CBSE
Metal and Non-Metal, Chapter-3, Class 10, CBSE, NCERT Exemplar
Multiple Choice Questions 1. Which of the following property is generally not shown by metals? (a) Electrical conduction (b) Sonorous in nature (c) Dullness (d) Ductility Soln: Answer is (c) Dullness 2. The ability of metals to be drawn into thin wires is known as (a) ductility (b) malleability (c) sonorousity (d) conductivity Soln: …
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Short Answer Questions – 3 marks – Solutions – Chapter 2 CBSE Class 12 Chemistry
Solutions – Chapter 2 CBSE Class 12 Chemistry Short Answer Questions – 3 marks Q. 1. At 25°C the saturated vapour pressure of water is 3.165 kPa (23.75 mm Hg). Find the saturated vapour pressure of a 5% aqueous solution of urea (carbamide) at the same temperature. (Molar mass of urea = 60.05 g mol–1) …
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Short Answer Questions – 2 marks – Solutions – Chapter 2 CBSE Class 12 Chemistry
Solutions – Chapter 2 CBSE Class 12 Chemistry Short Answer Questions – 2 marks Q. 1. State Henry’s law. Write its one application. What is the effect of temperature on solubility of gases in liquid? [CBSE (F) 2016] Ans. It states that the partial pressure of a gas in vapour phase (p) is proportional to …
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Very Short Answer Questions Solutions – Chapter 2 CBSE Class 12 Chemistry
Solutions – Chapter 2 CBSE Class 12 Chemistry Very Short Answer Questions Q. 1. Define mole fraction. [CBSE Delhi 2012] Ans. Mole fraction of a component in a solution may be defined as the ratio of moles of that component to the total number of moles of all the components present in the solution. Q. …
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Case Study Question 2 on Solutions – Chapter 2 CBSE Class 12 Chemistry
Solutions – Chapter 2 CBSE Class 12 Chemistry Case-based Questions Read the given passages and answer the questions that follow: A solution which obeys Raoult’s law strictly is called an ideal solution, while a solution which shows deviations from Raoult’s law is called a non-ideal solution or real solution. Suppose the molecules of the solvent …
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Case Study Question 1 on Solutions – Chapter 2 CBSE Class 12 Chemistry
Case Study Question 1 on Solutions – Chapter 2 CBSE Class 12 Chemistry Case-based Questions Read the given passages and answer the questions that follow: The spontaneous flow of the solvent through a semipermeable membrane from a pure solvent to a solution or from a dilute solution to a concentrated solution is called osmosis. The …
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Chemistry Class 12 NCERT CBSE New Syllabus 2022-23
Chemistry Class 12 NCERT CBSE New Syllabus 2022-23 CHEMISTRY (Code No. 043) (2022-2023) CLASS XII (2022-23) (THEORY) Time: 3 Hours M.M. – 70 Marks S.No. Title No. of Periods Marks 1 Solutions 15 7 2 Electrochemistry 18 9 3 Chemical Kinetics 15 7 4 d -and f -Block Elements 18 7 5 Coordination Compounds 18 …
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Case Study Question 2 on Chemical Kinetics – Chapter 4 CBSE Class 12 Chemistry
Read the given passage and answer the questions that follow. Question. Temperature has a marked effect on the rate of reaction. For most of the reactions,the rate of reaction becomes nearly double for every 10 degree rise in temperature. The effect of temperature is usually expressed in terms of temperature coefficient. The quantitative dependence of …
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Case Study Question 1 on Chemical Kinetics – Chapter 4 CBSE Class 12 Chemistry
Case Study Question 1 on Chemical Kinetics – Chapter 4 Read the given passages and answer the questions that follow. Question. The rate of a chemical reaction is expressed either in terms of decrease in the concentration of a reactant per unit time or increase in the concentration of a product per unit time. Rate …
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