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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NCERT Exemplar Problems Class 12 Chemistry Chapter 1 Solid State Multiple Choice Questions Single Correct Answer Type Question 1. Which of the following condition favours the existence of a substance in the solid state? (a) High temperature (b) Low temperature (c) High thermal energy (d) Weak cohesive forces Solution: (b) At low temperature substance exists…
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