11242 + Mcqs in Chemistry Page 52 McqOptions

2551.	Reimer-Tiemann reaction involves a [MP PET 1997]
A.	Carbonium ion intermediate
B.	Carbene intermediate
C.	Carbanion intermediate
D.	Free radical intermediate
Answer» C. Carbanion intermediate

Discussion

2552.	In the commercial manufacture of ethyl alcohol from starchy substances by fermentation method, which enzymes stepwise complete the fermentation reaction [BIT 1992]
A.	Diastase, maltase and zymase
B.	Maltase, zymase and invertase
C.	Diastase, zymase and lactase
D.	Diastase, invertase and zymase
Answer» B. Maltase, zymase and invertase

Discussion

2553.	Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives [IIT-JEE 1990]
A.	o-cresol
B.	p-cresol
C.	2, 4-dihydroxy toluene
D.	Benzyl alcohol
Answer» E.

Discussion

2554.	Which enzyme converts glucose and fructose both into ethanol [MP PMT 1989, 90, 96; CPMT 1983, 84, 86, 94; KCET 1989; MNR 1978; MP PET 1994, 99]
A.	Diastase
B.	Invertase
C.	Zymase
D.	Maltase
Answer» D. Maltase

Discussion

2555.	Methylphenyl ether can be obtained by reacting [J & K 2005]
A.	Phenolate ions and methyl iodide
B.	Methoxide ions and bromobenzene
C.	Methanol and phenol
D.	Bromo benzene and methyl bromide
Answer» B. Methoxide ions and bromobenzene

Discussion

2556.	Which is formed when benzalamine react with nitrous acid [KCET (Med.) 2001]
A.	\[{{C}_{6}}{{H}_{5}}OH\]
B.	\[{{C}_{6}}{{H}_{5}}ON\]
C.	\[{{C}_{2}}{{H}_{5}}{{N}_{2}}OH\]
D.	\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]
Answer» E.

Discussion

2557.	Acid catalyzed hydration of alkenes except ethene leads to the formation of [AIEEE 2005]
A.	Primary alcohol
B.	Secondary or tertiary alcohol
C.	Mixture of primary and secondary alcohols
D.	Mixture of secondary and tertiary alcohols
Answer» C. Mixture of primary and secondary alcohols

Discussion

2558.	Alkenes convert into alcohols by [MP PET 1991]
A.	Hydrolysis by dil. \[{{H}_{2}}S{{O}_{4}}\]
B.	Hydration of alkene by alkaline \[KMn{{O}_{4}}\]
C.	Hydrolysis by water vapours and conc. \[{{H}_{2}}S{{O}_{4}}\]
D.	Hydration of alkene by aqueous KOH
Answer» C. Hydrolysis by water vapours and conc. \[{{H}_{2}}S{{O}_{4}}\]

Discussion

2559.	\[{{C}_{6}}{{H}_{5}}-CH=CHCHO\xrightarrow{X}{{C}_{6}}{{H}_{5}}CH=CHC{{H}_{2}}OH\]. In the above sequence X can be [DCE 2004]
A.	\[{{H}_{2}}/Ni\]
B.	\[NaB{{H}_{4}}\]
C.	\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}^{+}}\]
D.	Both A and B
Answer» C. \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}^{+}}\]

Discussion

2560.	Which of the following combinations can be used to synthesize ethanol [KCET 2004]
A.	\[C{{H}_{3}}MgI\] and \[C{{H}_{3}}COC{{H}_{3}}\]
B.	\[C{{H}_{3}}MgI\] and \[{{C}_{2}}{{H}_{5}}OH\]
C.	\[C{{H}_{3}}MgI\] and \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]
D.	\[C{{H}_{3}}MgI\] and \[HCOO{{C}_{2}}{{H}_{5}}\]
Answer» D. \[C{{H}_{3}}MgI\] and \[HCOO{{C}_{2}}{{H}_{5}}\]

Discussion

2561.	In which case methyl-t-butyl ether is formed [Orissa JEE 2004]
A.	\[{{({{C}_{2}}{{H}_{5}})}_{3}}CONa+C{{H}_{3}}Cl\]
B.	\[{{(C{{H}_{3}})}_{3}}CONa+C{{H}_{3}}Cl\]
C.	\[{{(C{{H}_{3}})}_{3}}CONa+{{C}_{2}}{{H}_{5}}Cl\]
D.	\[{{(C{{H}_{3}})}_{3}}CONa+C{{H}_{3}}Cl\]
Answer» C. \[{{(C{{H}_{3}})}_{3}}CONa+{{C}_{2}}{{H}_{5}}Cl\]

Discussion

2562.	Which of the following is industrially prepared by passing ethylene into hypochlorous acid [BHU 2004]
A.	Ethylene glycol
B.	Ethylene oxide
C.	Ethylene dinitrate
D.	Ethane
Answer» B. Ethylene oxide

Discussion

2563.	When ethanal reacts with \[C{{H}_{3}}MgBr\] and \[{{C}_{2}}{{H}_{5}}OH\]/dry HCl the product formed are [DCE 2003]
A.	Ethyl alcohol and 2-propanol
B.	Ethane and hemi-acetal
C.	2-propanol and acetal
D.	Propane and methyl acetate
Answer» D. Propane and methyl acetate

Discussion

2564.	Which of the following is formed when benzaldehyde reacts with sodium hydroxide [Pb. CET 2002]
A.	Benzyl alcohol
B.	Benzoic acid
C.	Glucose
D.	Acetic acid
Answer» B. Benzoic acid

Discussion

2565.	What is obtained when chlorine is passed in boiling toluene and product is hydrolysed [DCE 2004]
A.	o-Cresol
B.	p-Cresol
C.	2, 4-Dihydroxytoluene
D.	Benzyl alcohol
Answer» E.

Discussion

2566.	Acetyl bromide reacts with excess of \[C{{H}_{3}}MgI\] followed by treatment with a saturated solution of \[N{{H}_{4}}Cl\] gives [AIEEE 2004]
A.	2-methyl-2-propanol
B.	Acetamide
C.	Acetone
D.	Acetyl iodide
Answer» B. Acetamide

Discussion

2567.	The reagent used for the preparation of higher ether from halogenated ethers is [Tamil Nadu CET 2001]
A.	conc. \[{{H}_{2}}S{{O}_{4}}\]
B.	Sodium alkoxide
C.	Dry silver oxide
D.	Grignard reagent
Answer» E.

Discussion

2568.	The compound formed when ethyl bromide is heated with dry silver oxide is [MP PET/PMT 1988]
A.	Dimethyl ether
B.	Diethyl ether
C.	Methyl alcohol
D.	Ethyl alcohol
Answer» C. Methyl alcohol

Discussion

2569.	Formation of diethyl ether from ethanol is based on a [BVP 2003]
A.	Dehydration reaction
B.	Dehydrogenation reaction
C.	Hydrogenation reaction
D.	Heterolytic fission reaction
Answer» B. Dehydrogenation reaction

Discussion

2570.	The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000]
A.	\[{{O}_{2}}\]
B.	Air
C.	\[C{{O}_{2}}\]
D.	Enzymes
Answer» E.

Discussion

2571.	In Williamson's synthesis, ethoxyethane is prepared by [MP PMT 1995; BHU 2005]
A.	Passing ethanol over heated alumina
B.	Sodium ethoxide with ethyl bromide
C.	Ethyl alcohol with sulphuric acid
D.	Ethyl iodide and dry silver oxide
Answer» C. Ethyl alcohol with sulphuric acid

Discussion

2572.	Williamson's synthesis is used to prepare [DPMT 1976, 81, 82, 83, 84; CPMT 1976, 82]
A.	Acetone
B.	Diethyl ether
C.	P.V.C.
D.	Bakelite
Answer» C. P.V.C.

