Draw all the resonating structures of the following compound:

Anthracene

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

MEDIUM

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 66

Draw all the resonating structures of the following compound:

Phenanthrene

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 67

When Lassainge extract of Methylamine react with ${\mathrm{FeSO}}_4/$ dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ what happens?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 68

Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens.

HARD

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 69

What will happen during Lassaigne's test for nitrogen if the compound also contains sulphur?

EASY

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 70

On complete combustion, $0.246 \mathrm{g}$ an organic compound gave $0.198 \mathrm{g}$ carbon dioxide and $0.1014 \mathrm{g}$ water. Determine the percentage composition of carbon and hydrogen in the compound.

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 71

In Dumas' method for estimation of nitrogen, $0.3 \mathrm{g}$ an organic compound gave $50 \mathrm{mL}$ nitrogen collected at $300 \mathrm{K}$ temperature and $715 \mathrm{mm}$ pressure. Calculate the percentage composition of nitrogen in the compound. (Aqueous tension at $300 \mathrm{K}=15 \mathrm{mm}$).

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Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 72

During estimation of nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.5 \mathrm{g}$ of the compound in Kjeldahl's estimation of nitrogen neutralized $10 \mathrm{mL} \mathrm{of} 1\mathrm{M} {\mathrm{H}}_2{\mathrm{SO}}_4$. Find the percentage of nitrogen in the compound.

EASY

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 23 - Organic Chemistry- Some Basic Principles and Techniques>Exercise-1>Q 73

In the Carius method of estimation of halogen, $0.15 \mathrm{g}$ an organic compound gave $0.12 \mathrm{g}$ off $\mathrm{AgBr}$. Find out the percentage of bromine in the compound.