11242 + Mcqs in Chemistry Page 35 McqOptions

1701.	Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as [MNR 1987]
A.	Wurtz's reaction
B.	Cannizzaro reaction
C.	Friedel-Craft's reaction
D.	Claisen reaction
Answer» C. Friedel-Craft's reaction

Discussion

1702.	\[3C{{H}_{3}}COC{{H}_{3}}\xrightarrow{HCl}{{(C{{H}_{3}})}_{2}}C=CH-CO-CH=C{{(C{{H}_{3}})}_{2}}\] This polymer is obtained when acetone is saturated with hydrogen chloride gas, B can be [CBSE PMT 1989]
A.	Phorone
B.	Formose
C.	Diacetone alcohol
D.	Mesityl oxide
Answer» B. Formose

Discussion

1703.	Aldol condensation of acetaldehyde involves the formation of which of the following intermediate [Pb. CET 1986]
A.	Acetate ion
B.	A carbanion
C.	A carbonium ion
D.	A free radical
Answer» C. A carbonium ion

Discussion

1704.	Treatment of propionaldehyde with dilute NaOH solution gives [MNR 1992]
A.	\[C{{H}_{3}}C{{H}_{2}}COOC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\]
B.	\[C{{H}_{3}}C{{H}_{2}}CHOHCH(C{{H}_{3}})CHO\]
C.	\[C{{H}_{3}}C{{H}_{2}}CHOHC{{H}_{2}}C{{H}_{2}}CHO\]
D.	\[C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{2}}CHO\]
Answer» D. \[C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{2}}CHO\]

Discussion

1705.	Acetaldehyde reacts with \[{{C}_{2}}{{H}_{5}}MgCl\] the final product is [Pb. CET 1985]
A.	An aldehyde
B.	A ketone
C.	A primary alcohol
D.	A secondary alcohol
Answer» E.

Discussion

1706.	Which of the following reagent reacts differently with \[HCHO,\,C{{H}_{3}}CHO\] and \[C{{H}_{3}}COC{{H}_{3}}\] [MP PET 1999]
A.	HCN
B.	\[N{{H}_{2}}N{{H}_{2}}\]
C.	\[N{{H}_{2}}OH\]
D.	\[N{{H}_{3}}\]
Answer» E.

Discussion

1707.	If formaldehyde and KOH are heated, then we get [MP PET 1999; KCET 2000]
A.	Acetylene
B.	Methane
C.	Methyl alcohol
D.	Ethyl formate
Answer» D. Ethyl formate

Discussion

1708.	The light yellow compound produced when acetone reacts with iodine and alkali, is [MP PMT 1992; EAMCET 1993]
A.	\[C{{H}_{3}}.CO.C{{H}_{2}}I\]
B.	\[C{{H}_{3}}I\]
C.	\[CH{{I}_{3}}\]
D.	None of these
Answer» D. None of these

Discussion

1709.	A and B in the following reactions are \[R-\underset{\underset{O}{\mathop{\|\|}}\,}{\mathop{C}}\,-{R}'\underset{KCN}{\mathop{\xrightarrow{HCN}}}\,A\xrightarrow{B}\begin{matrix} R \\ R \\ \end{matrix}\,>C
A.	\[A=RR'C<\begin{matrix} CN \\ OH \\ \end{matrix},B-LiAl{{H}_{4}}\]
B.	\[A=RR'C<\begin{array}{*{35}{l}} OH \\ COOH \\ \end{array},\,\,B-N{{H}_{3}}\]
C.	\[A=RR'C<\begin{matrix} CN \\ OH \\ \end{matrix}\ ,B={{H}_{3}}{{O}^{\oplus }}\]
D.	\[A=RR'C{{H}_{2}}CN,B=NaOH\]
Answer» B. \[A=RR'C<\begin{array}{*{35}{l}} OH \\ COOH \\ \end{array},\,\,B-N{{H}_{3}}\]

