-
question_answer1)
Which of the following gases is used for welding [CPMT 1996]
A)
Methane done
clear
B)
Ethane done
clear
C)
Acetylene done
clear
D)
Ethene done
clear
View Solution play_arrow
-
question_answer2)
A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is [NCERT 1975; CPMT 1977; MP PET 2002]
A)
Methane done
clear
B)
Ethane done
clear
C)
Acetylene done
clear
D)
Ethylene done
clear
View Solution play_arrow
-
question_answer3)
1-butyne reacts with cold alkaline \[KMn{{O}_{4}}\] to produce [AIIMS 1997]
A)
\[C{{H}_{3}}C{{H}_{2}}COOH\] done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH\] done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}COOH+C{{O}_{2}}\] done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}COOH+HCOOH\] done
clear
View Solution play_arrow
-
question_answer4)
Identify the product D in the following series of reaction \[C{{H}_{3}}COOH\xrightarrow{LiAl{{H}_{4}}}A\underset{443K}{\mathop{\xrightarrow{{{H}^{+}}}}}\,B\xrightarrow{B{{r}_{2}}}C\underset{KOH}{\mathop{\xrightarrow{alc.}}}\,D\] [CBSE PMT 1998] Methane
A)
done
clear
B)
Alcohol done
clear
C)
Acetylene done
clear
D)
Benzaldehyde done
clear
View Solution play_arrow
-
question_answer5)
The correct order towards bond length is [RPMT 1997]
A)
\[C-C<C=C<C\equiv C\] done
clear
B)
\[C\equiv C<C=C<C-C\] done
clear
C)
\[C=C<C\equiv C<C-C\] done
clear
D)
\[C=C<C-C<C\equiv C\] done
clear
View Solution play_arrow
-
question_answer6)
In the molecule \[CH\equiv C-CH=C{{H}_{2}}\], the hybridisation of \[C-C\] bond is [Orissa JEE 2005]
A)
\[s{{p}^{2}}-sp\] done
clear
B)
\[s{{p}^{3}}-s{{p}^{3}}\] done
clear
C)
\[s{{p}^{2}}-s{{p}^{2}}\] done
clear
D)
\[s{{p}^{3}}-sp\] done
clear
View Solution play_arrow
-
question_answer7)
The product formed when acetylene is passed through red hot tube is [BHU 1989; RPMT 2003]
A)
Benzene done
clear
B)
Cyclohexane done
clear
C)
Neoprene done
clear
D)
Ethane done
clear
View Solution play_arrow
-
question_answer8)
Acetylenic hydrogens are acidic because [CBSE PMT 1989; Pb. PMT 1999]
A)
Sigma electron density of C-H bond in acetylene is nearer to carbon, which has 50% s-character done
clear
B)
Acetylene has only one hydrogen on each carbon done
clear
C)
Acetylene contains least number of hydrogens among the possible hydrocarbons having two carbons done
clear
D)
Acetylene belongs to the class of alkynes with molecular formula \[{{C}_{n}}{{H}_{2n-2}}\] done
clear
View Solution play_arrow
-
question_answer9)
Which is the most suitable reagent among the following to distinguish compound (iii) from rest of the compounds (i) \[C{{H}_{3}}-C\equiv C-C{{H}_{3}}\] (ii) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] (iii) \[C{{H}_{3}}-C{{H}_{2}}-C\equiv CH\] (iv) \[C{{H}_{3}}-CH=C{{H}_{2}}\] [CBSE PMT 1989]
A)
Bromine in carbon tetrachloride done
clear
B)
Bromine in acetic acid done
clear
C)
Alkaline \[KMn{{O}_{4}}\] done
clear
D)
Ammoniacal silver nitrate reagent done
clear
View Solution play_arrow
-
question_answer10)
A hydrocarbon of formula \[{{C}_{6}}{{H}_{10}}\] absorbs only one molecule of \[{{H}_{2}}\] upon catalytic hydrogenation. Upon ozonolysis, the hydrocarbon yields \[\overset{H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{O=C-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}}}\,}}\,-\overset{\,\,\,\,H}{\mathop{\overset{\,\,\,\,\,\,|}{\mathop{C{{H}_{2}}-C=O}}\,}}\,\] The hydrocarbon is [MP PMT 1986]
A)
Cyclohexane done
clear
B)
Benzene done
clear
C)
Cyclohexene done
clear
D)
Cyclobutane done
clear
View Solution play_arrow
-
question_answer11)
Poisonous gas 'Lewissite' is obtained by the reaction of [MP PMT 2003]
A)
\[CH\equiv CH\] and \[AsC{{l}_{3}}\] done
clear
B)
\[C{{H}_{2}}=C{{H}_{2}}\] and \[AsC{{l}_{3}}\] done
clear
C)
\[CH\equiv CH\] and \[{{S}_{2}}C{{l}_{2}}\] done
clear
D)
\[C{{H}_{2}}=C{{H}_{2}}\] and \[NOCl\] done
clear
View Solution play_arrow
-
question_answer12)
Products of the following reaction \[C{{H}_{3}}C\equiv \,C\,C{{H}_{2}}C{{H}_{3}}\overset{(1)\ \ {{O}_{3}}}{\mathop{\xrightarrow[(2)\ Hydrolysis]{}}}\,\]....... are [CBSE PMT 2005]
A)
