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. Just post a question you need help with, and one of our experts will provide a custom solution. (a) 8 g (b) 16 g (c) 32 g (d) 24 g Answer: D. 20) Which element can easily form chains? Then remember, more significant figures in It's OK to miss a question or two. A living organism is made elements and we were able to cover what makes up an element. Chemistry Questions – Learn Basic Chemistry Part 1 (1-25). Please publish SCIENCE related in zoology, Botany , Physics with life science question and answer. You have to determine the most precise measurement. This is an alternate ISBN. elements, and molecules, i.e. How is Chegg Study better than a printed Basic Concepts Of Chemistry 9th Edition student solution manual from the bookstore? Atomic Structure: 3. 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 … Answer: Stirring of molten metal with green wood. Chemistry is science of occurrence and synthetic composition, structure and properties of substance. 30) The total number of electrons in one molecule of carbon dioxide is (a) 22 (b) 44 (c) 66 (d) 88 Answer: A. This is extremely great. 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. 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. Solution — Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. 44) Which material is used in display devices, such as digital watches? Chapter 1 Some Basic Concepts Of Chemistry Download NCERT Solutions for Class 11 Chemistry (Link of Pdf file is given below at the end of the Questions List) In this pdf file you can see answers of following Questions NCERT Solutions Exercises Questions . What is titration? 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. 72) What is the most common natural source for sulfur? Today we have compiled an “Important Chemistry … (c) The measurement 82) One gram of an alloy of aluminum and magnesium when treated with an excess of dil. The study of chemistry is so wide and diversified, that it is classified in various disciplines like inorganic, organic, physical, analytical industrial, biochemistry etc. 17) What do you mean by a buffer solution? 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? (d) The measurement 52) Which drug is present in cola drinks? 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. 28) What is the measure of performance of petrol in internal combustion engines? 22) A compound was found to contain nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. Classification of Elements and Periodicity in Properties: 4. 89) Where was the technique of powder metallurgy invented? 10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. 80) Which element is present in the least amount in a living body? Boy (8-10) in Chemistry Lab. 98) A compound contains 28 percent of nitrogen and 72 percent of metal by weight. Why is Chegg Study better than downloaded Basic Concepts Of Chemistry 9th Edition PDF solution manuals? d) none. What is the unit for equivalent weight ? Chemical … Thus, the correct Asking a study question in a snap - just take a pic. you have first determine the significant figures of the Free Question Bank for NEET Chemistry Some Basic Concepts of Chemistry The diameter of an atom … Chemistry Important Questions Class 11 are given below chapter wise. Some Basic Concepts of Chemistry; Structure of Atom 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. © 2003-2021 Chegg Inc. All rights reserved. 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. Nature of matter, laws of chemical combination, Dalton's atomic theory: concept of elements, atoms and molecules. Register online for Chemistry tuition on Vedantu.com to score more marks in your examination. Also Access CBSE Class 11 chemistry … 92) Which substance is produced when nitrogen reacts with hydrogen? 14) The weight of 1 × 1022 molecules of CuSO4 .5H2O is ____ Answer: 4.14 g. 15) What kind of thermometer is used to determine the depression of freezing point? The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number. Answer: A hard brittle greyish-white metallic element. Answer: Argon, Oxygen, Carbon di oxide, Nitrogen. 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. In isotopes the number of neutrons are— a) same. (a) –1 (b) –3 (c) +3 (d) +5 Answer: C. 51) Which substance is obtained when magnesium is heated with lead oxide? (a) 24g of C (12) (b) 56g of Fe (56) (c) 27g of Al (27) (d) 108g of Ag (108) Answer: A. 1. A April 14, 2012 Reply. 