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Tamil Nadu Board of Secondary EducationHSC Science कक्षा १२

HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions

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The correct difference between first and second order reactions is that

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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Explain the effect of catalyst on reaction rate with an example.

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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The rate law for a reaction of A, B and C has been found to be rate = `"k" ["A"]^2["B"] ["L"]^(3/2)`. How would the rate of reaction change when

  1. Concentration of [L] is quadrupled
  2. Concentration of both [A] and [B] are doubled
  3. Concentration of [A] is halved
  4. Concentration of [A] is reduced to `(1/3)` and concentration of [L] is quadrupled.
[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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The rate of formation of a dimer in a second order reaction is 7.5 × 10−3 mol L−1s−1 at 0.05 mol L−1 monomer concentration. Calculate the rate constant.

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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For a reaction \[\ce{x + y + z -> products}\] the rate law is given by rate = `"k" ["x"]^(3/2) ["y"]^(1/2)` what is the overall order of the reaction and what is the order of the reaction with respect to z.

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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How do concentrations of the reactant influence the rate of reaction?

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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How do nature of the reactant influence rate of reaction?

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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Benzene diazonium chloride in aqueous solution decomposes according to the equation \[\ce{C6H5N2Cl -> C6H5Cl + N2}\]. Starting with an initial concentration of 10 g L−1, the volume of N2 gas obtained at 50°C at different intervals of time was found to be as under:

t (min): 6 12 18 24 30
Vol. of N2
(ml)
19.3 32.6 41.3 46.5 50.4 58.3

Show that the above reaction follows the first order kinetics. What is the value of the rate constant?

[7] Chemical Kinetics
Chapter: [7] Chemical Kinetics
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How will you prepare Acetic anhydride from acetic acid?

[12] Carbonyl Compounds and Carboxylic Acids
Chapter: [12] Carbonyl Compounds and Carboxylic Acids
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How will you prepare Acetic anhydride from acetic acid?

[12] Carbonyl Compounds and Carboxylic Acids
Chapter: [12] Carbonyl Compounds and Carboxylic Acids
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How will you prepare Acetic anhydride from acetic acid?

[12] Carbonyl Compounds and Carboxylic Acids
Chapter: [12] Carbonyl Compounds and Carboxylic Acids
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How will you prepare Acetic anhydride from acetic acid?

[12] Carbonyl Compounds and Carboxylic Acids
Chapter: [12] Carbonyl Compounds and Carboxylic Acids
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________ refers to any type of application that involves more than one type of media such as text, graphics video animation and sound.

[1] Multimedia and Desktop Publishing
Chapter: [1] Multimedia and Desktop Publishing
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You need hardware, software and ________ to make multimedia.

[1] Multimedia and Desktop Publishing
Chapter: [1] Multimedia and Desktop Publishing
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DTP stands for _____.

[2] An Introduction to Adobe Pagemaker
Chapter: [2] An Introduction to Adobe Pagemaker
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________ is a DTP software.

[2] An Introduction to Adobe Pagemaker
Chapter: [2] An Introduction to Adobe Pagemaker
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Choose the correct statement.

[2] An Introduction to Adobe Pagemaker
Chapter: [2] An Introduction to Adobe Pagemaker
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What is desktop publishing?

[2] An Introduction to Adobe Pagemaker
Chapter: [2] An Introduction to Adobe Pagemaker
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Give some examples of DTP software.

[2] An Introduction to Adobe Pagemaker
Chapter: [2] An Introduction to Adobe Pagemaker
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Which language is used to request information from a Database?

[3] Introduction to Database Management System
Chapter: [3] Introduction to Database Management System
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