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Aldehydes and ketones will not form crystalline derivatives with                            
1. sodium bisulphite
2. phenyl hydrazine
3. semicarbazide hydrochloride
4. dihydrogen sodium phosphate

Acetone reacts with iodine $\left({\mathrm{I}}_2\right)$ to form iodoform in the presence of
1. Ca${\mathrm{CO}}_3$         
2. NaOH         
3. KH           
4. Mg${\mathrm{CO}}_3$

Two isomeric ketones 3-Pentanones and 2-pentanone can be distinguished by
1. I₂/NaOH only               
2. NaHSO₃ only
3. NaCN/HCl                     
4. both of (a) and (b)   

Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore, X and Y are respectively                                                              
1. Sodalime and copper
2. Zn dust and NaOH
3. Cu and sodalime
4. Sodalime and zinc dust

The product formed in aldol condensation is                                                                 
1. a beta-hydroxy acid
2. a beta-hydroxy aldehyde or a beta-hydroxy ketone
3. an alpha-hydroxy aldehyde or ketone
4. an alpha, beta unsaturated ester

Which one of the following can be oxidised to the corresponding carbonyl compound?          
1. 2-hydroxy propane
2. Ortho-nitro phenol
3. Phenol
4. 2-methyl-2-hydroxy propane

Consider the following reaction,
Phenol$\stackrel{\mathrm{Zn}-\mathrm{dust}}{\to }$X$\underset{\mathrm{Anhy}.{\mathrm{AlCl}}_3}{\overset{{\mathrm{CH}}_3\mathrm{Cl}}{\to }}$Y$\stackrel{\mathrm{Alk}.{\mathrm{KMnO}}_4}{\to }$Z 
The product Z is                            
1. toluene
2. benzaldehyde
3. benzoic acid
4. benzene

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called    
1. Clemmenson reduction
2. Cope reduction
3. Dow reduction
4. Wolff-Kishner reduction

The -OH group of an alcohol or the -COOH group of a carboxylic acid can be replaced by -Cl using     
1. phosphorus pentachloride
2. hypochlorous acid
3. chlorine
4. hydrochloric acid

Acetone reacts with iodine (I₂) to form iodoform in the presence of      
1. CaCO₃   
2. NaOH     
3. KOH     
4. MgCO₃

A and B in the following reactions are  

1. A=RR'CH₂CN,              B=NaOH
2. A=RR'C${<}_{\mathrm{COOH}}^{\mathrm{OH}}$ ,          B=CH₃
3. A=RR'C${<}_{\mathrm{COOH}}^{\mathrm{CN}}$ ,          B=CH₃
4. A=RR"C${<}_{\mathrm{OH}}^{\mathrm{CN}}$,              B=LiAlH₄

Benzaldehyde and acetaldehyde can be distinguished by:
1. iodoform test
2. 2,4 - DNP test
3. ${\mathrm{NH}}_3$ reaction
4. Wolff-Kishner's reduction

Acetaldehyde normally reacts with                
1. only electrophiles
2. only nucleophiles
3. only free radicals
4. both electrophiles and nucleophiles

Nucleophilic addition reaction will be most favoured in                   [2006]
1. $$
$\mathrm{O}$
$\parallel$
${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2\mathrm{C}-{\mathrm{CH}}_3$
2. $({\mathrm{CH}}_3{)}_2\mathrm{C}=\mathrm{O}$
3. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}$
4. ${\mathrm{CH}}_3\mathrm{CHO}$

The enolic form of acetone contains:
1. 9 $\mathrm{\sigma }$-bonds, 1$\mathrm{\pi }$-bond and 2 lone pairs
2. 8 $\mathrm{\sigma }$-bonds, 2$\mathrm{\pi }$-bonds and 2 lone pairs
3. 10 $\mathrm{\sigma }$-bonds, 1$\mathrm{\pi }$-bond and 1 lone pair
4. 9 $\mathrm{\sigma }$-bonds, 2$\mathrm{\pi }$-bonds and 1 lone pair
 
 

In this reaction,
CH₃CHO + HCN $\to$CH₃CH(OH)CN $\stackrel{\mathrm{H}.\mathrm{OH}}{\to }$CH₃CH(OH)COOH
an asymmetric compound is generated. The acid obtained would be            
1. 50% D + 50% L-isomer
2. 20% D + 80% L-isomer
3. D-isomer
4. L-isomer

Cyanohydrin of which compound gives lactic acid on hydrolysis?
1. Acetone                                 
2. Acetaldehyde
3. Propanal                                 
4. HCHO

Formaldehyde can be distinguished from acetaldehyde by:
1. Fehling's solution
2. Schiff's reagent
3. Ammonia
4. Ammoniacal ${\mathrm{AgNO}}_3$

The reaction

is fastest when X is
1. Cl
2. NH₂
3. OC₂H₅
4. OCOR

In a set of reaction propionic acid yielded a compound D.
CH3CH2COOH$\stackrel{{\mathrm{SOCl}}_2}{\to }$ B$\underset{∆}{\overset{N{H}_3}{\to }}$ C$\underset{{\mathrm{Br}}_2}{\overset{\mathrm{KOH}}{\to }}$
$$
The structure of D would be
1. CH₃CH₂NHCH₃
2. CH₃CH₂NH₂
3. CH₃CH₂CH₂NH₂
4. CH₃CH₂CONH₂

$\stackrel{\mathrm{Zn}-\mathrm{Hg}/\mathrm{HCl}}{\to }$Product, Product is
1.    2.
 
