995 + Interview Questions in HYDROCARBONS IN GENERAL AWARENESS Page 16 InterviewSolution

751.	Consider the following reaction The reactive intermediate invovled in this reaction isA. cArbanionB. CarbocationC. Free radical anionD. Free radical cation.
Answer» Correct Answer - C

Discussion

752.	Assertion `:` Cyclohexane floats over water. Reason`:` Cyclohexane always has boat`-` like structure.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - c Cyclohexane is higher than water and has boat as well as chair structures.

Discussion

753.	Assertion: The melting and boiling point of alkanes are less compared with the inorganic compounds.Reason: the attractive forces in their molecules are quite weak.(a) A is correct, R is correct and R is a correct explanation of A.(b) A is not correct,R is correct and R is not a explanation for A.(c) Both A and R are wrong.(d) R is correct reason but A is wrong.
Answer» (a) A is correct, R is correct and R is a correct explanation of A.

Discussion

754.	What type of structural isomerism is shown by alkanes?
Answer» Chain Isomerism.

Discussion

755.	Assertion `:`Alkeanes having more than three carbon atoms exhibit chain isomerism. Reason `:` All carbon atoms in alkanes are `sp-`hybridizedA. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - c Alkyanes have `sp^(3)` hybridized carbon

Discussion

756.	Why are alkanes insoluble in water and readily soluble in organic solvents like chloroform or ether?
Answer» The solubility of any substance is governed by the principle of like dissolves like. This means polar compounds are soluble in polar solvents while nonpolar compounds are soluble in nonpolar solvents. Alkanes consist of C – C and C – H nonpolar covalent bonds and thus, they are nonpolar in nature, whereas water is a polar solvent. The dipole-dipole forces that exist between water molecules is much stronger than the forces of attraction between alkane and water molecules. Hence, Alkanes are insoluble in water and readily soluble in organic solvents like chloroform or ether.

756.

Why are alkanes insoluble in water and readily soluble in organic solvents like chloroform or ether?

Answer»

The solubility of any substance is governed by the principle of like dissolves like. This means polar compounds are soluble in polar solvents while nonpolar compounds are soluble in nonpolar solvents.
Alkanes consist of C – C and C – H nonpolar covalent bonds and thus, they are nonpolar in nature, whereas water is a polar solvent.
The dipole-dipole forces that exist between water molecules is much stronger than the forces of attraction between alkane and water molecules.

Hence,

Alkanes are insoluble in water and readily soluble in organic solvents like chloroform or ether.

Discussion

757.	Assertion: Alkanesare saturated hydrocarbons.Reason: saturated hydrocarbons are only formed by C-C single bond.(a) A is correct, R is correct and R is a correct explanation of A.(b) A is not correct,R is correct and R is not a explanation for A.(c) Both A and R are wrong.(d) R is correct reason but A is wrong.
Answer» (a) A is correct, R is correct and R is a correct explanation of A.

Discussion

758.	Acetylene can be obtained by the reactionA. `HCOOK overset(el ectrolysis)rarr`B. `CHI_(3)+6 Ag+CHI_(3) overset(Delta)rarr`C. `CH_(3)CH_(2)OHoverset(Conc. H_(2)SO_(4))underset(443^(@)C)rarr`D. `Be_(2)C+H_(2)O rarr`
Answer» Correct Answer - b Acetylene can be obtained by the reaction of silver and chloroform `(` or iodoform `)` `2CHl_(3)+6aGoverset(Delta)rarrunderset(acetyl en e)(C_(2)H_(2)+6Agl)`

Discussion

759.	Why benzene is reluctant to show addition reaction?
Answer» Due to resonance benzene loses it pure double bond character redering it partial single bond character to double bond and double bond character to single bond. This causes for the reluctance of `pi`-electrons to participate in addition reactions Moreover addition reaction destroys the aromaticity of the benzene molecule.