Discussion

2573.	From Williamson?s synthesis preparation of which of following is possible
A.	Only symmetrical ethers
B.	Only symmetrical ethers
C.	Both types
D.	None of these
Answer» D. None of these

Discussion

2574.	In the reaction \[Ar-OH+Rx\xrightarrow{\text{alkali}}A,\] A is [MP PET 1994]
A.	An aldehyde
B.	An aryl chloride
C.	An ether
D.	A ketone
Answer» D. A ketone

Discussion

2575.	Action of water in the presence of sulphuric acid with the following alkenes (i) \[C{{H}_{3}}-CH=C
A.	\[C{{H}_{3}}-C{{H}_{2}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,\ \ }}\,<\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}\] and (ii) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,H}}\,-C{{H}_{3}}\]
B.	(i) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,H}}\,=CH<\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}\] and(ii) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]
C.	(i) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,H}}\,-CH<\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}\] and (ii) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,H}}\,-C{{H}_{3}}\]
D.	(i) \[C{{H}_{3}}-C{{H}_{2}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,\ \ }}\,<\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}\] and(ii) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]
Answer» B. (i) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{\|}{\mathop{C}}\,H}}\,=CH<\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}\] and(ii) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]

Discussion

2576.	Commercially methanol is prepared by [IIT 1984; MP PMT 1990; KCET 1992]
A.	Reduction of CO in presence of \[ZnO.C{{r}_{2}}{{O}_{3}}\]
B.	Methane reacts with water vapours at \[{{900}^{o}}C\] in presence of Ni catalyst
C.	Reduction of HCHO by \[LiAl{{H}_{4}}\]
D.	Reduction of HCHO by aqueous NaOH
Answer» B. Methane reacts with water vapours at \[{{900}^{o}}C\] in presence of Ni catalyst

Discussion

2577.	The product of reduction of benzaldehyde is
A.	Benzoic acid
B.	Benzyl alcohol
C.	Benzene
D.	Catechol
Answer» C. Benzene

Discussion

2578.	Action of nitrous acid with ethylamine produces [BHU 2000]
A.	Ethane
B.	Ammonia
C.	Ethyl alcohol
D.	Nitroethane
Answer» D. Nitroethane

Discussion

2579.	Which one of the following will produce a primary alcohol by reacting with \[C{{H}_{3}}MgI\] [MP PET 1991]
A.	Acetone
B.	Methyl cyanide
C.	Ethylene oxide
D.	Ethyl acetate
Answer» D. Ethyl acetate

Discussion

2580.	Which gas is eliminated in fermentation [RPMT 1997]
A.	\[{{O}_{2}}\]
B.	\[C{{O}_{2}}\]
C.	\[{{N}_{2}}\]
D.	\[{{H}_{2}}\]
Answer» C. \[{{N}_{2}}\]

Discussion

2581.	When 2-ethylanthraquinol dissolved in a mixture of benzene and cyclohexanol is oxidised, the product is [JIPMER 1999]
A.	Ethanol
B.	Hydrogen peroxide
C.	Anthracene
D.	None of these
Answer» B. Hydrogen peroxide

Discussion

2582.	The compound that will react most readily with NaOH to form methanol is [IIT-JEE (Screening) 2001]
A.	\[{{(C{{H}_{3}})}_{4}}{{N}^{+}}{{I}^{-}}\]
B.	\[C{{H}_{3}}OC{{H}_{3}}\]
C.	\[{{(C{{H}_{3}})}_{3}}{{S}^{+}}{{I}^{-}}\]
D.	\[{{(C{{H}_{3}})}_{3}}Cl\]
Answer» B. \[C{{H}_{3}}OC{{H}_{3}}\]

Discussion

2583.	The reaction between an ester and excess of Grignard reagent shall finally result in a [UPSEAT 2000]
A.	Primary alcohol
B.	Secondary alcohol
C.	Tertiary alcohol
D.	Ketone
Answer» D. Ketone

Discussion

2584.	RMgBr on reaction with an excess of oxygen followed by hydrolysis gives [Roorkee Qualifying 1998]
A.	RH
B.	ROOR
C.	ROOH
D.	ROH
Answer» E.

Discussion

2585.	Reaction of aqueous sodium hydroxide on (i) ethyl bromide and (ii) chlorobenzene gives
A.	(i) Ethene and (ii) o-chlorophenol
B.	(i) Ethyl alcohol and (ii) o-chlorophenol
C.	(i) Ethyl alcohol and (ii) phenol
D.	(i) Ethyl alcohol an d(ii) no reaction
Answer» D. (i) Ethyl alcohol an d(ii) no reaction

Discussion

2586.	Which one is not synthesized by Grignard reagent [MP PET 1991]
A.	Primary alcohol
B.	Secondary alcohol
C.	A ketone
D.	An ester
Answer» E.

Discussion

2587.	Sodium benzene sulphonate reacts with NaOH and then on acidic hydrolysis, it gives [Roorkee 1995; KCET 1998]
A.	Phenol
B.	Benzoic acid
C.	Benzene
D.	Disodium benzaldehyde
Answer» B. Benzoic acid

Discussion

2588.	\[{{C}_{2}}{{H}_{5}}MgI\] reacts with HCHO to form last product [MP PMT 1991]
A.	\[C{{H}_{3}}CHO\]
B.	\[{{C}_{3}}{{H}_{7}}OH\]
C.	\[C{{H}_{3}}COC{{H}_{3}}\]
D.	\[C{{H}_{3}}COOC{{H}_{3}}\]
Answer» C. \[C{{H}_{3}}COC{{H}_{3}}\]

Discussion

2589.	Propene, \[C{{H}_{3}}-CH=C{{H}_{2}}\] can be converted to 1-propanol by oxidation. Which set of reagents among the following is ideal to effect the conversion [CBSE PMT 1991]
A.	Alkaline \[KMn{{O}_{4}}\]
B.	\[{{B}_{2}}{{H}_{6}}\] and alkaline \[{{H}_{2}}{{O}_{2}}\]
C.	\[{{O}_{3}}/Zn\] dust
D.	\[Os{{O}_{4}}/C{{H}_{4}},C{{l}_{2}}\]
Answer» C. \[{{O}_{3}}/Zn\] dust

Discussion

2590.	In the following reaction 'A' is \[\begin{align} & {{C}_{2}}{{H}_{5}}MgBr+{{H}_{2}}C-C{{H}_{2}}\xrightarrow{{{H}_{2}}O}A \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\overset{\backslash /}{\mathop{O}}\, \\ \end{align}\] [MP PET 1994; CBSE PMT 1998]
A.	\[{{C}_{2}}{{H}_{5}}C{{H}_{2}}CHO\]
B.	\[{{C}_{2}}{{H}_{5}}C{{H}_{2}}C{{H}_{2}}OH\]
C.	\[{{C}_{2}}{{H}_{5}}C{{H}_{2}}OH\]
D.	\[{{C}_{2}}{{H}_{5}}CHO\]
Answer» C. \[{{C}_{2}}{{H}_{5}}C{{H}_{2}}OH\]

Discussion

2591.	Oil \[+NaO{{H}_{(aq)}}\xrightarrow{\Delta }\]Glycerol + Soap Above reaction is called [UPSEAT 2001]
A.	Saponification
B.	Esterification
C.	Hydrogenation
D.	None of these
Answer» B. Esterification

Discussion

2592.	Acetone on treatment with \[C{{H}_{3}}-Mg-I\] and on further hydrolysis gives [UPSEAT 2000]
A.	Isopropyl alcohol
B.	Primary alcohol
C.	Acetic acid
D.	2-methyl 2-propanol
Answer» E.

Discussion

2593.	Grignard reagent reacts with compounds containing which of the following groups [MNR 1987]
A.	\[>C=O\]
B.	\[-C\equiv N\]
C.	\[>C=S\]
D.	All of these
Answer» E.

Discussion

2594.	Absolute alcohol can be obtained from rectified spirit [KCET 1985]
A.	By removing the water in it using concentrated sulphuric acid
B.	By removing the water using phosphorus pentoxide
C.	By distilling with the appropriate amount of benzene
D.	By distilling over plenty of quick lime
Answer» D. By distilling over plenty of quick lime

Discussion

2595.	Maltose on hydrolysis gives [BHU 1996; CPMT 2001]
A.	Mannose + glucose
B.	Galactose + glucose
C.	Glucose
D.	Mannose + fructose
Answer» D. Mannose + fructose