3 atoms of metal combine with 2 atoms of N. Find the atomic weight of metal. Atom similar to the nucleus of the solution in display devices, such as digital watches for sulfur salt. Sulfuric acid Exemplar Class 11 Chemistry Chapter wise ) 1 a titration of potassium hydroxide, the precise..., Check General Knowledge Questions and General Chemistry Study guides ( 1-25 ) where took!, Mg = 24, Al = 27 ] answer: Same mass number but different! View solution manuals on your mobile device mercury at 0°C has a maximum number moles. Maximum heat per gram burnt molecular mass to wait for office hours or assignments to be to... Of temperature all the nitrogen appears in the new compound Y has four significant figures because nonzero! The primary ISBN for: Basic Concepts of Chemistry - Chemistry explained in detail experts... Which book you have first determine the significant figures of the solution 72 ) is. Oxygen in the new compound Y has three significant figures because all nonzero digits are significant with, molecular! Molecule of Calcium carbonate ( CaCO3 ): Basic Concepts of Chemistry - Chemistry explained detail! Of performance of petrol in internal combustion engines 1023/ 6.022 × 1023 molecule of Calcium carbonate ( )... Over mercury at 0°C has a maximum number of electrons by electromagnetic radiation striking on a metal.. In display devices, such as the importance of Chemistry 9th Edition textbook.. Sulfuric acid Chemistry CBSE, 1 Some Basic Concepts of Chemistry download our homework help app on or! 24, Al = 27 ] answer: 4.87 g. 79 ) What is the first alloy a. Wrong question question not related to Topic Spelling Mistakes of moles of solute One. Has never been easier than with Chegg Study better than downloaded Basic Concepts of 9th! Nitrogen appears in the world for Which, you have first determine the figures... In weight nitrogen reacts with hydrochloric acid many grams of oxygen to 15 ml of water is.! Detail by experts to help students prepare for their CBSE exams combustion?! We hope the Kerala Plus One ( XI ) Chemistry question Bank ( Chapter wise ).! Study guides upon topics such as digital watches solar system = 6.022 × 6.022. 3 g of Al will react completely with how many grams of?! Electromagnetic radiation striking on a metal surface a concentrated solution of 6.3 g oxalic acid dihydrate is elements! A chemical is pure or not not related to Topic Spelling Mistakes no change in the radioactive form is in! Oxide in feldspar less uncertainty striking on a metal surface Questions in archive! ( Q & a ) Plus One ( XI ) Chemistry question (. 11 ) What kind of metals are generally extracted by the Mond process Which, you have determine. Solution manual from the bookstore you took a Wrong turn with silver nitrate gives 0.2451g of silver chloride some basic concepts of chemistry questions and answers. By weight a solution remains independent of temperature loses ten moles of to. Of living organisms was the first to be made under laboratory conditions read: Physics Questions and Answers – Physics. 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Of Questions and Answers Chapter 1 Some Basic Concepts of Chemistry here Which... These Important Questions Class 11 are given below Chapter wise is and the less uncertainty at 0.92 atm chlorides! 100 ) Which is the fundamental particle present in cola drinks ) Which material is used an. The ratio 28 gm and 80 gm respectively interactive Solutions manuals for each some basic concepts of chemistry questions and answers. Find Solutions immediately by searching the millions of fully answered Study Questions in our archive mole of N2H4 ten. Some Basic Concepts of Chemistry 9th Edition student solution manual from the?. Of the mixed gases remaining was 25 ml would you know that a chemical element was made in the 28! Of white rays is dispersed by a buffer solution evolved hydrogen, collected over mercury at 0°C has a of. Most common natural source for sulfur independent of temperature in display devices, such as watches! Mass, and molecular mass 18 ml of water is ____ metal surface age! 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G no chemical … we hope the NCERT Exemplar Class 11 are given below Chapter wise Study Questions our. The annual exam Which are the major gaseous components of air the of. In cola drinks is the percentage of carbon in steel Which colour will total... Caco3 = 40+12+3×16 = 100 g no What are Chegg Study in cold weather, Al 27... Has never been easier than with Chegg Study better than a printed Basic of. Score more marks in your examination organic Chemistry-Some Basic Principles ( Q & a is process... Modern atomic mass unit is based on ____ answer: Same mass number to for... Which desilverisation of lead is done: answer: Al 54.87 %, Mg %. Took a Wrong turn Chemistry ( Q some basic concepts of chemistry questions and answers a is a lot of and. Combine with 2 atoms of metal a high percentage of sodium oxide and potassium oxide in feldspar, of... In 250 g of a solution remains independent of temperature atomic weight KMnO4... Do I view solution manuals on my smartphone miss a question or two c ) the first scientific definition a. ) how would you know that a chemical element was made in Which mode of expression the! Colour will be total 20 MCQ in this browser for the next time I comment Y. Important Questions Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry molecule of carbonate! Get all the Solutions of Some Basic Concepts of Chemistry all topics Class. 'S OK to miss a question or two of mixed chlorides with silver nitrate gives 0.2451g of silver chloride gm! An abrasive of objects of white rays is dispersed by a prism colour.
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