Chemistry - Organic Chemistry Based on Functional Group II
Exam Duration: 45 Mins Total Questions : 30
When benzaldehyde reacts with alkali which one of the following may be obtained?
- (a)
benzene
- (b)
naphthalene
- (c)
benzyl alcohol and sodium benzoate
- (d)
phenol
Acetaldehyde when treated with caustic soda as a catalyst forms
- (a)
sodium acetate
- (b)
resin
- (c)
aldol
- (d)
acetone
Schiff's reagent gives pink colour with
- (a)
acetone
- (b)
acetic acid
- (c)
ethyl acetate
- (d)
acetaldehyde
Which one of the following statements is incorrect in case of acetaldehyde and acetone?
- (a)
Both react with hydroxylamine to form oximes
- (b)
Both react with sodium bisulphite to form addition product
- (c)
Both reduce ammoniacl silver nitrate solution
- (d)
Both react with hydrazine to form hydrazones
Ketone on reduction with Zn-Hg/HCl gives
- (a)
primary alcohol
- (b)
secondary alcohol
- (c)
tertiary alcohol
- (d)
hydrocarbon
When propyne is treated with dil H2SO4 in the presence of mercuric sulphate, the product formed would be
- (a)
propanal
- (b)
propanone
- (c)
propanol-2
- (d)
ethyl alcohol
Acetic acid on reacting with LiAlH4 gives
- (a)
ethyl alcohol
- (b)
ethane
- (c)
acetic acid
- (d)
acetaldehyde
When benzoic acid is sulphonated, we obtain
- (a)
a mixture of o and p-sulphobenzoic
- (b)
o-sulphobenzoic acid
- (c)
p-sulphobenzoic acid
- (d)
m-sulphobenzoic acid
\({ CH }_{ 3 }{ CH }_{ 2 }{ COOH }\overset {{ Cl }_{ 2 } }{ \underset { red\ P }{ \longrightarrow } A } \overset { alc.KOH }{ \longrightarrow } { B }\) What is B?
- (a)
CH3CH2COCL
- (b)
CH3CH2CHO
- (c)
CH2=CHCOOH
- (d)
ClCH2CH2COOH
Carbon monoxide gas was passed through strong sodium hydroxide solution under high pressure at 473 k.The product formed on acidification:
- (a)
formic acid
- (b)
acetic acid
- (c)
methanol
- (d)
carbonic acid
A hydrocarbon B adds one mole of H2 in presence of Pt to form an alkane. When B is oxidised vigorously with KMnO4 solution a carboxylic acid is obtained. Compound B can be
- (a)
\(CH_3CH_2CH=CHCH_2CH\)
- (b)
\(CH_3CH_2CH_2CH_2CH_2=CH_2\)
- (c)
\(CH_3CH=CHCH_2CH_2CH_2\)
- (d)
\({ CH }_{ 3 }-{ CH- }CH-{ CH }-{ { CH }_{ 3 } }\\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad |\\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad { CH }_{ 3 }\)
Cannizzaro's reaction is given only with
- (a)
Ketones
- (b)
carboxylic acid
- (c)
aldehydes having \(\alpha \)-hydrogen
- (d)
aldehydes having no \(\alpha \)-hydrogen
Trioxane has the formula
\(\quad\quad\quad O\\ \quad \quad \diagup \quad \quad \diagdown \\ C{ H }_{ 2 }\quad \quad \quad C{ H }_{ 2 }\\ \quad |\quad \quad \quad \quad \quad |\\ O\quad\quad \quad \quad \quad O\\ \quad \diagdown \quad \quad \quad \diagup \\ \quad \quad C{ H }_{ 2 }\)
It is preapred for
- (a)
Vinyl alcohol
- (b)
dichloro methane
- (c)
methanol
- (d)
methanal
Which of the following compound is most reactive towards nucleophilic addition reactions?
- (a)
- (b)
- (c)
- (d)
The Clemmensen reduction of ketones is carried out in the presence of
- (a)
Zn-Hg with HCl
- (b)
LiAlH4
- (c)
H2 and Pt as a catalyst
- (d)
glycol with KOH
The compound, benzaldehyde and acetone are distinguished by
- (a)
Fehling's solution
- (b)
2, 4-DNP
- (c)
Tollen's reagent
- (d)
sodium hydroxide solution
The acids, HCOOH and CH3COOH are distinguished by
- (a)
reaction with Na metal
- (b)
reaction with NaOH
- (c)
reaction with Tollen's reagent
- (d)
reaction with Schiff's reagent
The most acidic H-atom in the following ester is
\({ ^{ 1 }{ CH }_{ 3 } }^{ 2 }{ CH }_{ 2 }{ - }\overset { \overset { O }{ || } }{ C } { - }^{ 3 }{ CH }_{ 2 }{ - }\overset { \overset { O }{ || } }{ C } { - }{ O }{ - }{ ^{ 4 }{ CH }_{ 2 } }^{ 5 }{ CH }_{ 3 }\)
- (a)
1
- (b)
2
- (c)
3
- (d)
4
In Rosenmund reduction,
\(RCOCl + H_2 \overset {Pd/BaSO_4 }{ \rightarrow } RCHO + HCl\)
BaSO4 here,
- (a)
promotes catalytic activity of Pd
- (b)
removes HCl formed in the reaction
- (c)
deactivates palladium
- (d)
activates palladium
Identify X in the following reaction, \(CH_3COOH\overset {Br_2/P }{ \rightarrow } Y\xrightarrow [ (ii)H_3O^+ ]{ KCN} X\)
- (a)
glycolic acid
- (b)
succinic acid
- (c)
malonic acid
- (d)
\(\alpha\)-hydroxy propionic acid
In the reaction,
\(CH_3COOH \xrightarrow [ ]{ LiAIH_4 } A\xrightarrow [ ]{PCl_5 } B\xrightarrow [ ]{ AIc.KOH} C\)
The product C is
- (a)
acetaldehyde
- (b)
acetylene
- (c)
ethylene
- (d)
acetyl chloride
1654060945.png)
1654060942.png)
1653987551.png)
1653987086.png)
1582095229.jpg)