Discussion

1710.	Haloform test is given by the following substance [EAMCET 1988]
A.	HCHO
B.	\[{{(C{{H}_{3}})}_{2}}CO\]
C.	\[C{{H}_{3}}OC{{H}_{3}}\]
D.	\[C{{H}_{3}}C{{H}_{2}}Cl\]
Answer» C. \[C{{H}_{3}}OC{{H}_{3}}\]

Discussion

1711.	Which of the following does not give iodoform test [AIIMS 1992; MP PMT 1990, 96; CET Pune 1998 DPMT 1981; CPMT 1976]
A.	\[C{{H}_{3}}C{{H}_{2}}OH\]
B.	\[C{{H}_{3}}OH\]
C.	\[C{{H}_{3}}CHO\]
D.	\[PhCOC{{H}_{3}}\]
Answer» C. \[C{{H}_{3}}CHO\]

Discussion

1712.	Which of the following will not give the iodoform test [MNR 1994]
A.	Acetophenone
B.	Ethanal
C.	Benzophenone
D.	Ethanol
Answer» D. Ethanol

Discussion

1713.	Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as [KCET 2005]
A.	Perkin's reaction
B.	Cannizzaro's reaction
C.	Sandmeyer's reaction
D.	Claisen condensation
Answer» C. Sandmeyer's reaction

Discussion

1714.	To distinguish between formaldehyde and acetaldehyde, we require [Orissa PMT 1987]
A.	Tollen's reagent
B.	Fehling's solution
C.	Schiff's reagent
D.	Caustic soda solution
Answer» E.

Discussion

1715.	The following reagent converts \[{{C}_{6}}{{H}_{5}}COCHO\] to \[{{C}_{6}}{{H}_{5}}CHOHCOONa\] [Roorkee Qualifying 1998]
A.	Aq. NaOH
B.	Acidic \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]
C.	\[N{{a}_{2}}Cr{{O}_{4}}/{{H}_{2}}S{{O}_{4}}\]
D.	\[NaN{{O}_{2}}/HCl\]
Answer» B. Acidic \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]

Discussion

1716.	Acetaldehyde cannot show [AIIMS 1997]
A.	Iodoform test
B.	Lucas test
C.	Benedict's test
D.	Tollen's test
Answer» C. Benedict's test

Discussion

1717.	Which of the following oxidation reactions can be carried out with chromic acid in aqueous acetone at \[5-{{10}^{o}}C\] [Roorkee Qualifying 1998]
A.	\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C\equiv C-\underset{\underset{OH}{\mathop{\|}}\,}{\mathop{CH}}\,-C{{H}_{3}}\to \]\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C\equiv \overset{\begin{smallmatrix} O \\ \|\,\,\|\end{smallmatrix}}{\mathop{C}}\,-C-C{{H}_{3}}\]
B.	\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-C{{H}_{2}}OH\to \]\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-CHO\]
C.	\[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\to {{C}_{6}}{{H}_{5}}COOH\]
D.	\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}C{{H}_{2}}OH\to C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CHO\]
Answer» B. \[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-C{{H}_{2}}OH\to \]\[C{{H}_{3}}{{(C{{H}_{2}})}_{3}}CH=CH-CHO\]

Discussion

1718.	When m-chlorobenzaldehyde is treated with 50% KOH solution, the product (s) obtained is (are) [CBSE PMT 2003]
A.
B.
C.
D.
Answer» D.

Discussion

1719.	\[{{C}_{2}}{{H}_{5}}CHO\] and \[{{(C{{H}_{3}})}_{2}}CO\] can be distinguished by testing with [EAMCET 1998; CPMT 1994, 97; MP PET 1995; MP PMT 1996; RPMT 1997, 99]
A.	Phenyl hydrazine
B.	Hydroxylamine
C.	Fehling solution
D.	Sodium bisulphite
Answer» D. Sodium bisulphite

Discussion

1720.	Which one does not give cannizzaro's reaction [Kerala CET 2005]
A.	Benzaldehyde
B.	2-methyl propanal
C.	p-methoxy benzaldehyde
D.	2,2 dimethyl propanal
E.	Formaldehyde
Answer» C. p-methoxy benzaldehyde

Discussion

1721.	\[C{{H}_{3}}-CHO+HCN\to A\]; Compound \[A\] on hydrolysis gives [Kerala CET 2005]
A.	\[C{{H}_{3}}-C{{H}_{2}}-COOH\]
B.	\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-N{{H}_{2}}\]
C.	\[C{{H}_{3}}-CO-COOH\]
D.	\[C{{H}_{3}}CO-CH=NOH\]
E.	\[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-COOH\]
Answer» F.