Discussion

760.	The ragent(s) required to convert 1-butyl to 2-butanone is (are)A. dilute `H_(2)SO_(4)`B. `ZnCl_(4)+HCl`C. `Hg^(2+)+H_(2)SO_(4)("dilute")`D. Alk. `KMnO_(4)`
Answer» Correct Answer - C

Discussion

761.	Which is the weakes acid among the following?A. HClB. AcetyleneC. PhenolD. Picric acid
Answer» Correct Answer - B

Discussion

762.	Propyne on passing through red hot copper tybe formsA. BenzeneB. ToulenceC. MesityleneD. None
Answer» Correct Answer - C

Discussion

763.	An organic compound on treatment with `Br_(2)//C Cl_(4)`, gives a bromoderivative alkene. The compound will beA. `CH_(3)-CH=CH_(2)`B. `CH_(3)CH=CHCH_(3)`C. `HC=CH`D. `H_(2)C=CH_(2)`
Answer» Correct Answer - C On adding `Br_(2)` acetylene gives 1,2-dibromoethaen-a bromoderivative of an alkene `HC-=CH underset(C Cl_(4))overset(Br_(2))to BrCH=CHBr`

Discussion

764.	Colouration of `Br_(2)//C Cl_(4)` will be discharged byA. B. C. D.
Answer» Correct Answer - A

Discussion

765.	An organic compound on treatment with `Br_(2)//C Cl_(4)`, gives a bromoderivative alkene. The compound will beA. `CH_(3)CH=CH_(2)`B. `CH_(3)CH=CHCH_(3)`C. `HC-=CH`D. `CH_(2)=CH_(2)`
Answer» Correct Answer - C `CH-=CH+Br_(2) overset(C Cl_(4))rarrunderset("Dibromoethylene")(BrCH=CHBr)`

Discussion

766.	the ozonolysis product(s) of the following reaction is(are) `CH_(3)CH_(2)-C-=CH underset("(ii) "H_(2)O)overset((i)" "O_(3))to`product(s)A. `CH_(3)COCH_(3)`B. `CH_(3)COCH_(3)+HCHO`C. `CH_(3)COOH+HCOOH`D. `CH_(3)CH_(2)COOH+HCOOH`
Answer» Correct Answer - D

Discussion

767.	Which of the following compounds are aromatic according to Huckel’s rule?
Answer» A = Has 8π electrons, does not follow Huckel rule. Orbitals of one carbon atom are not in conjugation. It is not aromatic. B = Has 6π delocalised electrons. Hence, is aromatic. C = Has 6π electrons in conjugation but not in the ring. Non aromatic. D = 10π electrons in planar rings, aromatic. E = Out of 8π electrons it has delocalised 6π electrons in one six membered planar ring, which follows Huckel’s rule due to which it will be aromatic. F = 14 π electrons are in conjugation and are present in a ring. Huckel’s rule is being followed. Compound will be aromatic if ring is planar.

767.

Which of the following compounds are aromatic according to Huckel’s rule?

Answer»

A = Has 8π electrons, does not follow Huckel rule. Orbitals of one carbon atom are not in conjugation. It is not aromatic.

B = Has 6π delocalised electrons. Hence, is aromatic.

C = Has 6π electrons in conjugation but not in the ring. Non aromatic.

D = 10π electrons in planar rings, aromatic.

E = Out of 8π electrons it has delocalised 6π electrons in one six membered planar ring, which follows Huckel’s rule due to which it will be aromatic.

F = 14 π electrons are in conjugation and are present in a ring. Huckel’s rule is being followed. Compound will be aromatic if ring is planar.

Discussion

768.	Markovnikov’s rule is applicable for ………….. (A) CH2 = CH2(B) CH3CH = CHCH3(C) CH3CH2CH = CHCH2CH3(D) (CH3)2C = CH2
Answer» Correct option is: (D) \((CH_3 )_2 C = CH_2\) Markovnikov’s rule is applicable for un symmetrical alkenes. Therefore, \((CH_3 )_2 C = CH_2\) can follow Markovnikov’s rule. (D) (CH₃)₂C = CH₂

768.

Markovnikov’s rule is applicable for ………….. (A) CH2 = CH2(B) CH3CH = CHCH3(C) CH3CH2CH = CHCH2CH3(D) (CH3)2C = CH2

Answer»

Correct option is: (D) \((CH_3 )_2 C = CH_2\)

Markovnikov’s rule is applicable for un symmetrical alkenes.

