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Class 12th

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Class 12th Chemistry Electrochemistry

The equilibrium constant for the reaction Zn(s) + Cu²⁺ (aq.) ->Cu(s) + Zn²⁺ (aq.), E° = 1.10 V at 298 K is

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alok kumar singh

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Class 12th Chemistry

Emulsion is a collodial solution of

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alok kumar singh

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Emulsion is a colloidal solution of liquid in liquid.

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Class 12th Chemistry Electrochemistry

Which of the following aqueous solution will have the maximum specific conductance?

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alok kumar singh

Contributor-Level 10

More the number of ions in solution, more will be the specific conductance

is more than that of Ionic conductivity of H^? Na⁺

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Class 12th Chemistry Chemical Kinetics

For which order reaction, half-life is inversely proportional to the concentration of reactant?

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alok kumar singh

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Class 12th Chemistry

Most acidic among the following is

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alok kumar singh

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Kindly go through the solution

Acidic Nature :

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Class 12th Chemistry

Which of the following compounds is optically active?

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alok kumar singh

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is optically active as it does not contain any element of symmetry.

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Class 12th Chemistry

Benzotrichloride on reaction with aq. KOH followed by hydrolysis gives

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alok kumar singh

Contributor-Level 10

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Class 12th Chemistry Coordination Compounds

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

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alok kumar singh

Contributor-Level 10

Correct order of increasing field strength of ligands is : I^– < OH^–< NCS^–

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Class 12th Dual Nature of Radiation and Matter

de Broglie wavelength of proton = λ and that of an a particle is 2λ. The ratio of velocity of proton to that of a particle is:

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alok kumar singh

Contributor-Level 10

$? = \frac{h}{p}$

$? = \frac{h}{m v_{p}}$

and $2 ? = \frac{h}{4 m v_{?}}$

$\frac{1}{2} = \frac{4 v_{?}}{v_{p}}$

$\frac{v_{p}}{v_{?}} = 8$

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Class 12th Chemistry Coordination Compounds

The effective atomic number of Fe in K₄[Fe(CN)₆] is

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alok kumar singh

Contributor-Level 10

EAN = Atomic No. – Oxidation state + 2 * CN

= 26 – 2 + 2 * 6

=36

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