NCERT Exemplar Problems Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers Multiple Choice Questions Single Correct Answer Type Question 1. Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields. (a) o-Cresol (b) w-Cresol (c) 2, 4-Dihydroxytoluene (d) Benzyl alcohol Solution: (d) Monochlorination of toluene in sunlight gives benzyl chloride. On hydrolysis…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Multiple Choice Questions Single Correct Answer Type Question 1. The order of reactivity of following alcohols with halogen acids is Solution: (b) The reactivity order of alcohols towards halogen acids is 3° > 2° > 1°, since the stability of carbocations is of the…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 9 Coordination Compounds Multiple Choice Questions Single Correct Answer Type Question 1. Which of the following complex formed by Cu2+ ions is most stable? Solution: (b) The greater the value of log K, the greater will be stability of complex compound formed. For reaction, For this reaction, log…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 8 The d- and f-Block Elements Multiple Choice Questions Single Correct Answer Type Question 1. Electronic configuration of a transition element X in +3 oxidation state is [Ar] 3d5. What is its atomic number? (a) 25 (b) 26 (c) 27 (d) 24 Solution: Question 2. The electronic configuration…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 7 The p-Block Elements Multiple Choice Questions Single Correct Answer Type Question 1. On addition of cone. H2SO4 to a chloride salt, colourless fumes are evolved but in case of iodide salt, violet fumes come out. This is because Solution: (c) HI formed during reaction is oxidized to…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements Multiple Choice Questions Single Correct Answer Type Question 1. In the extraction of chlorine by electrolysis of brine, Solution: (a) Extraction of chlorine from brine is based on the oxidation reaction of Question 2. When copper ore is mixed…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 5 Surface Chemistry Multiple Choice Questions Single Correct Answer Type Question 1. Which of the following process does not occur at the interface of phases? (a) Crystallisation (b) Heterogeneous catalysis (c) Homogeneous catalysis ’ (d) Corrosion – Solution: (c) There is no homogeneous catalysis. Question 2. At the…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 4 Chemical Kinetics Multiple Choice Questions Single Correct Answer Type Question 1. The role of a catalyst is to change (a) Gibbs energy of reaction (b) enthapy of reaction (c) activation energy of reaction (d) equilibrium constant Solution: (c) A catalyst lowers the activation energy of a reaction.…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 3 Electrochemistry Multiple Choice Questions Single Correct Answer Type Question 1. Which cell will measure standard electrode potential of copper electrode? Solution: (c) When copper electrode is connected to standard hydrogen electrode, it acts as cathode and its standard electrode potential can be measured. To calculate the standard…
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NCERT Exemplar Problems Class 12 Chemistry Chapter 2 Solution Multiple Choice Questions Single Correct Answer Type Question 1. Which of the following unit is useful in relating concentration of solution with its vapour pressure? (a) Mole fraction (b) Parts per million (c) Mass percentage (d) Molality Solution: (a) Mole fraction is useful in’relating vapour pressure…
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