MEDIUM

Earn 100

$0.037 g$ of an alcohol, $R O H$ , was added to $C H_{3} M g I$ and the gas evolved measured $11.2 c m^{2}$ at $S T P$ . What is the molecular weight of $R O H$ ? On dehydration, $R O H$ gives an alkene which on ozonolysis gives acetone as one of the products. $R O H$ on oxidation easily gives an acid containing the same number of carbon atoms. Give structures of $R O H$ and the acid with proper reasoning.

Important Questions on Haloalkanes and Haloarenes

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

A sample of

4.5 mg

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

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Write a short note on 'Wurtz reaction'.

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Reaction of sodium acetate with soda lime will produce which of the following?

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

100 mL

solution of

{CH}_{3} {CH}_{2} MgBr

on treatment with methanol produces

2.24 mL

of a gas at STP. The weight of gas produced is____mg (nearest integer)

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

How many gram of sodium (atomic mass 23 u) is required to prepare one mole of ethane from methyl chloride by Wurtz reaction?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

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)

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

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

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

If a mixture of iodomethane and iodoethane is treated with sodium metal in presence of dry ether it forms

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Which of the following alkane cannot be made in good yield by Wurtz reaction?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Which one of the following reactions gives the product with less number of carbon atoms than the starting material?

EASY

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

The gas evolved on heating

C H_{3} M g B r

in methanol is:

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Which of the following reactions produce(s) propane as a major product?

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

The aldehydes which will not form Grignard product with one equivalent of Grignard reagents are
$(A)$ Question Image

$(B)$

$(C)$

$(D)$

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

What is the major product of the following reaction sequence ?

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Question Image

The product formed in the above reaction is

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Which of the following synthesis reaction give 3-methyl-1-hexanol ?

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

The reaction of 1 mole each of

p

-hydroxyacetophenone and methyl magnesium iodide will give

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Which one of the following will produce a primary alcohol by reacting with

{CH}_{3} MgI

HARD

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Predict the major product of the reaction

Question Image

MEDIUM

Chemistry>Organic Chemistry>Haloalkanes and Haloarenes>Applications of Grignard Reagent

Phenyl magnesium bromide reacts with methanol to give

Important Questions on Haloalkanes and Haloarenes

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