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Standard XII

Chemistry

Reductions Involving Aldehydes or Ketones

A compound 'A...

Question

A compound $‘ A^{'}$ with the empirical formula $C_{3} H_{6} O_{2}$ has a fruity smell. It reacts with $DIBAL - H / H_{2} O$ at ultra low temperatures. After work-up, we get $‘ X^{'}$ and $‘ Y^{'}$ . $‘ X^{'}$ on treating with dilute $N a O H$ forms $‘ Z^{'}$ . $^{'} Z^{'}$ doesn’t have a hydroxyl group and it reacts with ${(C H_{3})}_{2} C u L i$ to give $M$ . $‘ Z^{'}$ also reacts with $C H_{3} M g B r$ to give $‘ N^{'}$ . Based on this passage, answer the following questions:
Which of the following is/are true?

‘ M^{'}

has a carbon-carbon double bond

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‘ M^{'}

is a carbonyl compound

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‘ N^{'}

has a carbon carbon double bond

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‘ N^{'}

is an alochol

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Solution

The correct options are
B $‘ M^{'}$ is a carbonyl compound
C $‘ N^{'}$ has a carbon carbon double bond
D $‘ N^{'}$ is an alochol

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Similar questions

Q. A compound

‘ A^{'}

with the empirical formula

C_{3} H_{6} O_{2}

has a fruity smell. It reacts with

DIBAL - H / H_{2} O

at ultra low temperatures. After work-up, we get

‘ X^{'}

and

‘ Y^{'}

‘ X^{'}

on treating with dilute

N a O H

forms

‘ Z^{'}

^{'} Z^{'}

doesn’t have a hydroxyl group and it reacts with

{(C H_{3})}_{2} C u L i

to give

M

‘ Z^{'}

also reacts with

C H_{3} M g B r

to give

‘ N^{'}

. Based on this passage, answer the following questions:
Which of the following is/are true?

Q. A compound

‘ A^{'}

with the empirical formula

C_{3} H_{6} O_{2}

has a fruity smell. It reacts with

DIBAL - H / H_{2} O

at ultra low temperatures. After work-up, we get

‘ X^{'}

and

‘ Y^{'}

‘ X^{'}

on treating with dilute

N a O H

forms

‘ Z^{'}

Z

doesn’t have a hydroxyl group and it reacts with

{(C H_{3})}_{2} C u L i

to give

M

‘ Z^{'}

also reacts with

C H_{3} M g B r

to give

‘ N^{'}

. Based on this passage, answer the following questions:
Which of the following reducing agents could be used to convert

A

into

X

A four carbon atoms containing neutral organic compound X reacts with metal to evolve a gas which burns with 'pop' sound. Another four carbon atoms containing carbon compound reacts with sodium hydrogen carbonate to evolve a gas which turns lime water milky. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed.

(a) What is compound X? Also write its formula.

(b) What is compound Y? Also write its formula.

(d) What type of smell is given by compound Z?

(e) What is the general name of compounds like Z?

(f) What is the general name of the reaction which takes place between X and Y to form Z?

Q. A compound X decolourises

B r_{2}

water and reacts slowly with conc.

H_{2} S O_{4}

to give an addition product. X reacts with HBr to form Y.Y reacts with NaOH to form, Z, On oxidation Z gives hexan-3-one. X,Y and Z in the reactions are :

Q. In a series of reaction during carbon fixation, 'A', a six carbon compound reacts with a three carbon compound to gives rise 'B', a four-carbon compound and 'C', five carbon compound. 'B' reacts with a three carbon compound to form D, a seven carbon compound. 'D' reacts with triose to form two molecules of 'E', five-carbon compounds. Identify the reactant with 'B' and enzyme involved in the formation of 'D' respectively.

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The correct options are B ‘M′ is a carbonyl compound C ‘N′ has a carbon carbon double bond D ‘N′ is an alochol

The correct options are
B $‘ M^{'}$ is a carbonyl compound
C $‘ N^{'}$ has a carbon carbon double bond
D $‘ N^{'}$ is an alochol