Therefore, \((CH_3 )_2 C = CH_2\) can follow Markovnikov’s rule.

(D) (CH₃)₂C = CH₂

Discussion

769.	Wurtz reaction on a mixture of ethyl halide and isobutyl halide gives:A. Butane and isobutaneB. Butane and 2,5-dimethyl hexaneC. Butane,2,5-dimethylhexane and isohxaneD. Butane and isohexane
Answer» Correct Answer - C `CH_(3)-CH_(2)-X+CH_(3)-underset(CH_(3))underset(\|)(C)H-CH_(3)-Xunderset("Ether")overset(Na//dry)toCH_(3)-CH_(2)-CH_(2)-CH_(3)+CH_(3)-overset(CH_(3))overset(\|)(C)H-CH_(2)-CH_(2)-overset(CH_(3))overset(\|)(C)H-CH_(3)+CH_(3)-underset(CH_(3))underset(\|)(C)H-CH_(2)-CH_(2)-CH_(3)`

Discussion

770.	The products expected to be formed in the Wurtz reaction of a mixture of neopentyl bromide and isobutyl bromide are (i)2,2,4-trimethylpentane (ii)2,2,5,5-tetramethylhexane (iii)2,2,4,4-tetramethylhexane (iv)2,5-dimethyl hexane (v)2,2,5-trimethylhexaneA. (ii),(iii) and (v)B. (ii), (iv) and (v)C. (i),(iv) and (v)D. (i) , (iii) and (v)
Answer» Correct Answer - B `underset"Neopentyl bromide (A)"(CH_3-undersetunderset(CH_3)\|oversetoverset(CH_3)\|C-CH_2Br)+underset"Isobutyl bromide (B)"(BrCH_2-oversetoverset(CH_3)\|CH-CH_3)underset"(Wurtz reaction)"overset("Na/dry ether,"Delta)to underset"(Dimerization product of A)"underset"2,2,5,5-Tetramethylhexane (ii)"(CH_3-undersetunderset(CH_3)\|oversetoverset(CH_3)\|(.^2 C)-CH_2-CH_2-undersetunderset(CH_3)\|oversetoverset(CH_3)\|(.^5C)-CH_3)+underset"(Dimerization product of B)"underset"2,5-Dimethylhexane (iv)"(CH_3-oversetoverset(CH_3)\|(.^2CH)-CH_2-CH_2-oversetoverset(CH_3)\|(.^5CH)-CH_3)+underset"(Cross product of A and B)"underset"2,2,5-Trimethylhexane (v)"(CH_3-undersetunderset(CH_3)\|oversetoverset(CH_3)\|(.^2C)-CH_2-CH_2-oversetoverset(CH_3)\|(.^5CH)-CH_3)`

Discussion

771.	The total number of `p-` bond electrons in the following structure is A. 8B. 12C. 16D. 4
Answer» Correct Answer - a No. of double bonds `=4` ltbr. No. of `p-` bond electrons `=2 xx `no. of double bond `=2xx4=8.`

Discussion

772.	In the reaction, `H-C-=C-H underset((ii)CH_3CH_2Br)overset((i)NaNH_2//liq. NH_3)to X underset((ii)CH_3CH_2Br) overset((i)NaNH_2//liq. NH_3)to Y` X and Y areA. X=2-butyne, Y=2-hexyneB. X=1-butyne, Y=2-hexyneC. X=1-butyne, Y=3-hexyneD. X=2-butyne, Y=3-hexyne
Answer» Correct Answer - C `H-C-=C-H underset(-NH_3)overset(NaNH_3//liq. NH_3) to H-C-=C^(-)Na^+ underset(-NaBr)overset(CH_3CH_2Br)to underset"1-Butyne (X)"(H-C-=C-CH_2CH_3) underset(-NH_3)overset(NaNH_2 // liq. NH_3)to Na^+ .^-C-=C-CH_2CH_3 underset(-NaBr)overset(CH_3CH_2Br)to underset"3-Hexyne"(CH_3CH_2-C-=C-CH_2CH_3)`

Discussion

773.	In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A) : Nitration of benzene with nitric acid requires the use of concentrated sulphuric acid.Reason (R) : The mixture of concentrated sulphuric acid and concentrated nitric acid produces the electrophile, NO2+ .(i) Both A and R are correct and R is the correct explanation of A.(ii) Both A and R are correct but R is not the correct explanation of A.(iii) Both A and R are not correct.(iv) A is not correct but R is correct.
Answer» (i) Both A and R are correct and R is the correct explanation of A.

