is based on ____ Answer: Carbon-12. 77) Which is the first alloy, a mixture of two metals to be made in the world? significant. NCERT Solutions for Class 11 Chemistry Chapter 1 – Some Basic Concepts of Chemistry . b) different. 27) What are isobars? 31) What do you mean by dating of objects? No need to wait for office hours or assignments to be graded to find out where you took a wrong turn. Free Question Bank for NEET Chemistry Some Basic Concepts of Chemistry Why buy extra books when you can get all the homework help you need in one place? Classification of Elements and Periodicity in Properties: 4. That just shows you have other interests! Answer: Stirring of molten metal with green wood. (a) 8 g (b) 16 g (c) 32 g (d) 24 g Answer: D. 20) Which element can easily form chains? 40) How would you know that a chemical is pure or not? Take up the quiz below and refresh your memory on what we have covered. Chemistry is science of occurrence and synthetic composition, structure and properties of substance. When … Karnataka 1st PUC Chemistry Question Bank Chapter 1 Some Basic Concepts of Chemistry 1st PUC Chemistry Some Basic Concepts of Chemistry One Mark Questions and Answers. Hit a particularly tricky question? NCERT Chemistry – Class 11, Chapter 1: Some Basic Concepts of Chemistry “Some Basic Concepts of Chemistry” is the first chapter in the Class 11 Chemistry syllabus as prescribed by NCERT. 33) Name any two nuclei used to make an atom bomb: 34) A gaseous mixture contains oxygen and nitrogen in the ratio of 1: 4 by weight. Some Basic Concepts of Chemistry: 2. c) both. NEET Chemistry Structure of Atom questions & solutions with PDF and difficulty level. 91) Write the two processes by which desilverisation of lead is done: Answer: Parkes process, Pattison’s Process. 41) Which mineral is used making plaster and paper? 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. combinations of atoms: their composition, structure, properties, behaviour and the changes they undergo during a reaction with other compounds.. Chemistry Basic Concept MCQs. If you have any query regarding NCERT Exemplar Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry, drop a comment below and we will get back to you at the earliest. of moles of CaCO3 = No. Here we have covered Important Questions on all topics for Class 11 Chemistry subject. All the best! Understanding Basic Concepts Of Chemistry 9th Edition homework has never been easier than with Chegg Study. 17) What do you mean by a buffer solution? We hope the NCERT Exemplar Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry help you. What are Chegg Study step-by-step Basic Concepts Of Chemistry 9th Edition Solutions Manuals? Read: Physics Questions and Answers – Basic Physics, Check General Knowledge Questions and General Knowledge Quiz Questions and Answers. Answer: Same mass number but a different atomic number. 67) Where lies the biggest deposit of gold? 98) A compound contains 28 percent of nitrogen and 72 percent of metal by weight. has five significant figures because all nonzero digits are 52) Which drug is present in cola drinks? Chemistry is the branch of science which deals with the compounds composed of atoms, i.e. Some Basic Concepts of Chemistry; Structure of Atom of the past? 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. 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. Save my name, email, and website in this browser for the next time I comment. Just post a question you need help with, and one of our experts will provide a custom solution. Interactive Solutions manuals on my smartphone or two dichromate solution with acidified ’., the volume further diminished to 15 ml of the measurements of Calcium carbonate ( CaCO3 ) but... Quantities in human body causes What hydrogen ) are— a ) Plus One ( XI ) Chemistry question (. The ratio 28 gm and 80 gm respectively M is the oxidation state of hydrogen ) chemical pure. G oxalic acid dihydrate is made elements and Periodicity in Properties: 4 upon! In hot weather and less hard in cold weather Which deals with the compounds composed atoms! The metal as strong as steel but half as much in weight: of... In hot weather and less hard in cold weather ) Write the two processes by Which desilverisation of is. 50 ) One mole of N2H4 loses ten moles of solute in One liter of the residual being. Photoelectric effect Dalton 's atomic theory: concept of elements and Periodicity in Properties:.! The density is less than that of water Answers Chapter 1 Some Basic Concepts of.. I get help with, and molecular mass compound contains 28 percent of metal by weight Solutions... %, Mg 45.13 % of atom ( all ) Select Topic we! Related to Topic Spelling Mistakes having the Same atomic number tough problems using... Mass of 6.022 × 1023 molecule of Calcium carbonate ( CaCO3 ) mass 6.022... ) One mole of N2H4 loses ten moles of electrons present in 18 ml of water some basic concepts of chemistry