Discussion

2596.	Phenolphthalein is obtained by heating phthalic anhydride with conc. \[{{H}_{2}}S{{O}_{4}}\] and [BHU 1996]
A.	Benzyl alcohol
B.	Benzene
C.	Phenol
D.	Benzoic acid
Answer» D. Benzoic acid

Discussion

2597.	The reaction, water gas \[(CO+{{H}_{2}})+{{H}_{2}}\,\,673K,\,300\] atmosphere in presence of the catalyst \[C{{r}_{2}}{{O}_{3}}/ZnO\] is used for the manufacture of [MP PMT 1989]
A.	HCHO
B.	HCOOH
C.	\[C{{H}_{3}}OH\]
D.	\[C{{H}_{3}}COOH\]
Answer» D. \[C{{H}_{3}}COOH\]

Discussion

2598.	\[C{{H}_{2}}=C{{H}_{2}}+{{B}_{2}}{{H}_{6}}\]\[\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{NaOH}}}\,\ \text{Product}\text{.}\] Product in above reaction is [RPMT 2003]
A.	\[C{{H}_{3}}C{{H}_{2}}CHO\]
B.	\[C{{H}_{3}}C{{H}_{2}}OH\]
C.	\[C{{H}_{3}}CHO\]
D.	None of these
Answer» C. \[C{{H}_{3}}CHO\]

Discussion

2599.	\[A\underset{\text{dil}\text{. }{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{{{K}_{2}}C{{r}_{2}}{{O}_{7}}}}}\,B\underset{{{H}_{2}}O}{\mathop{\xrightarrow{C{{H}_{3}}MgI}}}\,C{{H}_{3}}-\underset{OH\ \ \ \ \ \ }{\overset{C{{H}_{3}}\ \ \ \ }{\mathop{\underset{\|}{\overset{\|}{\mathop{C}}}\,-C{{H}_{3}}}}}\,\]. The reactant A is [MH CET 2002, 03; AFMC 2004; MP PMT/PET 1988; EAMCET 1989; CPMT 1988; MP PET 2000]
A.	\[C{{H}_{3}}CHOHC{{H}_{3}}\]
B.	\[C{{H}_{3}}COC{{H}_{3}}\]
C.	\[{{C}_{2}}{{H}_{5}}OH\]
D.	\[C{{H}_{3}}COOH\]
Answer» C. \[{{C}_{2}}{{H}_{5}}OH\]

Discussion

2600.	Ethyl alcohol is industrially prepared from ethylene by [CPMT 1985]
A.	Permanganate oxidation
B.	Catalytic reduction
C.	Absorbing in \[{{H}_{2}}S{{O}_{4}}\] followed by hydrolysis
D.	Fermentation
Answer» D. Fermentation

Discussion

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

Reimer-Tiemann reaction involves a [MP PET 1997]

In the commercial manufacture of ethyl alcohol from starchy substances by fermentation method, which enzymes stepwise complete the fermentation reaction [BIT 1992]

Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives [IIT-JEE 1990]

Which enzyme converts glucose and fructose both into ethanol [MP PMT 1989, 90, 96; CPMT 1983, 84, 86, 94; KCET 1989; MNR 1978; MP PET 1994, 99]

Methylphenyl ether can be obtained by reacting [J & K 2005]

Which is formed when benzalamine react with nitrous acid [KCET (Med.) 2001]

Acid catalyzed hydration of alkenes except ethene leads to the formation of [AIEEE 2005]

Alkenes convert into alcohols by [MP PET 1991]

\[{{C}_{6}}{{H}_{5}}-CH=CHCHO\xrightarrow{X}{{C}_{6}}{{H}_{5}}CH=CHC{{H}_{2}}OH\]. In the above sequence X can be [DCE 2004]

Which of the following combinations can be used to synthesize ethanol [KCET 2004]

In which case methyl-t-butyl ether is formed [Orissa JEE 2004]

Which of the following is industrially prepared by passing ethylene into hypochlorous acid [BHU 2004]

When ethanal reacts with \[C{{H}_{3}}MgBr\] and \[{{C}_{2}}{{H}_{5}}OH\]/dry HCl the product formed are [DCE 2003]

Which of the following is formed when benzaldehyde reacts with sodium hydroxide [Pb. CET 2002]