Discussion

774.	Assertion (A): Nitration of benzene with nitric acid requires the use of concentrated sulphuric acid. Reason (R):The mixture of concentrated sulphuric acid and concentrated nitric acid produces the electrophile, `NO_2^+`.A. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.B. Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.C. Both Assertion and Reason are not correctD. Assertion is not correct but Reason is correct.
Answer» Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

Discussion

775.	Statement-1: Ethyne is stronger acid than ethene. and Statement-2 Introduction of alkyl group activates benzene ring
Answer» Correct Answer - C

Discussion

776.	Ethene can be separated from ethyne by passing the mixture throughA. concentrated `H_(2)SO_(4)`B. ammonical `Cu_(2)Cl_(2)`C. pyrogallolD. charcoal powder
Answer» Correct Answer - B Ethene is less acidic than ethyne so it not react with `CH_(2)Cl_(2)` while ethyne reacts.

Discussion

777.	Assertion `:` When double and triple bonds are in conjugation, addition takes place at triple bond. Reason`:` When double and triple bond are not in the conjugation, addition takes place at double bond.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - b Conceptual `(` Stability of intermediate `)`

Discussion

778.	Which of the following reagents cannot be used to locate the position of triple bond in `CH_(3)-C-=C-CH_(3)` ?A. `Br_(2)`B. `O_(3)`C. `Cu_(2)^(2+)`D. `KMnO_(4)`
Answer» Correct Answer - c `CH_(3).C-=C.CH_(3)overset(Cu_(2)^(2+))rarr`No reaction

Discussion

779.	In its reaction with silver nitrate acetylene showsA. Acidic propertyB. Reducting propertyC. Basic propertyD. Oxidisting property
Answer» Correct Answer - a Acidic property because `H` atoms are replaced by silver metal atoms.

Discussion

780.	Water can be added across a triple bond in the presence ofA. acidic mediumB. alkaline mediumC. neutral mediumD. acid and `HgSO_(4)`
Answer» Correct Answer - D `H^(+)` ion forms cation because `H_(2)O` is too acidic.

Discussion

781.	The compounds 1-butyne and 2-butyne can be distinguished by usingA. bromine waterB. `KMnO_(4)` solutionC. Tollens reagentD. chlorine gas
Answer» Correct Answer - C `CH_(3)-CH_(2)-C-=CH`(I-butyne) have acidic hydrogen while 2-butyne not acidic.

Discussion

782.	Acetylene reacts with `HCN` in the presence of `Ba(CN)_(2)` to yield `:`A. Viyny cyanideB. `1,1-`dicyanoethaneC. `1,2-`dicyanoetheneD. None
Answer» Correct Answer - a `CH-=CH+HCNoverset(Ba(CN)_(2))rarrunderset("Vinyl cyanide")(CH_(2)=CH(CN))`

Discussion

783.	Acetylene reacts with `HCN` in the presence of `Ba(CN)_(2)` to yield `:`A. `1,1-`dicyano ethaneB. Viny cyanideC. Ethyl cynideD. Divnyl cyanide
Answer» Correct Answer - b `CH-= CH+HCN overset(Ba(CN)_(2))rarrunderset(Vi nyl cyan i d e )(CH_(2)=CH-C-=N`

Discussion

784.	product formed by the oxidation of acetylene in the presence of alkaline `KMnO_(4)`.A. GlyoxalB. OxyraneC. `CO_(2)+H_(2)O`D. Oxalic acid
Answer» Correct Answer - D