\[C{{H}_{3}}CHO+C{{H}_{3}}C{{H}_{2}}CHO\] done
clear
B)
\[C{{H}_{3}}COOH+C{{H}_{3}}C{{H}_{2}}CHO\] done
clear
C)
\[C{{H}_{3}}COOH+HOOCC{{H}_{2}}C{{H}_{3}}\] done
clear
D)
\[C{{H}_{3}}COOH+C{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer13)
By coaltar distillation, which is not obtained [SCRA 1990; MP PMT 1986]
A)
Light oil done
clear
B)
Middle oil done
clear
C)
Heavy oil done
clear
D)
Mobil oil done
clear
View Solution play_arrow
-
question_answer14)
Hydrocarbon containing following bond is most reactive [AIIMS 1987]
A)
\[C\equiv C\] done
clear
B)
C = C done
clear
C)
C - C done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer15)
The shapes of methane, ethene and ethyne molecules are, respectively
A)
Tetrahedral, planar and linear done
clear
B)
Tetrahedral, linear and planar done
clear
C)
Pyramidal, planar and linear done
clear
D)
Tetrahedral, pyramidal and planar done
clear
View Solution play_arrow
-
question_answer16)
To synthesize the unsymmetrical alkyne \[C{{H}_{3}}-C\equiv C-C{{H}_{2}}-C{{H}_{3}}\] the reagents needed would be
A)
Ethene, iodoethane, iodomethane and potassium hydroxide done
clear
B)
Acetaldehyde, 1-bromopropane and conc. \[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
1, 2-dichloroethane, 1-propanol and alcoholic potassium hydroxide done
clear
D)
Ethyne, iodomethane, iodoethane and sodamide done
clear
View Solution play_arrow
-
question_answer17)
When propyne is treated with dilute \[{{H}_{2}}S{{O}_{4}}\] and \[HgS{{O}_{4}}\], the major product is [Kurukshetra CEE 2002]
A)
Propanal done
clear
B)
Propanol done
clear
C)
Propyl hydrogen sulphate done
clear
D)
Propanone done
clear
View Solution play_arrow
-
question_answer18)
Which of the following will be the final product when \[{{C}_{2}}{{H}_{2}}\] reacts with HCl [DPMT 1984; AFMC 1982; Bihar MEE 1982]
A)
\[\underset{CHCl}{\mathop{\overset{CH\,\,\,\,\,}{\mathop{|\,|\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
B)
\[\underset{CHC{{l}_{2}}}{\mathop{\overset{C{{H}_{3}}\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
C)
\[\underset{CHCl}{\mathop{\overset{CHCl}{\mathop{|\,|\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer19)
What is the end product of the following sequences of operations \[Ca{{C}_{2}}\xrightarrow{{{H}_{2}}O}A\underset{H{{g}^{++}}}{\mathop{\xrightarrow{\text{dil}\text{. }{{H}_{2}}S{{O}_{4}}}}}\,B\underset{{{H}_{2}}}{\mathop{\xrightarrow{Ni}}}\,C\] [CPMT 1978; MP PMT 1996]
A)
Methyl alcohol done
clear
B)
Acetaldehyde done
clear
C)
\[{{C}_{2}}{{H}_{5}}OH\] done
clear
D)
\[{{C}_{2}}{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer20)
\[R-C{{H}_{2}}-CC{{l}_{2}}-R\xrightarrow{\text{Reagent}}R-C\equiv C-R\] The reagent is [CBSE PMT 1989; MP PET 1995]
A)
Na done
clear
B)
\[HCl\text{ and }{{H}_{2}}O\] done
clear
C)
\[KOH\text{ in }{{C}_{2}}{{H}_{5}}OH\] done
clear
D)
Zn done
clear
View Solution play_arrow
-
question_answer21)
Acetylene can be prepared from [CPMT 1988]
A)
Potassium fumarate done
clear
B)
Calcium carbide done
clear
C)
Ethylene bromide done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer22)
Acetylene is obtained by the electrolysis of [BHU 1986]
A)
Sodium succinate done
clear
B)
Potassium fumarate done
clear
C)
Both A and B done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer23)
The compound \[{{C}_{3}}{{H}_{4}}\] has a triple bond, which is indicated by its reaction with [MP PMT 1999]
A)
Bromine water done
clear
B)
Bayer's reagent done
clear
C)
Fehling solution done
clear
D)
Ammonical silver nitrate done
clear
View Solution play_arrow
-
question_answer24)
\[CH\equiv CH\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{{{H}_{2}}O/H{{g}^{2+}}}}}\,X\xrightarrow{LiAl{{H}_{4}}}Y\xrightarrow{{{P}_{4}}/B{{r}_{2}}}Z\]Here Z is [JIPMER 2002]
A)
Ethylene bromide done
clear
B)
Ethanol done
clear
C)
Ethyl bromide done
clear
D)
Ethylidene bromide done
clear
View Solution play_arrow
-
question_answer25)
\[CH\equiv CH\underset{\text{Pressure}}{\mathop{\xrightarrow{Ni{{(CN)}_{2}}}X}}\,\] . Here X in the reaction [JIPMER 2002]
A)
Benzene done
clear
B)
Ethane done
clear
C)
Cycloctatetraene done
clear
D)
Cyclohexane done
clear
View Solution play_arrow
-
question_answer26)
A salt producing hydrocarbon among these compounds is [KCET (Engg.) 2002]
A)
Ethane done
clear
B)
Methane done
clear
C)
Ethene done
clear
D)
Ethyne done
clear
View Solution play_arrow
-
question_answer27)
An unknown compound A has a molecular formula \[{{C}_{4}}{{H}_{6}}.\] When A is treated with an excess of \[B{{r}_{2}}\] a new substance B with formula \[{{C}_{4}}{{H}_{6}}B{{r}_{4}}\] is formed. A forms a white precipitate with ammoniacal silver nitrate solution. A may be [MP PET/PMT 1998]
A)
Butyne-1 done
clear
B)
Butyne-2 done
clear
C)
Butene-1 done
clear
D)
Butene-2 done
clear
View Solution play_arrow
-
question_answer28)
Which of the following reacts with sodium with the elimination of hydrogen [BHU 1983]
A)
\[C{{H}_{4}}\] done
clear
B)
\[{{C}_{2}}{{H}_{6}}\] done
clear
C)
\[{{C}_{2}}{{H}_{4}}\] done
clear
D)
\[{{C}_{2}}{{H}_{2}}\] done
clear
View Solution play_arrow
-
question_answer29)
Acetylene gives [CPMT 1985]
A)
White precipitate with \[AgN{{O}_{3}}\] and red precipitate with \[C{{u}_{2}}C{{l}_{2}}\] done
clear
B)
White precipitate with \[C{{u}_{2}}C{{l}_{2}}\] and red precipitate with \[AgN{{O}_{3}}\] done
clear
C)
White precipitate with both the reagents done
clear
D)
Red precipitate with both the reagents done
clear
View Solution play_arrow
-
question_answer30)
The bond length between \[s{{p}^{3}}\] hybridised carbon atom and other carbon atom is minimum in [CBSE PMT 1996; Pb. PMT 1999]
A)
Propane done
clear
B)
Butane done
clear
C)
Propene done
clear
D)
Propyne done
clear
View Solution play_arrow
-
question_answer31)
The C - H bond length is minimum in the bond formed by
A)
sp - s overlapping (as in alkynes) done
clear
B)
\[s{{p}^{2}}-s\] overlapping (as in alkenes) done
clear
C)
\[s{{p}^{3}}-s\] overlapping (as in alkanes) done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer32)
Which of the C - C bond is strongest
A)
Formed by \[s{{p}^{3}}-s{{p}^{3}}\] hybridised carbon atoms (as in alkanes) done
clear
B)
Formed by \[s{{p}^{2}}-s{{p}^{2}}\] hybridised carbon atoms (as in alkenes) done
clear
C)
Formed by \[sp-sp\] hybridised carbon atoms (as in alkynes) done
clear
D)
All are equal done
clear
View Solution play_arrow
-
question_answer33)
Which of the following pairs has the same bond angle
A)
Ethane and ethylene done
clear
B)
Ethylene and acetylene done
clear
C)
Ethylene and benzene done
clear
D)
Acetylene and benzene done
clear
View Solution play_arrow
-
question_answer34)
The product(s) obtained via oxymercuration \[(HgS{{O}_{4}}+{{H}_{2}}S{{O}_{4}})\] of 1-butyne would be [IIT-JEE 1999]
A)
\[\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C-C{{H}_{3}}}}\,}}\,\] done
clear
B)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-CHO\] done
clear
C)
\[C{{H}_{3}}-C{{H}_{2}}-CHO+HCHO\] done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}COOH+HCOOH\] done
clear
View Solution play_arrow
-
question_answer35)
A compound is treated with \[NaN{{H}_{2}}\] to give sodium salt. Identify the compound [AFMC 1998]
A)
\[{{C}_{2}}{{H}_{2}}\] done
clear
B)
\[{{C}_{6}}{{H}_{6}}\] done
clear
C)
\[{{C}_{2}}{{H}_{6}}\] done
clear
D)
\[{{C}_{2}}{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer36)
A gas decolourises bromine in \[CC{{l}_{4}}\] and forms a precipitate with ammoniacal silver nitrate. The gas is [EAMCET 1998]
A)
\[{{C}_{2}}{{H}_{2}}\] done
clear
B)
\[{{C}_{2}}{{H}_{4}}\] done
clear
C)
\[{{C}_{2}}{{H}_{6}}\] done
clear
D)
\[C{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer37)
Among the following compounds which have more than one type of hybridisation for carbon atom (i) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] (ii) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] (iii) \[C{{H}_{2}}=CH-C\equiv CH\] (iv) \[H-C\equiv C-H\] [EAMCET 1998]
A)
(ii) and (iii) done
clear
B)
(ii) done
clear
C)
(iii) and (iv) done
clear
D)
(iv) done
clear
View Solution play_arrow
-
question_answer38)
The homologue of ethyne is [EAMCET 1998]
A)
\[{{C}_{2}}{{H}_{4}}\] done
clear
B)
\[{{C}_{2}}{{H}_{6}}\] done
clear
C)
\[{{C}_{3}}{{H}_{8}}\] done
clear
D)
\[{{C}_{3}}{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer39)
When acetylene reacts with HCl in the presence of \[HgC{{l}_{2}}\], the product is [MNR 1985; MP PET 1996; UPSEAT 2000]
A)
Methyl chloride done
clear
B)
Dichloroethane done
clear
C)
Vinyl chloride done
clear
D)
Ethylidine chloride done
clear
View Solution play_arrow
-
question_answer40)
When propyne reacts with aqueous \[{{H}_{2}}S{{O}_{4}}\] in the presence of \[{{C}_{2}}{{H}_{4}}\], the major product is [IIT-JEE 1983; AFMC 1991; KCET 1993]
A)
Propanal done
clear
B)
Propyl hydrogen sulphate done
clear
C)
Acetone done
clear
D)
Propanol done
clear
View Solution play_arrow
-
question_answer41)
Propyne on polymerisation gives [CPMT 1999, 2002]
A)
Mesitylene done
clear
B)
Benzene done
clear
C)
Ethyl benzene done
clear
D)
Propyl benzene done
clear
View Solution play_arrow
-
question_answer42)
When treated with ammoniacal cuprous chloride, which one among the following forms copper derivative [CBSE PMT 1989; MP PMT 1993]
A)
\[{{C}_{2}}{{H}_{6}}\] done
clear
B)
\[{{C}_{2}}{{H}_{4}}\] done
clear
C)
\[{{C}_{2}}{{H}_{2}}\] done
clear
D)
\[{{C}_{6}}{{H}_{6}}\] done
clear
View Solution play_arrow
-
question_answer43)
Which of the following catalyst is used in the polymerisation of \[CH\equiv CH\] to \[{{C}_{6}}{{H}_{6}}\] [CPMT 1999]
A)
\[AlC{{l}_{3}}\] done
clear
B)
\[HgS{{O}_{4}}\] done
clear
C)
\[NbC{{l}_{3}}\] done
clear
D)
HCl done
clear
View Solution play_arrow
-
question_answer44)
\[KMn{{O}_{4}}\] will oxidise acetylene to [CPMT 1999]
A)
Ethylene glycol done
clear
B)
Ethyl alcohol done
clear
C)
Oxalic acid done
clear
D)
Acetic acid done
clear
View Solution play_arrow
-
question_answer45)
Ethyne on reaction with dil. \[{{H}_{2}}S{{O}_{4}}\] and \[Hg(\text{II})\] gives
A)
Ethanol done
clear
B)
Ethanal done
clear
C)
Methoxymethane done
clear
D)
Ethyl hydrogen sulphate done
clear
View Solution play_arrow
-
question_answer46)
Which of the following is used to distinguish ethylene and acetylene [MP PET 2000; KCET 2000; JIPMER 2000; CPMT 1977; NCERT 1973]
A)
Alkaline \[KMn{{O}_{4}}\] done
clear
B)
Bromine water done
clear
C)
Ammoniacal cuprous chloride done
clear
D)
Conc. \[{{H}_{2}}S{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer47)
The distinguishing test for triple bond containing acidic hydrogen is [JIPMER 2000]
A)
\[Ag{{(N{{H}_{3}})}_{2}}^{+}\] done
clear
B)
\[B{{r}_{2}}\]in \[CC{{l}_{4}}\] done
clear
C)
Alkaline\[KMn{{O}_{4}}\] done
clear
D)
\[AlC{{l}_{3}}\] done
clear
View Solution play_arrow
-
question_answer48)
If acetylene is passed through an electric arc in the atmosphere of nitrogen, the compound formed is [RPMT 1999]
A)
HCN done
clear
B)
Pyrrole done
clear
C)
Pyrazole done
clear
D)
Pyridine done
clear
View Solution play_arrow
-
question_answer49)
Ozonolysis of acetylene gives [RPMT 1999]
A)
Glycol done
clear
B)
Glyoxal,formic acid done
clear
C)
Formaldehyde done
clear
D)
None done
clear
View Solution play_arrow
-
question_answer50)
The bond length between the hybridised carbon atom and other carbon atom is minimum in [Pb. PMT 2000]
A)
Butane done
clear
B)
Propyne done
clear
C)
Propene done
clear
D)
Propane done
clear
View Solution play_arrow
-
question_answer51)
The reaction of propene with HOCl proceeds via the addition of [IIT-JEE (Screening) 2001]
A)
\[{{H}^{+}}\]in the first step done
clear
B)
\[C{{l}^{+}}\]in the first step done
clear
C)
\[O{{H}^{-}}\]in the first step done
clear
D)
\[C{{l}^{+}}\]and \[O{{H}^{-}}\]in a single step done
clear
View Solution play_arrow
-
question_answer52)
Acetylene reacts with ammonical \[AgN{{O}_{3}}\] forming [MH CET 1999; CPMT 1984, 86; MP PMT 1997]
A)
Silver acetylene done
clear
B)
Silver acetate done
clear
C)
Metal silver done
clear
D)
Silver mirror done
clear
View Solution play_arrow
-
question_answer53)
Ethylidine dichloride can be prepared by the reaction of HCl and [MH CET 1999]
A)
\[{{C}_{2}}{{H}_{4}}\] done
clear
B)
\[{{C}_{2}}{{H}_{2}}\] done
clear
C)
\[{{C}_{2}}{{H}_{5}}\] done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer54)
Which of the following order of reagent is chosen to prepare 1, 3-butadiene from \[{{C}_{2}}{{H}_{2}}\] [RPET 2000]
A)
\[CuCl/N{{H}_{4}}Cl\] and \[{{H}_{2}}/Pd(BaS{{O}_{4}})\] done
clear
B)
\[N{{H}_{4}}Cl/CuCl\] and \[{{H}_{2}}/Pd(BaS{{O}_{4}})\] done
clear
C)
\[{{H}_{2}}/Pd(BaS{{O}_{4}})\] and \[CuCl/N{{H}_{4}}Cl\] done
clear
D)
\[{{H}_{2}}/Pd(BaS{{O}_{4}})\] and \[N{{H}_{4}}Cl/CuCl\] done
clear
View Solution play_arrow
-
question_answer55)
Benzene is the polymer of [RPET 1999; Bihar MEE 1999]
A)
Methane done
clear
B)
Ethane done
clear
C)
Ethylene done
clear
D)
Ethyne done
clear
View Solution play_arrow
-
question_answer56)
\[\underset{CH}{\mathop{\overset{CH}{\mathop{|||}}\,}}\,\]reacts with acetic acid in presence of Hg2+ to give [BHU 2005]
A)
\[\underset{CH{{(C{{H}_{3}}COO)}_{2}}}{\mathop{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
B)
\[\underset{CH{{(C{{H}_{3}}COO)}_{2}}}{\mathop{\overset{CH{{(C{{H}_{3}}COO)}_{2}}}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
C)
\[\underset{C{{H}_{2}}(C{{H}_{3}}COO)}{\mathop{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer57)
Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of [CPMT 1985]
A)
Air done
clear
B)
\[{{N}_{2}}\] done
clear
C)
\[{{H}_{2}}\] done
clear
D)
\[C{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer58)
When acetylene is passed into dilute sulphuric acid containing \[H{{g}^{2+}}\] ions, the product formed is [DPMT 1996; Roorkee 1995; BHU 1998; KCET 1999; MP PET 1985, 86; DCE 1999; DPMT 1999, 2002; CPMT 1975, 82, 83, 90; MP PMT 1994, 97; CBSE PMT 1999; AIIMS 2002; CBSE PMT 1999; KCET (Med.) 1999, JIPMER 1999]
A)
Acetone done
clear
B)
Acetic acid done
clear
C)
Acetaldehyde done
clear
D)
Formaldehyde done
clear
View Solution play_arrow
-
question_answer59)
Which of the following has acidic hydrogen [IIT-JEE 1985, 89; CPMT 1986; Bihar MEE 1997; RPET 1999; AFMC 1999]
A)
Ethyne done
clear
B)
Ethene done
clear
C)
Ethane done
clear
D)
Benzene done
clear
View Solution play_arrow
-
question_answer60)
Xylenes on oxidation with acidic \[KMn{{O}_{4}}\]gives [JIPMER 2000]
A)
Terphthalic acid done
clear
B)
Phthalic acid done
clear
C)
Isophthalic acid done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer61)
The structure of the product(Z) in the reactions given below \[HC\equiv CH\underset{{{H}^{+}}}{\mathop{\xrightarrow{NaN{{H}_{2}},C{{H}_{3}}COC{{H}_{3}}}}}\,X\underset{{{H}_{2}}O}{\mathop{\xrightarrow{H{{g}^{2+}},{{H}_{3}}{{O}^{+}}}}}\,Z\] is [Roorkee 2000]
A)
\[\begin{array}{*{35}{l}} C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}OH \\ \end{array}\] done
clear
B)
\[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\overset{C{{H}_{3}}}{\mathop{\overset{\,\,\,|\,\,\,\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-C{{H}_{2}}OH\] done
clear
C)
\[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,\,\,}{\mathop{\underset{OH}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C\,-\,}}\,}}\,}}\,}}\,C{{H}_{3}}\] done
clear
D)
\[C{{H}_{3}}-CHOH-\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,}{\mathop{CH}}\,-}}\,CHO\] done
clear
View Solution play_arrow
-
question_answer62)
Carbon-carbon bond length is minimum in [CBSE PMT 1988, 91; MNR 1984; CPMT 1989; RPMT 1997; Pb. PMT 2001]
A)
Ethane done
clear
B)
Ethene done
clear
C)
Ethyne done
clear
D)
Benzene done
clear
E)
Ethanol done
clear
View Solution play_arrow
-
question_answer63)
Triple bond of ethyne is made of or Cylindrical shape of an alkyne is due to [EAMCET 1978; NCERT 1979; CBSE PMT 1997; Manipal MEE 1995; Bihar MEE 1996]
A)
Three \[\sigma -\text{bonds}\] done
clear
B)
Three \[\pi -\text{bonds}\] done
clear
C)
Two \[\sigma \] and one \[\pi -\text{bond}\] done
clear
D)
Two \[\pi \] and one \[\sigma -\text{bond}\] done
clear
View Solution play_arrow
-
question_answer64)
An organic compound has a triple bond and not double bond. It can be tested by [MP PMT 2000, 03]
A)
Bromine water done
clear
B)
Bayer's reagent done
clear
C)
Fehling solution done
clear
D)
Ammonical silver nitrate done