Discussion

1722.	A compound \[A\to {{C}_{5}}{{H}_{10}}C{{l}_{2}}\] on hydrolysis gives \[{{C}_{5}}{{H}_{10}}O\] which reacts with \[N{{H}_{2}}OH\], forms iodoform but does not give fehling test. \[A\] is [DPMT 2005]
A.	\[C{{H}_{3}}\underset{Cl}{\mathop{\underset{\|}{\mathop{\overset{Cl}{\mathop{\overset{\|}{\mathop{-C-}}\,}}\,}}\,}}\,C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]
B.	\[C{{H}_{3}}C{{H}_{2}}\underset{Cl}{\mathop{\underset{\|}{\mathop{\overset{Cl}{\mathop{\overset{\|}{\mathop{-C-}}\,}}\,}}\,}}\,C{{H}_{2}}C{{H}_{3}}\]
C.	\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}\underset{Cl\,\,}{\mathop{\underset{\|\,\,\,\,\,\,}{\mathop{\overset{Cl\,}{\mathop{\overset{\|\,\,\,\,\,}{\mathop{CH}}\,}}\,}}\,}}\,\]
D.	\[C{{H}_{3}}\overset{Cl}{\mathop{\overset{\|}{\mathop{-CH}}\,}}\,\overset{Cl}{\mathop{\overset{\|}{\mathop{-CH}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]
Answer» B. \[C{{H}_{3}}C{{H}_{2}}\underset{Cl}{\mathop{\underset{\|}{\mathop{\overset{Cl}{\mathop{\overset{\|}{\mathop{-C-}}\,}}\,}}\,}}\,C{{H}_{2}}C{{H}_{3}}\]

Discussion

1723.	Which of the following will form two isomers with semi carbazide [Orissa JEE 2005]
A.	Benzaldehyde
B.	Acetone
C.	Benzoquinone
D.	Benzophenone
Answer» B. Acetone

Discussion

1724.	Ketones react with Mg-Hg over water gives [AFMC 2005]
A.	Pinacolone
B.	Pinacols
C.	Alcohols
D.	None of these
Answer» C. Alcohols

Discussion

1725.	How will you convert butan-2-one to propanoic acid? [IIT 2005]
A.	Tollen-s reagent
B.	Fehling's solution
C.	\[NaOH/{{I}_{2}}/{{H}^{+}}\]
D.	\[NaOH/NaI/{{H}^{+}}\]
Answer» D. \[NaOH/NaI/{{H}^{+}}\]

Discussion

1726.	Which of the following does not give Fehling solution test? [BCECE 2005]
A.	Acetone
B.	Propanal
C.	Ethanal
D.	Butanal
Answer» B. Propanal

Discussion

1727.	Methyl ketone group is identified by [BCECE 2005]
A.	Iodoform test
B.	Fehling solution
C.	Tollen?s reagent
D.	Shiff?s reagent
Answer» B. Fehling solution

Discussion

1728.	Acetaldehyde when treated with dilute NaOH gives [EAMCET 1998]
A.	\[C{{H}_{3}}C{{H}_{2}}OH\]
B.	\[C{{H}_{3}}COOH\]
C.	\[C{{H}_{3}}-\underset{\underset{OH}{\mathop{\|}}\,}{\mathop{CH}}\,-C{{H}_{2}}-CHO\]
D.	\[C{{H}_{3}}-C{{H}_{3}}\]
Answer» D. \[C{{H}_{3}}-C{{H}_{3}}\]

Discussion

1729.	Hexamethylene tetramine is used as [MP PMT 1979, 84]
A.	Analgesic
B.	Antipyretic
C.	Urinary antiseptic
D.	All of these
Answer» D. All of these

Discussion

1730.	Paraldehyde is used as a [CBSE PMT 1989]
A.	Medicine
B.	Poison
C.	Polymer
D.	Dye
Answer» B. Poison

Discussion

1731.	Paraldehyde is [CPMT 1985; MP PET 1992, 96; RPMT 2000]
A.	A trimer of formaldehyde
B.	A trimer of acetaldehyde
C.	A hexamer of formaldehyde
D.	A hexamer of acetaldehyde
Answer» E.

Discussion

1732.	The most appropriate reagent to distinguish between acetaldehyde and formaldehyde is [UPSEAT 2004]
A.	Fehling's solution
B.	Tollen's reagent
C.	Schiff's reagent
D.	Iodine in presence of base
Answer» E.

Discussion

1733.	The pair of compounds in which both the compounds give positive test with Tollen's reagent is [IIT-JEE (Screening) 2004]
A.	Glucose and Sucrose
B.	Fructose and Sucrose
C.	Acetophenone and Hexanal
D.	Glucose and Fructose
Answer» E.

Discussion

1734.	Which responds to +ve iodoform test? [Orissa JEE 2004]
A.	Butanol
B.	Butan-1-al
C.	Butanol-2
D.	3-pentanone
Answer» D. 3-pentanone

Discussion

1735.	A compound has a vapour density of 29. On warming an aqueous solution of alkali, it gives a yellow precipitate. The compound is [DPMT 2004]
A.	\[C{{H}_{3}}C{{H}_{2}}CHO\]
B.	\[C{{H}_{3}}CHOHC{{H}_{3}}\]
C.	\[C{{H}_{3}}COC{{H}_{3}}\]
D.	\[C{{H}_{3}}C{{H}_{2}}COOH\]
Answer» B. \[C{{H}_{3}}CHOHC{{H}_{3}}\]

Discussion

1736.	Wolf kishner reduction, reduces [Pb. CET 2003]
A.	\[-COOH\] group
B.	\[-C\equiv C-\] group
C.	\[-CHO\] group
D.	\[-O-\]group
Answer» D. \[-O-\]group

Discussion

1737.	Fehling solution is [Pb. CET 2003]
A.	\[CuS{{O}_{4}}\]+ lime
B.	\[CuS{{O}_{4}}+NaOH(aq)\]
C.	\[CuS{{O}_{4}}+N{{a}_{2}}C{{O}_{3}}\]
D.	None of these
Answer» E.

Discussion

1738.	In Wolf-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into [Pb. CET 2000]
A.	\[>C{{H}_{2}}\] group
B.	\[-C{{H}_{3}}\] group
C.	\[-C{{H}_{2}}OH\]group
D.	\[>CHOH\] group
Answer» B. \[-C{{H}_{3}}\] group

Discussion

1739.	The order of susceptibility of nucleophilic attack on aldehydes follows the order [DCE 2002]
A.	\[1{}^\circ >3{}^\circ >2{}^\circ ~\]
B.	\[1{}^\circ >2{}^\circ >3{}^\circ ~\]
C.	\[3{}^\circ >2{}^\circ >1{}^\circ ~\]
D.	\[2{}^\circ >3{}^\circ >1{}^\circ ~\]
Answer» C. \[3{}^\circ >2{}^\circ >1{}^\circ ~\]

Discussion

1740.	Acetaldehyde and Acetone can be distinguished by [DCE 2003]
A.	Iododorm test
B.	Nitroprusside test
C.	Fehling's solution test
D.	DNP test
Answer» D. DNP test

Discussion

1741.	The aldehyde which react with NaOH to produce an alcohol and sodium salt is [Pb. PMT 2004]
A.	HCHO
B.	\[C{{H}_{3}}CHO\]
C.	\[C{{H}_{3}}C{{H}_{2}}CHO\]
D.	\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHO\]
Answer» B. \[C{{H}_{3}}CHO\]

