285 + Interview Questions in ALKENE IN GENERAL AWARENESS Page 1 InterviewSolution

1.	An organic compound `C_(3)H_(6)O` does not give a precipitate with 2,4-Dintirophenyl hydrazine reagent-A. `CH_(3)CH_(2)CHO`B. `CH_(3)COCH_(3)`C. `CH_(2)=CH-CH_(2)OH`D.
Answer» Correct Answer - C::D

Discussion

2.	Which of the following will give yellow precipitate with `I_(2)//NaOH`-A. `ICH_(2)COCH_(2)CH_(2)`B. `CH_(2)COOCOCH_(3)`C. `CH_(3)CONH_(2)`D. `CH_(3)CH(OH)CH_(2)CH_(3)`
Answer» Correct Answer - A

Discussion

3.	`C_(5)H_(10)` represents three isomeric alkenes `A_(1),A_(2)` and `A_(3)`. Each on hydrogeration gives `2-`methylbutane. `A_(1)` and `A_(2)` on oxymercuration-demercuration give the same `3^(o)` alcohol. `A_(2)` and `A_(3)` on hydroboration oxidation give different `1^(o)` alcohol. Assign structures to `A_(1), A_(2)` and `A_(3)` and explain the reactions.
Answer» Correct Answer - `A_(1),A_(2)`orA_(3)overset(H_(2))rarrH_(3)Cunderset(CH_(3))underset(\|)CHCH_(2)CH_(3)` This shows that each of `A_(3),A_(2)` and `A_(3)` have same `C-chain: only position of `(C=C)` is to be decided. `A_(1),A_(2)`underset("demercuration")overset("oxymercuration")rarr3^(o)` alcohol hecne `A_(1)` and `A_(2)` have groupings. `A_(2)` and `A_(3)`overset("hydroboration oxidation")rarr1^(o)` alcohol This indicates presence of `(CH_(2=)` grouping at the terminal. Hence, `A_(1)` is `CH_(3)underset(CH_(3))underset(\|)C=CHCH_(3)` `A_(2)` is CH_(3)CH_(2)underset(CH_(3))underset(\|)C=CH_(2)` `A_(3)` is CH_(3)underset(CH_(3))underset(\|)CHCH=CH_(2)` `A_(1)` or `A_(2) underset("demercuration")overset("oxymercuration")rarrCH_(3)underset(CH_(3))underset(\|)overset(OH)overset(\|)(C)CH_(2)CH_(3) 3^(o)` alcohol `(X)` `A_(2)underset("oxidation")overset("hydroboration")rarr CH_(3)underset(CH_(3))underset(\|)CHCH_(2)CH_(2)OH 1^(o)` alchohol `(Z)` `Y` and `Z` are different `1^(o)` alcohols.

Discussion

4.	`2-`Methylbutane on reacting with bromine in the presence of sunlight gives mainlyA. `2-`bremo`-2-`methylbutaneB. `1-`bromo`-2-`methylbutaneC. `1-`bromo`-3-`methylbutaneD. `2-`bromo`-3-`methylbutane
Answer» Correct Answer - A

Discussion

5.	In the reaction `CH_(2)Br+Mgoverset("dry ether")rarrA+CH_(3)CHOrarr"adduct"overset(H_(3)O^(o+))rarrB`. The product (B) is :A. B. C. D.
Answer» Correct Answer - B

Discussion

6.	Acetaldehyde reacts with NaoH to form:-A. `CH_(3)-CH_(2)-overset(OH)overset(\|)CH-overset(H)overset(\|)C=O`B. `CH_(3)-overset(OH)overset(\|)CH-CH_(2)-overset(H)overset(\|)C=O`C. `CH_(3)-underset(OH)underset(\|)CH-underset(O)underset(\|\|)C-CH_(3)`D. `underset(OH)underset(\|)CH_(2)-CH_(2)=CH_(2)-underset(H)underset(\|)C=O`
Answer» Correct Answer - B

Discussion

7.	`1-`Methylcyclohexene is allowed to react with `B_(2)H_(6)`. The product is then treated with `H_(2)O_(2)` and `NaOH`. The reaction is - The product formed isA. `1-`methylcyclohexanolB. `2-`methylcyclohexanolC. methylcyclohexaneD. cyclohexanol
Answer» Correct Answer - B

Discussion

8.	Which one of the following reagents is suitable for the converston of 2-cyclohexansion into 3-methylcyclohexanone ?A. `CH_(3)Mgl`B. `(CH_(3))_(2)CuLi`C. `CH_(3)I_(2)` and `Zn`D. `CH_(3)AlCl_(2)`
Answer» Correct Answer - B