Discussion

785.	What is formed when calcium carbide reacts with heavy water?A. `C_(2)D_(2)`B. `CaD_(2)`C. `CaD_(2)O`D. `CD_(2)`
Answer» Correct Answer - A `CaC_(2)+D_(2)O to CD-=CD+Ca(OD)_(2)`

Discussion

786.	Acetylene on treating with HI gives-A. 1,1-DiiodoethaneB. EthyleneC. IodoethaneD. Ethane
Answer» Correct Answer - A

Discussion

787.	Acetylene and ethylene react with alk `KMnO_(4)` to give-A. Oxalic acid and formic acidB. Acetic acid and ethylene glycolC. Ethyl alcohol and ethylene glycolD. None
Answer» Correct Answer - A

Discussion

788.	Give one hydrocarbon which delcolourises alk KMnO4.
Answer» Ethene (CH₂ = CH₂)

Discussion

789.	What would be the product when ethene is oxidised with ozone and forms ozonide which is hydrolysed in the presence of Zn and acetic acid?A. `H-underset(O)underset(\|\|)(C)-H`B. `CH_(3)OH`C. `H-underset(O)underset(\|\|)(C)-OH`D. `H-underset(O)underset(\|\|)(C)-underset(O)underset(\|\|)(C)-H`
Answer» Correct Answer - A

Discussion

790.	The unsaturation factor of
Answer» Correct Answer - 6

Discussion

791.	How will you detect the presence of unsaturation in an organic compound?
Answer» Either by Baeyer’s reagent or by Br₂ in CCl₄

Discussion

792.	How will you detect the presence of unsaturation in an organic compound?
Answer» Generally Unsaturated organic compound decolorize Bayer‘s reagent and Bromine water.

Discussion

793.	How will you detect the presence of unsaturation in an organiccompound?
Answer» Unsaturated organic compound decolorize the Brominewater.

Discussion

794.	Give two chemical tests to detect unsaturation in organic compounds.
Answer» Bromine test: When 5% solution of bromine in carbon tetrachloride is added to an alkene, it gets decolourized. This Indicate the presence of unsaturation in organic compound. Bayer’s test: When alkene is oxidised with cold,. alkaline KMnO₄, diol is formed. The KMnO₄ gets decolourized. This indicates the presence of unsaturation of organic compound.

Discussion

795.	In the reaction given below, `X` is `C_(6)H_(5)MgBr+CH_(3)OHrarrX`A. `C_(6)H_(6)`B. `C_(6)H_(5)OH`C. `C_(2)H_(5)OCH_(3)`D. `CH_(3)COOH`
Answer» Correct Answer - A `C_(6)H_(5)MgBr+CH_(3)OH to C_(6)H_(6)+Mg-Br-OH`

Discussion

796.	`CH_(3)-CH=CH_(2)overset((1) THF:BD_(3))underset((2) CH_(3)CO_(2)T)(to)(A)`, Product (A) of the above reaction is:A. `CH_(3)-CHD-CH_(2)D`B. `CH_(3)-CHT-CH_(2)T`C. `CH_(3)-CHD-CH_(2)T`D. `CH_(3)-CHT-CH_(2)D`
Answer» Correct Answer - c Hydroboration -reduction take place. `CH_(3)-CH=CH_(2)overset(THE BD_(3))to (CH_(3)-overset(D)overset(\|)CH-CH_(2)-)_(3)Boverset(CH_(3)-CO_(2)T)toCH_(3)-overset(D)overset(\|)CH-CH_(2)T`

Discussion

797.	An organic compound `C_(4)H_(6)` on ozonolysis give `HCHO, CO_(2), CH_(3)CHO`. Compound will be:A. `H_(2)C=CH-CH=CH_(2)`B. `CH_(3)-CH=C=CH_(2)`C. `CH_(3)-C-=C-CH_(3)`D.
Answer» Correct Answer - b Cumulative dienes.

