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1-bromo-3-chlorocyclobutane is treated with two equivalents of Na in the presence of dry ether. Which of the following will be formed?

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Important Questions on Hydrocarbons

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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Assertion (A): Sodium acetate on Kolbe's electrolysis gives ethane.

Reason (R): Methyl free radical is formed at cathode.

EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Hydrocarbon A reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to a gaseous hydrocarbon containing less than four carbon atoms, A is
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Which of the following reactions is used for producing symmetrical alkane with double carbon atoms?

MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
 In the reaction of 1 -bromo-3-chlorocyclobutane with two equivalents of sodium in ether, the major product is
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which of the following alkane cannot be made in good yield by Wurtz reaction?
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
How many grams of cyclohexanol is required to produce 20 g cyclohexane, if % yield is 54%?
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Reaction of sodium acetate with soda lime will produce which of the following?
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Among the following reactions, the reaction that "does not" give alkane product is
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which one of the following reactions gives the product with less number of carbon atoms than the starting material?
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
If a mixture of iodomethane and iodoethane is treated with sodium metal in presence of dry ether it forms
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
CH3Br+2Na+CH3Br→Dry etherCH3−CH3+2NaBr The reaction is
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
How many gram of sodium (atomic mass 23 u) is required to prepare one mole of ethane from methyl chloride by Wurtz reaction?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Write a short note on 'Wurtz reaction'.
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
By which of the following reactions, methane can't be prepared:
A= Wurtz reaction
B= Reduction of alkyl halides with zinc and dil. HCl
C= Kolbe's electrolysis
D= Catalytic hydrogenation of alkenes
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which of the following reactions produce(s) propane as a major product?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
A 100 mL solution of CH3CH2MgBr on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is____mg (nearest integer)
HARD
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
A sample of 4.5mg of an unknown monohydric alcohol, R-OH was added to methylmagnesium iodide. A gas is evolved and is collected and its volume measured to be 3.1 mL. The molecular weight of the unknown alcohol is g/mol.
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which of the statement is incorrect if electrolysis of CH3COONa(aq) is made using Pt electrodes ?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Alkyl halides react with dialkyl copper reagents to give
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The gas evolved on heating CH3MgBr in methanol is: