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Complete combustion of alkenes requires sufficient

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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Name the gas evolved in the following case:

Ethene undergoes hydrogenation reaction.

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Write a balanced chemical equation for the preparation of ethene from bromoethane.
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To convert the structural formula of ethanol into ethene, changes to be done with ethanol are, remove:
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A gas decolourises alkaline KMnO4 solution, but does not give precipitate with AgNO3. The gas is:
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An organic compound A on heating with concentrated H2SO4 gave product B and on warming with alkaline KMnO4 gave compound C. Compound A on heating with compound C in presence of concentrated H2SO4 formed compound D, which has fruity smell. Identify the compounds A, B, C and D.
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Name the following organic compound:

The first homologue whose general formula is CnH2n.

HARD
Ozonolysis of an organic compound A produces propanone and propionaldehyde in equimolar mixture. A is
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CH3CH2OH Conc.H2SO4 Products

The products formed in the above reaction is/are

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When 2-chlorobutane reacts with hot alcoholic KOH, the major product formed is
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The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement)
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The correct order for acid strength of compounds CHCH,CH3-CCH and CH2=CH2 is as follows:
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Write a balanced chemical equation the following reaction:

Chlorine gas is reacted with ethene.

MEDIUM
The correct order of heat of combustion for following alkadienes is:
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HARD
A compound A with molecular formula C10H13Cl, gives a white precipitate on adding silver nitrate solution. A on reacting with alcoholic KOH gives compound B as the main product. B on ozonolysis, gives C and D. C gives Cannizaro reaction, but not aldol condensation. D gives aldol condensation, but not Cannizaro reaction. A is