clear
View Solution play_arrow
-
question_answer65)
Which of these will not react with acetylene [AIEEE 2002; DCE 2002]
A)
NaOH done
clear
B)
Ammonical \[AgN{{O}_{3}}\] done
clear
C)
Na done
clear
D)
HCl done
clear
View Solution play_arrow
-
question_answer66)
What is the product when acetylene reacts with hypochlorous acid [RPMT 2002; AIEEE 2002]
A)
\[C{{H}_{3}}COCl\] done
clear
B)
\[ClC{{H}_{2}}CHO\] done
clear
C)
\[C{{l}_{2}}CHCHO\] done
clear
D)
\[ClCHCOOH\] done
clear
View Solution play_arrow
-
question_answer67)
The alkene \[{{C}_{6}}{{H}_{10}}\] producing \[OHC-{{(C{{H}_{2}})}_{4}}-CHO\] on ozonolysis is [Roorkee 1999]
A)
Hexene-1 done
clear
B)
Hexene-3 done
clear
C)
Cyclohexene done
clear
D)
1-methylcyclohexene-1 done
clear
View Solution play_arrow
-
question_answer68)
The number of moles of proton which can be easily given by butyne-1(1 mole) is [MP PMT 2000]
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
6 done
clear
View Solution play_arrow
-
question_answer69)
Which will undergo reaction with ammoniacal \[AgN{{O}_{3}}\] [DPMT 1996]
A)
\[\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}>CH-C{{H}_{2}}-CH=CH-C{{H}_{3}}\] done
clear
B)
\[C{{H}_{3}}-CH=CH-C\equiv CH\] done
clear
C)
\[C{{H}_{3}}-C{{H}_{2}}-CH=CH-C{{H}_{2}}-C{{H}_{3}}\] done
clear
D)
\[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{3}}\] done
clear
E)
None done
clear
View Solution play_arrow
-
question_answer70)
Acetylene gas when passed through the 20% \[{{H}_{2}}S{{O}_{4}}\text{ at }{{80}^{o}}C\] gives acetaldehyde. The catalyst required for this conversion is [CPMT 1983]
A)
Anhydrous \[AlC{{l}_{3}}\] done
clear
B)
\[HgS{{O}_{4}}\] done
clear
C)
Pd done
clear
D)
Pt done
clear
View Solution play_arrow
-
question_answer71)
Which of the following reactions will yield 2, 2-dibromopropane [MNR 1993; UPSEAT 2001]
A)
\[HC\equiv CH+2HBr\to \] done
clear
B)
\[C{{H}_{3}}C\equiv CH+2HBr\to \] done
clear
C)
\[C{{H}_{3}}CH=C{{H}_{2}}+HBr\to \] done
clear
D)
\[C{{H}_{3}}CH=CHBr+HBr\to \] done
clear
View Solution play_arrow
-
question_answer72)
Which of the following does not give white precipitate with ammoniacal \[AgN{{O}_{3}}\]
A)
\[CH\equiv CH\] done
clear
B)
\[C{{H}_{3}}-C\equiv CH\] done
clear
C)
\[C{{H}_{3}}-C\equiv C-C{{H}_{3}}\] done
clear
D)
\[\underset{Cl\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}-C\equiv CH}}\,}}\,\] done
clear
View Solution play_arrow
-
question_answer73)
\[\underset{CH}{\mathop{\overset{CH}{\mathop{|\,|\,|}}\,}}\,\xrightarrow{{{O}_{3}}/NaOH}X\xrightarrow{Zn/C{{H}_{3}}COOH}Y\] ?Y? is [AIIMS 1988]
A)
\[\underset{C{{H}_{2}}OH}{\mathop{\overset{C{{H}_{2}}OH}{\mathop{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}}\,\] done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}OH\] done
clear
C)
\[C{{H}_{3}}COOH\] done
clear
D)
\[C{{H}_{3}}OH\] done
clear
View Solution play_arrow
-
question_answer74)
Which is represented by the formula \[{{C}_{n}}{{H}_{2n-2}}\] [CPMT 1975, 76; EAMCET 1979; MP PET 2003
A)
Alkane done
clear
B)
Alkyne done
clear
C)
Alkene done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer75)
What is the major product of the following reaction \[C{{H}_{3}}C\equiv C-C{{H}_{2}}-C{{H}_{3}}\xrightarrow{1\,\,\text{mole}\,\,\text{of}\,C{{l}_{2}}}\] [Kerala (Med.) 2003]
A)
\[\begin{matrix} CI\,\,\, \\ C{{H}_{3}} \\ \end{matrix}>C=C<\begin{matrix} Cl\,\,\,\,\,\,\,\,\,\,\, \\ C{{H}_{2}}C{{H}_{3}} \\ \end{matrix}\] done
clear
B)
\[C{{H}_{3}}-C{{H}_{2}}-\underset{\,\,Cl}{\overset{\,Cl}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-C{{H}_{2}}C{{H}_{3}}\] done
clear
C)
\[\begin{matrix} Cl\,\,\, \\ C{{H}_{3}} \\ \end{matrix}>C=C<\begin{matrix} C{{H}_{2}}C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\, \\ Cl\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\ \end{matrix}\] done
clear
D)
\[C{{H}_{3}}-\underset{\,Cl}{\overset{\,Cl}{\mathop{\underset{|}{\overset{|\,}{\mathop{C}}}\,}}}\,-\underset{\,Cl}{\overset{\,Cl}{\mathop{\underset{|\,}{\overset{\,|\,\,}{\mathop{C\,}}}\,}}}\,-C{{H}_{2}}C{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer76)