Discussion

798.	cis-2-butene`overset(HBr)underset("Peroxide")(to)`product, Product of the reaction is:A. RacemicB. DiastereomersC. MesoD. Pure enantiomers
Answer» Correct Answer - a `CH_(3)-CH_(2)-underset(Br)underset(\|)overset(**)CH-CH_(3)` (racemic mixture)

Discussion

799.	Addition of `BH_(3)` followed by `H_(2)O_(2)` to trans-2-butene would give a product which is:A. achiralB. racemicC. mesoD. Optically active
Answer» Correct Answer - b Hydroboration -oxidation reaction is a syn- additon.

Discussion

800.	Which of the following best describes the flow of electrons in the acid-catalyed dimerizantion of `(CH_(3))_(2)C=CH_(2)`?A. B. C. D.
Answer» Correct Answer - a Carbocation formed will attcked by alkene.

Discussion

Explore topic-wise InterviewSolutions in .

Consider the following reaction The reactive intermediate invovled in this reaction isA. cArbanionB. CarbocationC. Free radical anionD. Free radical cation.

What type of structural isomerism is shown by alkanes?

Why are alkanes insoluble in water and readily soluble in organic solvents like chloroform or ether?

Acetylene can be obtained by the reactionA. `HCOOK overset(el ectrolysis)rarr`B. `CHI_(3)+6 Ag+CHI_(3) overset(Delta)rarr`C. `CH_(3)CH_(2)OHoverset(Conc. H_(2)SO_(4))underset(443^(@)C)rarr`D. `Be_(2)C+H_(2)O rarr`

Why benzene is reluctant to show addition reaction?

The ragent(s) required to convert 1-butyl to 2-butanone is (are)A. dilute `H_(2)SO_(4)`B. `ZnCl_(4)+HCl`C. `Hg^(2+)+H_(2)SO_(4)("dilute")`D. Alk. `KMnO_(4)`

Which is the weakes acid among the following?A. HClB. AcetyleneC. PhenolD. Picric acid

Propyne on passing through red hot copper tybe formsA. BenzeneB. ToulenceC. MesityleneD. None

An organic compound on treatment with `Br_(2)//C Cl_(4)`, gives a bromoderivative alkene. The compound will beA. `CH_(3)-CH=CH_(2)`B. `CH_(3)CH=CHCH_(3)`C. `HC=CH`D. `H_(2)C=CH_(2)`

Colouration of `Br_(2)//C Cl_(4)` will be discharged byA. B. C. D.

An organic compound on treatment with `Br_(2)//C Cl_(4)`, gives a bromoderivative alkene. The compound will beA. `CH_(3)CH=CH_(2)`B. `CH_(3)CH=CHCH_(3)`C. `HC-=CH`D. `CH_(2)=CH_(2)`

the ozonolysis product(s) of the following reaction is(are) `CH_(3)CH_(2)-C-=CH underset("(ii) "H_(2)O)overset((i)" "O_(3))to`product(s)A. `CH_(3)COCH_(3)`B. `CH_(3)COCH_(3)+HCHO`C. `CH_(3)COOH+HCOOH`D. `CH_(3)CH_(2)COOH+HCOOH`

Which of the following compounds are aromatic according to Huckel’s rule?

Markovnikov’s rule is applicable for ………….. (A) CH2 = CH2(B) CH3CH = CHCH3(C) CH3CH2CH = CHCH2CH3(D) (CH3)2C = CH2

Wurtz reaction on a mixture of ethyl halide and isobutyl halide gives:A. Butane and isobutaneB. Butane and 2,5-dimethyl hexaneC. Butane,2,5-dimethylhexane and isohxaneD. Butane and isohexane

The total number of `p-` bond electrons in the following structure is A. 8B. 12C. 16D. 4

In the reaction, `H-C-=C-H underset((ii)CH_3CH_2Br)overset((i)NaNH_2//liq. NH_3)to X underset((ii)CH_3CH_2Br) overset((i)NaNH_2//liq. NH_3)to Y` X and Y areA. X=2-butyne, Y=2-hexyneB. X=1-butyne, Y=2-hexyneC. X=1-butyne, Y=3-hexyneD. X=2-butyne, Y=3-hexyne

Statement-1: Ethyne is stronger acid than ethene. and Statement-2 Introduction of alkyl group activates benzene ring

Ethene can be separated from ethyne by passing the mixture throughA. concentrated `H_(2)SO_(4)`B. ammonical `Cu_(2)Cl_(2)`C. pyrogallolD. charcoal powder

Which of the following reagents cannot be used to locate the position of triple bond in `CH_(3)-C-=C-CH_(3)` ?A. `Br_(2)`B. `O_(3)`C. `Cu_(2)^(2+)`D. `KMnO_(4)`

In its reaction with silver nitrate acetylene showsA. Acidic propertyB. Reducting propertyC. Basic propertyD. Oxidisting property

Water can be added across a triple bond in the presence ofA. acidic mediumB. alkaline mediumC. neutral mediumD. acid and `HgSO_(4)`

The compounds 1-butyne and 2-butyne can be distinguished by usingA. bromine waterB. `KMnO_(4)` solutionC. Tollens reagentD. chlorine gas

Acetylene reacts with `HCN` in the presence of `Ba(CN)_(2)` to yield `:`A. Viyny cyanideB. `1,1-`dicyanoethaneC. `1,2-`dicyanoetheneD. None

Acetylene reacts with `HCN` in the presence of `Ba(CN)_(2)` to yield `:`A. `1,1-`dicyano ethaneB. Viny cyanideC. Ethyl cynideD. Divnyl cyanide

product formed by the oxidation of acetylene in the presence of alkaline `KMnO_(4)`.A. GlyoxalB. OxyraneC. `CO_(2)+H_(2)O`D. Oxalic acid

What is formed when calcium carbide reacts with heavy water?A. `C_(2)D_(2)`B. `CaD_(2)`C. `CaD_(2)O`D. `CD_(2)`

Acetylene on treating with HI gives-A. 1,1-DiiodoethaneB. EthyleneC. IodoethaneD. Ethane

Acetylene and ethylene react with alk `KMnO_(4)` to give-A. Oxalic acid and formic acidB. Acetic acid and ethylene glycolC. Ethyl alcohol and ethylene glycolD. None

Give one hydrocarbon which delcolourises alk KMnO4.

What would be the product when ethene is oxidised with ozone and forms ozonide which is hydrolysed in the presence of Zn and acetic acid?A. `H-underset(O)underset(||)(C)-H`B. `CH_(3)OH`C. `H-underset(O)underset(||)(C)-OH`D. `H-underset(O)underset(||)(C)-underset(O)underset(||)(C)-H`

The unsaturation factor of

How will you detect the presence of unsaturation in an organic compound?

How will you detect the presence of unsaturation in an organic compound?

How will you detect the presence of unsaturation in an organiccompound?

Give two chemical tests to detect unsaturation in organic compounds.

In the reaction given below, `X` is `C_(6)H_(5)MgBr+CH_(3)OHrarrX`A. `C_(6)H_(6)`B. `C_(6)H_(5)OH`C. `C_(2)H_(5)OCH_(3)`D. `CH_(3)COOH`

`CH_(3)-CH=CH_(2)overset((1) THF:BD_(3))underset((2) CH_(3)CO_(2)T)(to)(A)`, Product (A) of the above reaction is:A. `CH_(3)-CHD-CH_(2)D`B. `CH_(3)-CHT-CH_(2)T`C. `CH_(3)-CHD-CH_(2)T`D. `CH_(3)-CHT-CH_(2)D`

An organic compound `C_(4)H_(6)` on ozonolysis give `HCHO, CO_(2), CH_(3)CHO`. Compound will be:A. `H_(2)C=CH-CH=CH_(2)`B. `CH_(3)-CH=C=CH_(2)`C. `CH_(3)-C-=C-CH_(3)`D.

cis-2-butene`overset(HBr)underset("Peroxide")(to)`product, Product of the reaction is:A. RacemicB. DiastereomersC. MesoD. Pure enantiomers

Addition of `BH_(3)` followed by `H_(2)O_(2)` to trans-2-butene would give a product which is:A. achiralB. racemicC. mesoD. Optically active

Which of the following best describes the flow of electrons in the acid-catalyed dimerizantion of `(CH_(3))_(2)C=CH_(2)`?A. B. C. D.