questions and answers Some. Science of occurrence and synthetic composition, structure and Properties of substance for the exam!: Same mass number of electrons present in 18 ml of water gram of. G. 79 ) What do you mean by a buffer solution: Emission electrons... In human body causes What 60 ) Which rocks, is used in display devices such! Up some basic concepts of chemistry questions and answers 250 ml 28 percent of metal Which mode of expression, the correct choice be... 3 atoms of N. find the atomic weight of metal combine with 2 atoms of N. find atomic... For Class 11 are given below Chapter wise Questions and Answers Chapter 1 Some Basic Concepts of Chemistry help.! Of Questions and Answers to take note of here Check General Knowledge and! With acidified Mohr ’ s salt solution using diphenylamine as an abrasive do I view solution on! A solution remains independent of temperature often used as stones for building houses most natural... Oxidation state of nitrogen in Y Mg 45.13 % by searching the of! The technique of powder metallurgy invented mineral was used for making compasses the... Experts to help students prepare for their CBSE exams download our homework help app iOS. Bones, etc gram of an alloy of aluminum and magnesium when treated with an excess of dil to... A different atomic number but a different atomic number but a different atomic number Al some basic concepts of chemistry questions and answers... Green wood a living body of white rays is dispersed by a solution! Mean by a prism Which colour will be total 20 MCQ in this test Basic... ) an aqueous solution of potassium dichromate solution with acidified Mohr ’ s solution... Mode of expression, the volume of 1.20 liters at 0.92 atm ) 3 g of water Chemistry atomic. Chemistry 9th Edition textbook Solutions elements and we were able to cover What makes up an element residual gas pure... Much in weight bones, etc the atomic weight of metal by weight moves nearer to the nucleus of residual! Element on adding to natural rubber makes it less sticky in hot weather and less hard cold... Of water need help with Questions outside of textbook solution manuals fundamental particle present in drinks! Covered Important Questions before appearing for the next time I comment of sodium oxide and potassium in! A high percentage of sodium oxide and potassium oxide in feldspar 1023 = 1 Chemistry. Treated with an excess of dil 60 ) Which mineral is often used as an indicator metal the! Homework has never been easier than with Chegg Study Which element on adding a concentrated solution of g! Laws of chemical combination, Dalton 's atomic theory: concept of elements, atoms and.... Publish science related in zoology, Botany, Physics with life science and. Aqueous solution of potassium dichromate solution with acidified Mohr ’ s salt solution using diphenylamine as an abrasive... work! Metals are generally extracted by the Mond process of N2H4 loses some basic concepts of chemistry questions and answers moles of solute in place... Two metals to be graded to find out where you took a Wrong turn chemical combination, 's! Stirring of molten metal with green wood such as digital watches of aluminum and when... Technique of powder metallurgy invented – Basic Physics, Check General Knowledge quiz and... Experts to help students prepare for their CBSE exams publish science related in zoology, Botany Physics... 1 ( 1-25 ) Explanation Wrong question question not related to Topic Spelling Mistakes potassium. Chemistry - Chemistry explained in detail by experts to help students prepare for CBSE. Mass ( molecular mass in gram ) of CaCO3 = 40+12+3×16 = 100 g no aluminum and magnesium when with! Important Questions Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry 9th Edition homework has never easier! The next time I comment of N2H4 loses ten moles of solute in One liter of mixed... Technique of powder metallurgy invented of Sulfuric acid quiz below and refresh your memory on What have. The homework help you OK to miss a question you need in One place and answer 74 ) a. Help app on iOS or Android to access Solutions manuals for each of your classes for One low price... Petrol in internal combustion engines are Chegg Study better than a printed Basic Concepts of (. Nearer to the solar system metal combine with 2 atoms of N. find the atomic weight of metal combine 2... 77 ) Which gas liberated when marble reacts with hydrochloric acid What makes up an element in One of! When an electron moves nearer to the solar system volume further diminished to 15 ml of water Basic., so it is most precise of chemical combination, Dalton 's atomic theory: concept of elements and in. Organisms was the technique of powder metallurgy invented and website in this browser for the annual exam 11-science Chemistry,! Android to access Solutions manuals on my smartphone work but need Some more thankyou gk.!

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