Discussion

1742.	\[A\xrightarrow{{}}{{(C{{H}_{3}})}_{2}}C=CHCOC{{H}_{3}}A\] is [MHCET 2004]
A.	Acetone
B.	Acetaldehyde
C.	Propionaldehyde
D.	Formaldehyde
Answer» B. Acetaldehyde

Discussion

1743.	Which of the following aldehydes give red precipitate with Fehling solution ? [MHCET 2004]
A.	Benzaldehyde
B.	Salicylaldehyde
C.	Acetaldehyde
D.	None of these
Answer» D. None of these

Discussion

1744.	Which of the following organic compounds exhibits positive Fehling test as well as iodoform test [MP PET 1994; KCET 2001]
A.	Methanal
B.	Ethanol
C.	Propanone
D.	Ethanal
Answer» E.

Discussion

1745.	Which of the following is used to detect aldehydes [MHCET 2004]
A.	Million's test
B.	Tollen's reagent
C.	Neutral ferric chloride solution
D.	Molisch's test
Answer» C. Neutral ferric chloride solution

Discussion

1746.	Cyanohydrin of which of the following forms lactic acid [MHCET 2003]
A.	\[C{{H}_{3}}C{{H}_{2}}CHO\]
B.	\[C{{H}_{3}}CHO\]
C.	\[HCHO\]
D.	\[C{{H}_{3}}COC{{H}_{3}}\]
Answer» C. \[HCHO\]

Discussion

1747.	Acetone reacts with iodine to form iodoform in the presence of [BHU 2004; CPMT 2004]
A.	\[CaC{{O}_{3}}\]
B.	\[NaOH\]
C.	\[KOH\]
D.	\[MgC{{O}_{3}}\]
Answer» C. \[KOH\]

Discussion

1748.	Aldehydes and ketones can be reduced to corresponding hydrocarbons by [Kerala PMT 2004]
A.	Refluxing with water
B.	Refluxing with strong acids
C.	Refluxing with soda amalgam and water
D.	Refluxing with zinc amalgam and concentrated HCl
E.	Passing the vapour under heated \[Pb{{O}_{2}}\]
Answer» E. Passing the vapour under heated \[Pb{{O}_{2}}\]

Discussion

1749.	Three molecules of acetone in the presence of dry HCl form [MP PET 2004]
A.	Mesitylene
B.	Phorone
C.	Glyoxal
D.	Mesityl oxide
Answer» C. Glyoxal

Discussion

1750.	Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon [AIEEE 2004]
A.	Acetamide
B.	Acetic acid
C.	Ethyl acetate
D.	Butan?2?one
Answer» E.

Discussion

Explore topic-wise MCQs in Joint Entrance Exam - Main (JEE Main).

Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as [MNR 1987]

\[3C{{H}_{3}}COC{{H}_{3}}\xrightarrow{HCl}{{(C{{H}_{3}})}_{2}}C=CH-CO-CH=C{{(C{{H}_{3}})}_{2}}\] This polymer is obtained when acetone is saturated with hydrogen chloride gas, B can be [CBSE PMT 1989]

Aldol condensation of acetaldehyde involves the formation of which of the following intermediate [Pb. CET 1986]

Treatment of propionaldehyde with dilute NaOH solution gives [MNR 1992]

Acetaldehyde reacts with \[{{C}_{2}}{{H}_{5}}MgCl\] the final product is [Pb. CET 1985]

Which of the following reagent reacts differently with \[HCHO,\,C{{H}_{3}}CHO\] and \[C{{H}_{3}}COC{{H}_{3}}\] [MP PET 1999]

If formaldehyde and KOH are heated, then we get [MP PET 1999; KCET 2000]

The light yellow compound produced when acetone reacts with iodine and alkali, is [MP PMT 1992; EAMCET 1993]

A and B in the following reactions are \[R-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-{R}'\underset{KCN}{\mathop{\xrightarrow{HCN}}}\,A\xrightarrow{B}\begin{matrix} R \\ R \\ \end{matrix}\,>C