3.    4.
 

Which of the following  gives aldol condensation
(1)

(2)

(3)

(4)

 

R-Cl$\underset{\mathrm{Dry} \mathrm{Ether}}{\overset{Mg}{\to }}$ A $\underset{\mathrm{ii}·{\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\mathrm{i}·{\mathrm{CO}}_2}{\to }}$
R-Cl is
(1)

(2)

(3)

(4)

$\stackrel{\mathrm{HCN}}{\to }$A $\underset{\left(excess\right)}{\overset{KCN}{\to }}$B;B is
(1)

(2)

(3)

(4)

 

Consider the following reaction,
$\underset{∆}{\overset{{\mathrm{P}}_2{\mathrm{O}}_5}{\to }}$Product
Product is?

1.		2.
3.		4.

Identify the product (c) in the series
CH₃CN$\stackrel{\mathrm{Na}/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\to }$A$\stackrel{\mathrm{HNO}2}{\to }$B$\stackrel{{\mathrm{KMnO}}_4,{\mathrm{H}}^{+}}{\to }$C
1. CH₃COOH
2. CH₃CH₂NHOH
3. CH₃CONH₂
4. CH₃CHO

Product (B) of the reaction is :
1. 
2. 
3. 
4. 

Product (A) of the reaction is :

1. 
2. 
3. 
4. 

(A) and (B) is differentiated by :
1. NaH
2. 2-4 DNP
3. Tollen's reagent 
4. ${\mathrm{NaHSO}}_3$

Which $\mathrm{\beta }$-keto acid shown will not undergo decarboxylation ?
(1)              
(2) 
(3)    $$\begin{gathered} O \\ \left|\right| \\ Ph-C-C{H}_2-C{O}_{2}H \end{gathered}$$  
(4) $$\begin{gathered} O \\ \left|\right| \\ C{H}_2-C-C{H}_2-C{O}_{2}H \end{gathered}$$

 $\underset{∆}{\overset{{\mathrm{H}}_3\mathrm{O}}{\to }}$ (A) , Product (A) obtained is :
(1) 
(2) 
(3) 
(4) 

 +$\mathrm{R}-{\mathrm{CH}}_2-{\mathrm{NH}}_2$$\underset{\mathrm{THF}}{\overset{{\mathrm{K}}_2{\mathrm{CO}}_3}{\to }}$ (A) 
                                                      (71%)
In above reaction identify major product (A) of the reaction:
(a)     (b) 
(c)        (d) 

A key step in the hydrolysis of acetamide in aqueous acid proceeds by nucleophilic addition of :
(1) ${\mathrm{H}}_3{\mathrm{O}}^{+}$ to    $O$
$\left|\right|$
$C{H}_{3}C N{H}_2$                       
(2)  ${\mathrm{H}}_2\mathrm{O}$ to    $+OH$
$\left|\right|$
$C{H}_{3}C N{H}_2$
(3) ${\mathrm{H}}_3{\mathrm{O}}^{+}$ to  $+OH$
$\left|\right|$
$C{H}_{3}CN{H}_2$                        
(4) ${\mathrm{HO}}^{-}$ to $+OH$
$\left|\right|$
$C{H}_{3}CN{H}_2$

Which is the major product of the following reaction?

1. 
2. 
3. 
4. 

Compound having molecular formula ${\mathrm{C}}_3{\mathrm{H}}_6\mathrm{O}$ may be:
(1) cyclic ether
(2) carbonyl compound
(3) unsaturatd ether or unsaturatd alcohol
(4) all of the above

Which of the following would undergo aldol condensation?
(1) $CC{l}_3$CHO               
(2) $C{H}_3$
$|$
$C{H}_3—C—CHO$
$|$
$C{H}_3$
(3) $C{H}_{3}C{H}_2$CHO          
(4) HCHO

Both acetaldehyde and ketone react with:
(1) ammoniacal AgNO₃
(2) rochelle salt
(3) 2,4-dinitro phenylhydrazine
(4) all of the above
 

Which structural unit is possessed by aldehyde and not ketone?
(1) $\mathrm{\alpha }$-H-atom
(2) H-atom and carbonyl group
(3) OH and carbonyl group
(4) None of the above

Ketones are less reactive than aldehydes because:
(1) C=O group is more polar in ketones
(2) of electromeric effect
(3) of steric hindrance to the attacking reagent 
(4) none of the above

The important step in Cannizzaro's reaction is the intermolecular shift of:
(1) proton
(2) H-atom
(3) hydride ion
(4) hydronium ion

Pinacole is:
1. 2,3-dimethyl-2,3-butandiol
2. 3,3-dimethyl-2-propanone
3. 3-methylbutan-2-ol
4. None of the above

Benedict's solution provides:
(1) Ag⁺
(2) Cu²⁺
(3) Ba²⁺
(4) Li⁺

Acetaldehyde undergoes self condensation in presence of aluminium ethoxide to give ethyl acetate. This reaction is called:
(1) Perkin reaction
(2) Tischenko's reaction
(3) Cannizzaro's reaction
(4) Aldol condensation

Semicarbazide is:
(1) NH₂CONH₂
(2) NH₂-NH₂
(3) NH₂CONHNH₂
(4) None of these