(ii) Both A and R are true but R is not a correct explanation of A. Chemistry Class 11 Important Questions are very helpful to score high marks in board exams. NEET Chemistry : Some Basic Concepts of Chemistry. Another box contains identical blue coloured balls, labelled as B, each weighing 5 grams. In the reaction 2A + 4B → 3C + 4D, when 5 moles of A react with 6 moles of B, then, Match the following physical quantities with units. NCERT Exemplar Class 11 Chemistry is very important resource for students preparing for XI Board Examination. of N/5 H 2 SO 4, 10 c.c. Question from very important topics are covered by NCERT Exemplar Class 11. Which of the species is not paramagnetic? (D) 18 moles of water, 3. 35.4 mL of HCl is required for the neutralization of a solution containing 0.275 g of sodium hydroxide. Explain it with two examples. Required fields are marked *. (D) 5 L, 5. How is the mole defined? (C) 18 grams of water What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL? This article talks about important concept, formulae and previous years' questions related to Basic Concepts of Chemistry for JEE Main and JEE Advanced Examination 2019. (A) 16:8:1 MCQs on Some Basic Concepts of Chemistry : 1. of N/10 HNO 3 are mixed together. (iv) Amount of Fe 2 O 3 produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess. (C) Ne2+ Assertion (A) : One atomic mass unit is defined as one twelfth of the mass of one carbon-12 atom. SOME BASIC CONCEPTS OF CHEMISTRY 3 A number of classical texts, like Atharvaveda (1000 BCE) mention some dye stuff, the material used wer e tur meric, madder, sunflower , orpiment, cochineal and lac. (iv) Results of student B are both precise and accurate. Elements X and Y combine to form two compounds XY and X2Y. Which of the following reactions is not correct according to the law of conservation of mass. Find the atomic weight of X and Y, if the weight of 0.1 moles of XY is 10g and 0.05 moles of X2Y is 9g (C) 6 L (A) 1.806 × 1023 Ans: It is a Branch of science deals with the study of composition, properties and interaction of matter. A vessel contains 1.6 g of dioxygen at STP (273.15K, 1 atm pressure). Some Basic Concepts of Chemistry's Previous Year Questions with solutions of Chemistry from JEE Main subject wise and chapter wise with solutions It … (i) Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2. Calculate the mass percent of calcium, phosphorus and oxygen in calcium phosphate Ca. (B) 7 L Give reason for your answer. (iv) The ratio of atoms of different elements in a compound is fixed. Which of the following solutions have the same concentration? (c) Give one example related to this law. Calculate, Calcium carbonate reacts with aqueous HCl to give CaCl. Chemistry Important Questions Class 11 are given below. These Some Basic Concept of Chemistry Handwritten Notes in Pdf will help you to prepare different competitive exams like GATE, PSUs and so on. (C) 60, 40 Chemistry Important Questions Class 11 are given below. 2. (D) 8:16:1, 9. What are the basic constituents of matter? Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements. Define the law of multiple proportions. The density of 3 molal solution of NaOH is 1.110 g mL. Here we have covered Important Questions on Some Basic Concepts of Chemistry for Class 11 Chemistry subject. (D) 10.8, Your email address will not be published.
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