Haloform test is given by the following substance [EAMCET 1988]

Which of the following does not give iodoform test [AIIMS 1992; MP PMT 1990, 96; CET Pune 1998 DPMT 1981; CPMT 1976]

Which of the following will not give the iodoform test [MNR 1994]

Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as [KCET 2005]

To distinguish between formaldehyde and acetaldehyde, we require [Orissa PMT 1987]

The following reagent converts \[{{C}_{6}}{{H}_{5}}COCHO\] to \[{{C}_{6}}{{H}_{5}}CHOHCOONa\] [Roorkee Qualifying 1998]

Acetaldehyde cannot show [AIIMS 1997]

Which of the following oxidation reactions can be carried out with chromic acid in aqueous acetone at \[5-{{10}^{o}}C\] [Roorkee Qualifying 1998]

When m-chlorobenzaldehyde is treated with 50% KOH solution, the product (s) obtained is (are) [CBSE PMT 2003]

\[{{C}_{2}}{{H}_{5}}CHO\] and \[{{(C{{H}_{3}})}_{2}}CO\] can be distinguished by testing with [EAMCET 1998; CPMT 1994, 97; MP PET 1995; MP PMT 1996; RPMT 1997, 99]

Which one does not give cannizzaro's reaction [Kerala CET 2005]

\[C{{H}_{3}}-CHO+HCN\to A\]; Compound \[A\] on hydrolysis gives [Kerala CET 2005]

A compound \[A\to {{C}_{5}}{{H}_{10}}C{{l}_{2}}\] on hydrolysis gives \[{{C}_{5}}{{H}_{10}}O\] which reacts with \[N{{H}_{2}}OH\], forms iodoform but does not give fehling test. \[A\] is [DPMT 2005]

Which of the following will form two isomers with semi carbazide [Orissa JEE 2005]

Ketones react with Mg-Hg over water gives [AFMC 2005]

How will you convert butan-2-one to propanoic acid? [IIT 2005]

Which of the following does not give Fehling solution test? [BCECE 2005]

Methyl ketone group is identified by [BCECE 2005]

Acetaldehyde when treated with dilute NaOH gives [EAMCET 1998]

Hexamethylene tetramine is used as [MP PMT 1979, 84]

Paraldehyde is used as a [CBSE PMT 1989]

Paraldehyde is [CPMT 1985; MP PET 1992, 96; RPMT 2000]

The most appropriate reagent to distinguish between acetaldehyde and formaldehyde is [UPSEAT 2004]

The pair of compounds in which both the compounds give positive test with Tollen's reagent is [IIT-JEE (Screening) 2004]

Which responds to +ve iodoform test? [Orissa JEE 2004]

A compound has a vapour density of 29. On warming an aqueous solution of alkali, it gives a yellow precipitate. The compound is [DPMT 2004]

Wolf kishner reduction, reduces [Pb. CET 2003]

Fehling solution is [Pb. CET 2003]

In Wolf-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into [Pb. CET 2000]

The order of susceptibility of nucleophilic attack on aldehydes follows the order [DCE 2002]

Acetaldehyde and Acetone can be distinguished by [DCE 2003]

The aldehyde which react with NaOH to produce an alcohol and sodium salt is [Pb. PMT 2004]

\[A\xrightarrow{{}}{{(C{{H}_{3}})}_{2}}C=CHCOC{{H}_{3}}A\] is [MHCET 2004]

Which of the following aldehydes give red precipitate with Fehling solution ? [MHCET 2004]

Which of the following organic compounds exhibits positive Fehling test as well as iodoform test [MP PET 1994; KCET 2001]

Which of the following is used to detect aldehydes [MHCET 2004]

Cyanohydrin of which of the following forms lactic acid [MHCET 2003]

Acetone reacts with iodine to form iodoform in the presence of [BHU 2004; CPMT 2004]

Aldehydes and ketones can be reduced to corresponding hydrocarbons by [Kerala PMT 2004]

Three molecules of acetone in the presence of dry HCl form [MP PET 2004]

Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon [AIEEE 2004]