A compound \[{{C}_{5}}{{H}_{8}}\] which give white ppt. with ammonical \[AgN{{O}_{3}}\]. A give \[{{(C{{H}_{3}})}_{2}}CHCOOH\] with hot alcoholic KOH then compound is [RPMT 2002]
A)
\[C{{H}_{3}}C{{H}_{2}}-C{{H}_{2}}-CH=C{{H}_{2}}\] done
clear
B)
\[C{{H}_{3}}-C{{H}_{2}}-C\equiv CH\] done
clear
C)
\[{{(C{{H}_{3}})}_{2}}CH-C\equiv CH\] done
clear
D)
\[C{{H}_{2}}=CH-C{{H}_{2}}-CH=C{{H}_{2}}\] done
clear
View Solution play_arrow
-
question_answer77)
1, 2-dibromoethane when heated with alcoholic potash gives [Kerala PMT 2004]
A)
Ethane done
clear
B)
Acetylene done
clear
C)
Ethylene done
clear
D)
Methane done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer78)
Which of the following is not a member of homologous series [RPMT 2002]
A)
Ethene done
clear
B)
1-butene done
clear
C)
2-butene done
clear
D)
2-butyne done
clear
View Solution play_arrow
-
question_answer79)
The compound formed as a result of potassium permanganate oxidation of ethylbenzene is [MP PET/PMT 1998]
A)
Benzoic acid done
clear
B)
Benzyl alcohol done
clear
C)
Benzophenone done
clear
D)
Acetophenone done
clear
View Solution play_arrow
-
question_answer80)
What is the product when 2-butyne is treated with liquid \[N{{H}_{3}}\]in presence of lithium [Orissa JEE 2003]
A)
n-butane done
clear
B)
cis-2-butene done
clear
C)
trans-2-butene done
clear
D)
1-butene done
clear
View Solution play_arrow
-
question_answer81)
Distinction in pentene-1 and pentyne-1 is done by [CPMT 1996]
A)
\[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}}\] done
clear
B)
Conc. \[{{H}_{2}}S{{O}_{4}}\] done
clear
C)
HCl done
clear
D)
\[B{{r}_{2}}\] done
clear
View Solution play_arrow
-
question_answer82)
A mixture of ethane, ethene and ethyne is passed through ammoniacal \[AgN{{O}_{3}}\] solution. The gases which remain unreacted are [CPMT 1990]
A)
Ethane and ethene done
clear
B)
Ethane and ethyne done
clear
C)
Ethene and ethyne done
clear
D)
Ethane only done
clear
View Solution play_arrow
-
question_answer83)
In its reaction with silver nitrate acetylene shows [MP PET 1999]
A)
Oxidising property done
clear
B)
Reducing property done
clear
C)
Basic property done
clear
D)
Acidic property done
clear
View Solution play_arrow
-
question_answer84)
Simplest alkyne is represented by [CPMT 1974]
A)
CH done
clear
B)
\[C{{H}_{2}}\] done
clear
C)
\[{{C}_{2}}{{H}_{2}}\] done
clear
D)
\[{{C}_{2}}{{H}_{4}}\] done
clear
View Solution play_arrow
-
question_answer85)
Which of the following bonds is most acidic
A)
= C - H done
clear
B)
\[-C-H\] done
clear
C)
\[\equiv C-H\] done
clear
D)
All are equally acidic done
clear
View Solution play_arrow
-
question_answer86)
The hybridisation in methane, ethene and Ethyne respectively is [CPMT 2003]
A)
sp3, sp2 and sp done
clear
B)
sp3, sp, sp2 done
clear
C)
sp2, sp3 and sp done
clear
D)
sp3, sp2, sp done
clear
View Solution play_arrow
-
question_answer87)
Number of acidic hydrogen atoms in butyne-1 are [MP PET 1986]
A)
2 done
clear
B)
3 done
clear
C)
1 done
clear
D)
4 done
clear
View Solution play_arrow
-
question_answer88)
Which of the following shows linear structure [CPMT 2003]
A)
Ethane done
clear
B)
Ethene done
clear
C)
Acetylene done
clear
D)
\[CC{{l}_{4}}\] done
clear
View Solution play_arrow
-
question_answer89)
Calcium carbide on reacting with water gives [CBSE PMT 1991; MP PMT 1993, 94; RPMT 2002; J & K 2005]
A)
Methane done
clear
B)
Ethane done
clear
C)
Ethene done
clear
D)
Acetylene done
clear
View Solution play_arrow
-
question_answer90)
Addition of HCN to ethyne in presence of \[Ba{{(CN)}_{2}}\] as catalyst gives [AFMC 1991]
A)
1, 1-dicyano ethane done
clear
B)
Ethyl cyanide done
clear
C)
Vinyl cyanide done
clear
D)
Divinyl cyanide done
clear
View Solution play_arrow
-
question_answer91)
Which compound will react with an aqueous solution of \[Ag(N{{H}_{3}})_{2}^{+}O{{H}^{-}}\] [DPMT 2000]
A)
\[C{{H}_{2}}=C{{H}_{2}}\] done
clear
B)
\[C{{H}_{3}}-C{{H}_{3}}\] done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}C\equiv CH\] done
clear
D)
\[C{{H}_{3}}-C\equiv C-C{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer92)