Discussion

9.	2-Methylcyclohexanone is allowed to react with metachloroperoxobenzoic acid. The major product formed in the reaction isA. B. C. D.
Answer» Correct Answer - C

Discussion

10.	In the reaction The product (A) is :A. B. C. D.
Answer» Correct Answer - C

Discussion

11.	Which of the following statement is//are false.A. Aldol condensation is given by all carbonyl compounds.B. Acetaldehyde and acetone can be distinguished by lodoform test.C. `LiAIH_(4)` converts ketones into secondary alcohols.D. Methanol can be distinguished from ethanol by haloform reaction
Answer» Correct Answer - A::B

Discussion

12.	Assertion : `2, 2-` Dimethylpropanal undergoes Cannizzaro reaction with conc. `NaOH` Reason : Cannizzaro reaction is a disproportionation reactionA. Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-IB. Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-IC. Statement-I is True, Statement-II is False.D. Statement-I is False, Statement-II is True.
Answer» Correct Answer - D

Discussion

13.	`CH_(3)CH_(2)-O-CH_(2)Phunderset(HI)overset("Cold con.")rarrCH_(3)CH_(2)-OH+PhCH_(2)-I`, write mechanism of given reaction.
Answer» Mechanism:- `CH_(3)CH_(2)underset(..)overset(..)OCH_(2)Phoverset(H^(o+))hArrCH_(3)CH_(2)-underset(H)underset(\|)overset(o+)O-CH_(2)PhrarrCH_(3)CH_(2)OH+Phoverset(o+)CH_(2)overset(I^(o+))rarrPhCH_(2)I+CH_(3)CH_(2)-OH`

Discussion

14.	In iso-pentane, the `H` atom that can be most easily substituated by free radical mechanism is on:- `overset(1)CH_(3)-underset(CH_(3))underset(\|)overset(2)CH-overset(3)CH_(2)overset(4)CH_(3)`A. `C-1`B. `C-2`C. `C-3`D. `C-4`
Answer» Correct Answer - B Ease of subsituation of various types of `H` atoms `3^(@)gt2^(@)gt1^(@)`.

Discussion

15.	Ozonolysis of benzene in vigorous condition yields :A. GlyoxalB. GlycerineC. GlycolD. Glycerol
Answer» Correct Answer - A Ozonolysis of benzene yields glyoxal. Benzene adds three molecules of ozone and forms benzene triozonide which of decomposition with water gives three molecules of glyoxal. `underset("benzene")(C_(6)H_(6))+underset("ozone")(3O_(3))rarrunderset("benzene triozonide")(C_(6)H_(6)O_(9))` `underset("benzene trizonide")(C_(6)H_(6)O_(9))overset(+H_(2)O)rarr3underset("Glyoxal")underset(H-C=O)overset(H-C=O)overset(\|)

Discussion

16.	An organic compound A ( mol wt = 180) is acylated with `CH_3 COCl` to get acylated compound of mol wt. 390. What is the number of amino groups present per molecule of the compound A?A. 2B. 5C. 4D. 6
Answer» Correct Answer - B Change in molecular mass =42 per `NH_(2)` 180 molecular mass after acylation gives compound of molecular mass 390 Change in molecular mass =390-180=210 so number of `NH_(2)` group `=(210)/(42)=5`

Discussion

17.	Aldoximes on reduction with `LiAlH_(4)` or `Na//C_(2)H_(5)OH` giveA. `C_(6)H_(5)CH_(2)NH_(2)`B. `C_(6)H_(5)NHCH_(3)`C. D. `C_(6)H_(5)NH_(2)`
Answer» Correct Answer - A

Discussion

18.	Which of the following reactions can be employed for getting odd carbon alkanes in good yield ?A. Wurtz reactionB. Corey-House reactionC. BothD. None of these
Answer» Correct Answer - B Wurtz reaction is suitable for symmetrical (even) alkanes

Discussion

19.	Complete oxidation of ethane yields -A. EthanolB. Ethanoic acidC. Ethanal,D. `CO_(2)` and `H_(2)O`
Answer» Correct Answer - D `2C_(2)H_(6)+7O_(2)rarr4CO_(2)+6H_(2)O`

Discussion

20.	How much propanol is required for dehydration to get `2.24` litre of propene at `N.T.P`. If yield is `100%`
Answer» `C_(3)H_(8)O+H_(2)SO_(4)rarrC_(3)H_(6)+H_(2)O+H_(2)SO_(4)` Molecular weight of propanol `=60` from the equation given above we can see that from dehydration of `1` mole or `60` gram of propanol we get `1` mole (`22.4`lit) of propene as product. `because 22.4` litre of `C_(3)H_(6)` can be get from dehydration of `60g` of propanol. `therefore 1` litre of propene can be get from dehydration of `(60)/(22.4)g` of propanol

Discussion

21.	The `IUPAC` name of `C_(6)H_(5)COCl` isA. Benzoyl chlorideB. Benzene chloro ketoneC. Benzene carbonyl chlorideD. Chloro phenyl ketone
Answer» Correct Answer - C

Discussion

22.	How many litre of Oxygen required for complete conbustion of `6.0g` ethane at `NTP` ?
Answer» `2C_(2)H_(6)+7O_(2)rarr4CO_(2)+6H_(2)O` `60g` ethane required `O_(2)` (at `NTP`) `=7xx22.4` litre `1g` ethane required `O_(2)` (at `NTP`) `=(7xx22.4)/(2xx30)litre` `6g` ethane required `O_(2)` (at `NTP`) `=(7xx22.4)/(2xx30)xx6=15.68` litre

Discussion

23.	Statement-I : Alkyness are more reactive than alkenes towards electrophilic reagents like `H^(+)`. Because Statement-II : The alkyl carbocation formed from alkene is more stable than the uinyl carbocation formed from alkyne.
Answer» Correct Answer - D

Discussion

24.	Among the compounds the order of decreasing reactivity towards electrophilic substitution isA. `IIgtIgtIIIgtIV`B. `IIIgtIgtIIgtIV`C. `IVgtIgtIIgtIII`D. `IgtIIgtIIIgtIV`
Answer» Correct Answer - B

Discussion

25.	The reactivity of compound `Z` with different halogens under appropriate conditions is gives below- The observed pattern of electrophilic substitution can be explained by-A. The steric effect of the halogenB. The steric effect of the tert-butyl groupC. The electronic effect of the phenolic groupD. The electronic effect of the turt-butyl group
Answer» Correct Answer - A::B::C

Discussion

26.	Identify the correct order of reactivity in electrophilic substitution reaction of the following compounds A. `1gt2gt3gt4`B. `4gt3gt2gt1`C. `3gt1gt3gt4`D. `2gt3gt1gt4`
Answer» Correct Answer - A

Discussion

27.	Statement-I: Phenol is more reactive than benzene towards electrophilic substitution reaction. Because Statement-II: In the case of phenol, the intermediate carbocation is more reasonance stablized.A. Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-IB. Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-IC. Statement-I is True, Statement-II is False.D. Statement-I is False, Statement-II is True.
Answer» Correct Answer - A

Discussion

28.	The correct order of reactivity towards the electrophilic substitution of the compounds anisole (I), benzene (II) and nitrobenzene (III) is :-A. `IIIgtIIgtI`B. `IIgtIIIgtI`C. `IltIIgtIII`D. `IgtIIgtIII`
Answer» Correct Answer - D

Discussion

29.	Aldehyde and ketones are specially susceptible susceptible to nucleophile addition because carbonyl group (due to electronegatvity different between carbon and oxygen). Positive charge on carbon makes it reactive towards the nucleophile. This addition is catalysed by acid. Reactivity of carbonyl compound towards nucleophilic addition increases in the electron deficience at carbonyl carbon. Thus, (-I.E.) group increase while (+I.E.) groups decrease the reactivity of carbonyl compound Which of the following is most reactve to give nucleophilic addition?A. `FCH_(2)CHO`B. `CICH_(2)CHO`C. `BrCH_(2)CHO`D. `ICH_(2)CHO`
Answer» Correct Answer - A

Discussion

30.	Which of the following reacts with water to form very stable product ?A. `CH_(3)Cl`B. `C Cl_(4)`C. `C Cl_(3)CHO`D. `CH_(2)ClCH_(2)Cl`
Answer» Correct Answer - C

Discussion

31.	Statement-I : Of two isomeric alkennes shown, `II` is more stable than `I`. Because Statement-II : The alkene (II) has `sp^(2)-hybridlzed carbons.
Answer» Correct Answer - C

Discussion

32.	Statement-I: `R-C-=O^(+)` is more stable than `R-C^(+)=O` Because Statement-II: Resonance in carbonyl compound provides A. Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-IB. Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-IC. Statement-I is True, Statement-II is False.D. Statement-I is False, Statement-II is True.
Answer» Correct Answer - B

Discussion

33.	Consider the following reaction. (1R,3S)-cis-Bromo-3-methylcyclohexane ltbr gtThe product formed in the reaction isA. (1R,3S)-cis-3-methylcyclohexanolB. (1S,3R)-cis-3-methylohexanolC. (1S,3S)-trans-3-methylcyclohexanolD. (!R,3R)-trans-3-methylcyclohexanol
Answer» Correct Answer - C

