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Suggest a route for the preparation of nitrobenzene starting from acetylene?
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Match the following reactants in Column I with the corresponding reaction products in Column II.
| Column I | Column II |
| (i) \[\ce{Benzene + Cl2 ->[AlCl3]}\] | (a) Benzoic acid |
| (ii) \[\ce{Benzene + CH3Cl ->[AlCl3]}\] | (b) Methyl phenyl ketone |
| (iii) \[\ce{Benzene + CH3COCl ->[AlCl3]}\] | (c) Toluene |
| (iv) \[\ce{Toluene ->[KMnO4/NaOH]}\] | (d) Chlorobenzene |
| (e) Benzene hexachloride |
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Which atom is indicated by the following configuration?
[He] 2s1
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Which atom is indicated by the following configuration?
[Ne] 3s2 3p3
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Which atom is indicated by the following configuration?
[Ar] 4s2 3d1.
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An atomic orbital has n = 3. What are the possible values of l and ml?
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List the quantum numbers (ml and l) of electrons for 3d orbital.
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Which of the following orbitals are possible?
1p, 2s, 2p and 3f
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Indicate the number of unpaired electrons in a P.
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Indicate the number of unpaired electrons in Si.
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Indicate the number of unpaired electrons in Cr.
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Indicate the number of unpaired electrons in Fe.
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Indicate the number of unpaired electrons in Kr.
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Write the important conditions required for the linear combination of atomic orbitals to form molecular orbitals.
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Discuss the chemistry of Lassaigne’s test.
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Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?
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The concentration of hydrogen ion in a sample of soft drink is 3.8 × 10–3 M. what is its pH?
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The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it.
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It has been found that the pH of a 0.01M solution of an organic acid is 4.15. Calculate the concentration of the anion, the ionization constant of the acid and its pKa.
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Assuming complete dissociation, calculate the pH of the following solution:
0.003 M HCl
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