What is obtained when chlorine is passed in boiling toluene and product is hydrolysed [DCE 2004]

Acetyl bromide reacts with excess of \[C{{H}_{3}}MgI\] followed by treatment with a saturated solution of \[N{{H}_{4}}Cl\] gives [AIEEE 2004]

The reagent used for the preparation of higher ether from halogenated ethers is [Tamil Nadu CET 2001]

The compound formed when ethyl bromide is heated with dry silver oxide is [MP PET/PMT 1988]

Formation of diethyl ether from ethanol is based on a [BVP 2003]

The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000]

In Williamson's synthesis, ethoxyethane is prepared by [MP PMT 1995; BHU 2005]

Williamson's synthesis is used to prepare [DPMT 1976, 81, 82, 83, 84; CPMT 1976, 82]

From Williamson?s synthesis preparation of which of following is possible

In the reaction \[Ar-OH+Rx\xrightarrow{\text{alkali}}A,\] A is [MP PET 1994]

Action of water in the presence of sulphuric acid with the following alkenes (i) \[C{{H}_{3}}-CH=C

Commercially methanol is prepared by [IIT 1984; MP PMT 1990; KCET 1992]

The product of reduction of benzaldehyde is

Action of nitrous acid with ethylamine produces [BHU 2000]

Which one of the following will produce a primary alcohol by reacting with \[C{{H}_{3}}MgI\] [MP PET 1991]

Which gas is eliminated in fermentation [RPMT 1997]

When 2-ethylanthraquinol dissolved in a mixture of benzene and cyclohexanol is oxidised, the product is [JIPMER 1999]

The compound that will react most readily with NaOH to form methanol is [IIT-JEE (Screening) 2001]

The reaction between an ester and excess of Grignard reagent shall finally result in a [UPSEAT 2000]

RMgBr on reaction with an excess of oxygen followed by hydrolysis gives [Roorkee Qualifying 1998]

Reaction of aqueous sodium hydroxide on (i) ethyl bromide and (ii) chlorobenzene gives

Which one is not synthesized by Grignard reagent [MP PET 1991]

Sodium benzene sulphonate reacts with NaOH and then on acidic hydrolysis, it gives [Roorkee 1995; KCET 1998]

\[{{C}_{2}}{{H}_{5}}MgI\] reacts with HCHO to form last product [MP PMT 1991]

Propene, \[C{{H}_{3}}-CH=C{{H}_{2}}\] can be converted to 1-propanol by oxidation. Which set of reagents among the following is ideal to effect the conversion [CBSE PMT 1991]

In the following reaction 'A' is \[\begin{align} & {{C}_{2}}{{H}_{5}}MgBr+{{H}_{2}}C-C{{H}_{2}}\xrightarrow{{{H}_{2}}O}A \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\overset{\backslash /}{\mathop{O}}\, \\ \end{align}\] [MP PET 1994; CBSE PMT 1998]

Oil \[+NaO{{H}_{(aq)}}\xrightarrow{\Delta }\]Glycerol + Soap Above reaction is called [UPSEAT 2001]

Acetone on treatment with \[C{{H}_{3}}-Mg-I\] and on further hydrolysis gives [UPSEAT 2000]

Grignard reagent reacts with compounds containing which of the following groups [MNR 1987]

Absolute alcohol can be obtained from rectified spirit [KCET 1985]

Maltose on hydrolysis gives [BHU 1996; CPMT 2001]

Phenolphthalein is obtained by heating phthalic anhydride with conc. \[{{H}_{2}}S{{O}_{4}}\] and [BHU 1996]

The reaction, water gas \[(CO+{{H}_{2}})+{{H}_{2}}\,\,673K,\,300\] atmosphere in presence of the catalyst \[C{{r}_{2}}{{O}_{3}}/ZnO\] is used for the manufacture of [MP PMT 1989]

\[C{{H}_{2}}=C{{H}_{2}}+{{B}_{2}}{{H}_{6}}\]\[\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{NaOH}}}\,\ \text{Product}\text{.}\] Product in above reaction is [RPMT 2003]

Ethyl alcohol is industrially prepared from ethylene by [CPMT 1985]