Discussion

34.	Statement-I : Buta`-1,3-`diene is less stable than Penta`-1,4-`do,eme, ltbr. Because Statement-II : Buta`-1,3-`diene has greater number of reasonating structures and delocallsed electron cloud.
Answer» Correct Answer - D

Discussion

35.	Statement-I : Iodination of alkanes is carried out in the presence of iodic acid. Because Statement-II : Iodic acid removes `I_(2)` gas from the reaction mixture.
Answer» Correct Answer - C

Discussion

36.	Statement-I : Propene is more reactive than ethnc with `HCl`. Because Staement-II : Propene is more stable than ethene.
Answer» Correct Answer - B

Discussion

37.	In the presence of a small amount of phosphorous, aliphatic carboxylic acids react with chlorine or bromine to yield a compound in which `alpha`- hydrogen has been replaced by halogen. This reaction is known as :A. Elard reactionB. Hell-Volhard-Zelinsky reactionC. Wolff-Kischner reactionD. Rosenmund reaction
Answer» Correct Answer - B `CH_(3)-underset(O)underset(\|\|)C-OHoverset(Red P+Cl_(2))rarrCl-CH_(2)-underset(O)underset(\|\|)C-OH`

Discussion

38.	The intermediate during the addition of `HCl` to propene in the presence of peroxide is :A. `CH_(3)CHCH_(4)CL`B. `CH_(3)overset(o+)CHCH_(3)`C. `CH_(3)CH_(2)overset(*)CH_(2)`D. `CH_(3)CH_(2)overset(o+)CH_(2)`
Answer» Correct Answer - B

Discussion

39.	Propyne on reaction with aqueous chlorine gives-A. `1,1,2,2-`TetrachloropropaneB. `1,2-`DichloropropeneC. `1,1-`DichloropropanoneD. `2,2-`Dichloropropanone
Answer» Correct Answer - C `CH_(3)-C-=CH+2HOClrarr[CH_(3)-underset(OH)underset(\|)overset(OH)overset(\|)(C)-CHCl_(2)]overset(-H_(2)O)toCH_(3)-overset(O)overset(\|\|)(C)-CHCl_(2)`

Discussion

40.	Propyne and propene can be distinguished by `:`A. conc. `H_(2)SO_(4)`B. `Br_(2)` in `C Cl_(2)`C. `dil.KMnO_(4)`D. `AgNO_(3)` in ammonia
Answer» Correct Answer - D

Discussion

41.	Following statements is/are correct about mixture :A. mixture is 3-types of oximesB. mixture is 2-types of oximesC. all are optically activeD. one is optically active
Answer» Correct Answer - A

Discussion

42.	The product of acid hydrolysis of P and Q can be distinguished by A. 2,4-DNPB. Lucas reagent `(ZnCl_(2)+"conc."HCl)`C. `NaHSO_(3)`D. Fehlings solution
Answer» Correct Answer - D

Discussion

43.	Any one of the product formed is : A. B. C. D.
Answer» Correct Answer - C::D

Discussion

44.	Nitrobenzene can be prepared from benzene by using a mixture of conc. `HNO_3` and conc. In the nitrating mixture, `HNO_3` acts as a/anA. BaseB. AcidC. Reducing agentD. Catalyst
Answer» Correct Answer - A

Discussion

45.	Statement-I : Benzene on heating with conc. `H_(2)SO_(4)` gives benzene sulphonic acid which when heated with superheated steam under pressure gives benzene. Because Statement-II : Sulphonation is a reversible process.A. Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-IB. Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-IC. Statement-I is True, Statement-II is False.D. Statement-I is False, Statement-II is True.
Answer» Correct Answer - A

Discussion

46.	Statement-I : Chlorination of ethyl benzene with Cl_(2)` in prescence of heat and light nearly yield `1-`yield `1-`chloro`-1-`phenyl ethane as major product. Because Statement-II : The reaction oC Curs through intermediate formation of the radical `C_(6)H_(5)CH-CH_(3)`.
Answer» Correct Answer - A

Discussion

47.	Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on furhter treatment with aqueous KOH yields compound F. Compound F isA. B. C. D.
Answer» Correct Answer - A