Which of the following give \[{{H}_{2}}\]gas with Na [RPMT 2002]
A)
\[C{{H}_{4}}\] done
clear
B)
\[{{C}_{2}}{{H}_{6}}\] done
clear
C)
\[{{C}_{2}}{{H}_{4}}\] done
clear
D)
\[{{C}_{2}}{{H}_{2}}\] done
clear
View Solution play_arrow
-
question_answer93)
\[C{{H}_{3}}-C\equiv CH\underset{Zn/{{H}_{2}}{{O}_{2}}}{\mathop{\xrightarrow{{{O}_{3}}}}}\,\text{Product}\].Product in above reaction is [RPMT 2003]
A)
\[C{{H}_{3}}COOH\] done
clear
B)
\[HCOOH\] done
clear
C)
Both A and B done
clear
D)
\[C{{H}_{3}}CHO+HCHO\] done
clear
View Solution play_arrow
-
question_answer94)
The number of \[\pi -\text{bonds}\] in the product formed by passing acetylene through dilute sulphuric acid containing mercuric sulphate is [EAMCET 1997]
A)
Zero done
clear
B)
One done
clear
C)
Two done
clear
D)
Three done
clear
View Solution play_arrow
-
question_answer95)
Which of the following is weakly acidic
A)
\[C{{H}_{2}}=C{{H}_{2}}\] done
clear
B)
\[{{C}_{6}}{{H}_{6}}\] done
clear
C)
\[C{{H}_{3}}-C\equiv CH\] done
clear
D)
\[C{{H}_{3}}-C\equiv C-C{{H}_{ 3}}\] done
clear
View Solution play_arrow
-
question_answer96)
Which of the following reactions is shown by alkynes [AMU 1984; RPMT 2000]
A)
Addition done
clear
B)
Substitution done
clear
C)
Polymerization done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer97)
Shortest C-C bond length is present in [BVP 2004]
A)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{3}}\] done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done
clear
C)
\[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] done
clear
D)
\[CH\equiv C-C\equiv CH\] done
clear
View Solution play_arrow
-
question_answer98)
Acetylene can be obtained by the reaction [MH CET 2004]
A)
\[HCOOK\xrightarrow{\text{electrolysis}}\] done
clear
B)
\[CH{{I}_{3}}+6Ag+CH{{I}_{3}}\xrightarrow{\Delta }\] done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}OH\underset{443{}^\circ C}{\mathop{\xrightarrow{\text{Conc}\text{. }{{H}_{2}}S{{O}_{4}}}}}\,\] done
clear
D)
\[B{{e}_{2}}C+{{H}_{2}}O\to \] done
clear
View Solution play_arrow
-
question_answer99)
Which of the following used for the conversion of 2-hexyne into trans-2-hexane [IIT JEE (Screening) 2004]
A)
\[{{H}_{2}}/Pd/BaS{{O}_{4}}\] done
clear
B)
\[{{H}_{2}},Pt{{O}_{2}}\] done
clear
C)
\[NaB{{H}_{4}}\] done
clear
D)
\[Li-N{{H}_{3}}/{{C}_{2}}{{H}_{5}}OH\] done
clear
View Solution play_arrow
-
question_answer100)
In which of the following, the bond length between hybridized carbon atom and other carbon atom is minimum [MH CET 2003]
A)
Propyne done
clear
B)
Propene done
clear
C)
Butane done
clear
D)
Propane done
clear
View Solution play_arrow
-
question_answer101)
What happens when a mixture of acetylene an hydrogen is passed over heated Lindlar?s catalyst [Kerala PMT 2004; AIIMS 1987]
A)
Ethane and water are formed done
clear
B)
Ethylene is formed done
clear
C)
Acetylene and ethane are formed done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer102)
In acetylene molecule, the two carbon atoms are linked by [KCET 2004]
A)
One sigma bond and two pi bonds done
clear
B)
Two sigma bonds and one pi bond done
clear
C)
Three sigma bonds done
clear
D)
Three pi bonds done
clear
View Solution play_arrow
-
question_answer103)
Which reacts with ammoniacal \[AgN{{O}_{3}}\] [Orissa JEE 2005]
A)
Propyne done
clear
B)
2-butyne done
clear
C)
1,3-butadiene done
clear
D)
Pentene done
clear
View Solution play_arrow
-
question_answer104)
\[CH\equiv CH\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{HgS{{O}_{4}}}}}\,\underset{{{H}_{2}}O}{\mathop{\xrightarrow{C{{H}_{3}}MgBr}}}\,\xrightarrow{P/B{{r}_{2}}}\] [DPMT 2005]
A)
\[C{{H}_{3}}CH(Br)C{{H}_{3}}\] done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\] done
clear
C)
\[C{{H}_{2}}=CH-Br\] done
clear
D)
\[BrCH=CH-C{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer105)
Carbide, which react with water to give propyne is [Kerala CET 2005]
A)
\[Ca{{C}_{2}}\] done
clear
B)
\[SiC\] done
clear
C)
\[M{{g}_{2}}{{C}_{3}}\] done
clear
D)
\[A{{l}_{4}}{{C}_{3}}\] done
clear
E)
\[B{{e}_{2}}C\] done
clear
View Solution play_arrow