The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Item-I Item-II (I) Benzene (P) HCl and SnCl 2 , H 3 O + (II) Benzonitrile (Q) H 2 , Pd - BaSO 4 , S and quinoline (III) Benzoyl Chloride (R) Co , HCl and AlCl 3

(I)-(R), (II)-(P) and (III)-(Q)

(I)-(Q), (II)-(R) and (III)-(P)

(I)-(P), (II)-(Q) and (III)-(R)

(I)-(R), (II)-(Q) and (III)-(P)

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When dihydroxy acetone reacts with $H I O_{4}$ , the product is/are

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Important Questions on Aldehydes and Ketones

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An alkene of molecular formula

C_{9} H_{18}

, on ozonolysis gives

2, 2 -

dimethylpropanal &

2 -

butanone, then the alkene is

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The major product obtained from the following reaction is :

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Identify compound (A) in the following reaction :

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The major product obtained in the reaction of isobutyl benzene with acetic anhydride in the presence of anhydrous

{AlCl}_{3}

is:

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In the following reaction

A

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The major product of the following reaction sequence is

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An alkene on ozonolysis gives methanal as one of the product. Its structure is

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Which of the following is Rosenmund reduction?

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List

- I

includes starting materials and reagents of selected chemical reactions. List

- II

gives structures of compounds that may be formed as intermediate products and/or final products from the reactions of List

- I

List-I	List-II
(I)	$(P)$
(II)	$(Q)$
(III)	$(R)$
(IV)	$(S)$
	$(T)$
	$(U)$

Which of the following options has the correct combination considering List

- I

and List

- II

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The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :

	Item-I		Item-II
(I)	Benzene	(P)	$HCl$ and ${SnCl}_{2}, H_{3} O +$
(II)	Benzonitrile	(Q)	$H_{2}, Pd - {BaSO}_{4}, S$ and quinoline
(III)	Benzoyl Chloride	(R)	$Co, HCl and {AlCl}_{3}$

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Which of the following is obtained by hydrogenation of benzoyl chloride in presence of

Pd

{BaSO}_{4}

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The major product obtained in the following reaction is

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Chemistry>Organic Chemistry>Aldehydes and Ketones>Preparation of Aldehydes and Ketones

The reaction of acetylene with

H_{2} O

, in the presence of a catalytic amount of

{HgSO}_{4}

and dilute

H_{2} {SO}_{4}

, gives the product

A

. Compound

A

, upon treatment with aqueous

NaOH

, forms

B

. What are

A

and

B

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Reductive ozonolysis of

{({CH}_{3})}_{2} C = C {({CH}_{3})}_{2}

followed by hydrolysis gives

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What are the products formed in the reaction given below:

$Ph - {CH}_{2} - CH = CH - {CH}_{3} \to_{^{Zn dust + H_{2} O}}^{1) O_{3}}$ ?

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In which of the following reactions, benzaldehyde is formed from benzoyl chloride and hydrogen in the presence of

Pd - {BaSO}_{4}

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What are $X$ and $Y$ , respectively, in the following reactions?

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Consider the following reactions:

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'A' is

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An alkene

' A'

on reaction with

O_{3}

and

Z n - H_{2} O

gives propanone and ethanal in equimolar ratio. Additional of

H C l

to alkene

' A'

gives

' B'

as the major product. The structure of product

' B'

is:

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The major product of the following reaction is:

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When dihydroxy acetone reacts with HIO4 , the product is/are

Important Questions on Aldehydes and Ketones

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When dihydroxy acetone reacts with $H I O_{4}$ , the product is/are