Discussion

48.	The decreasing order of strength of the bases, `OH^(-), NH_(2)^(-), H-C-=C^(-)` and `CH_(3)-CH_(2)^(-)`:A. `CH_(3)-CH_(2)^(-)gtNH_(2)^(-)gtHC-=C^(-)gtOH^(-)`B. `HC-=C^(-)gtCH_(3)-CH_(2)^(-)gtNH_(2)^(-)gtOH^(-)`C. `OH^(-)gtNH_(2)^(-)gtHC-=C^(-)gtCH_(3)-CH_(2)^(-)`D. `NH_(2)^(-)gtHC-=C^(-)gtOH^(-)gtCH_(3)-CH_(2)^(-)`
Answer» Correct Answer - A

Discussion

49.	Write `IUPAC` names of :
Answer» (a) `1,5-`Dimethylcyclohexene: (b) `1-(2-`butenyl) cyclothex`-1`-`ene

Discussion

50.	`90 mL` of oxygen is required for complete combustion of unsaturated `20mL` gaseous hydrocarbon, hydrocarbon is ?
Answer» `("Volume of Hydrocarbon")/("Volume of" O_(2))=(2)/(3n)` (for Alkene) `("Volume of Hydrocarbon")/("Volume of" O_(2))=(2)/(3n-1)` (for alkyne) By putting the values in above fomulae we can find the hydrocarbon for which `n` is natural number. ` (20)/(90)=(2)/(3n) n=3` So hydrocarbon is Propene `[C_(3)H_(6)]`.

Discussion

Explore topic-wise InterviewSolutions in .

An organic compound `C_(3)H_(6)O` does not give a precipitate with 2,4-Dintirophenyl hydrazine reagent-A. `CH_(3)CH_(2)CHO`B. `CH_(3)COCH_(3)`C. `CH_(2)=CH-CH_(2)OH`D.

Which of the following will give yellow precipitate with `I_(2)//NaOH`-A. `ICH_(2)COCH_(2)CH_(2)`B. `CH_(2)COOCOCH_(3)`C. `CH_(3)CONH_(2)`D. `CH_(3)CH(OH)CH_(2)CH_(3)`

`2-`Methylbutane on reacting with bromine in the presence of sunlight gives mainlyA. `2-`bremo`-2-`methylbutaneB. `1-`bromo`-2-`methylbutaneC. `1-`bromo`-3-`methylbutaneD. `2-`bromo`-3-`methylbutane

In the reaction `CH_(2)Br+Mgoverset("dry ether")rarrA+CH_(3)CHOrarr"adduct"overset(H_(3)O^(o+))rarrB`. The product (B) is :A. B. C. D.

`1-`Methylcyclohexene is allowed to react with `B_(2)H_(6)`. The product is then treated with `H_(2)O_(2)` and `NaOH`. The reaction is - The product formed isA. `1-`methylcyclohexanolB. `2-`methylcyclohexanolC. methylcyclohexaneD. cyclohexanol

Which one of the following reagents is suitable for the converston of 2-cyclohexansion into 3-methylcyclohexanone ?A. `CH_(3)Mgl`B. `(CH_(3))_(2)CuLi`C. `CH_(3)I_(2)` and `Zn`D. `CH_(3)AlCl_(2)`

2-Methylcyclohexanone is allowed to react with metachloroperoxobenzoic acid. The major product formed in the reaction isA. B. C. D.

In the reaction The product (A) is :A. B. C. D.

Which of the following statement is//are false.A. Aldol condensation is given by all carbonyl compounds.B. Acetaldehyde and acetone can be distinguished by lodoform test.C. `LiAIH_(4)` converts ketones into secondary alcohols.D. Methanol can be distinguished from ethanol by haloform reaction

`CH_(3)CH_(2)-O-CH_(2)Phunderset(HI)overset("Cold con.")rarrCH_(3)CH_(2)-OH+PhCH_(2)-I`, write mechanism of given reaction.

In iso-pentane, the `H` atom that can be most easily substituated by free radical mechanism is on:- `overset(1)CH_(3)-underset(CH_(3))underset(|)overset(2)CH-overset(3)CH_(2)overset(4)CH_(3)`A. `C-1`B. `C-2`C. `C-3`D. `C-4`

Ozonolysis of benzene in vigorous condition yields :A. GlyoxalB. GlycerineC. GlycolD. Glycerol

An organic compound A ( mol wt = 180) is acylated with `CH_3 COCl` to get acylated compound of mol wt. 390. What is the number of amino groups present per molecule of the compound A?A. 2B. 5C. 4D. 6

Aldoximes on reduction with `LiAlH_(4)` or `Na//C_(2)H_(5)OH` giveA. `C_(6)H_(5)CH_(2)NH_(2)`B. `C_(6)H_(5)NHCH_(3)`C. D. `C_(6)H_(5)NH_(2)`

Which of the following reactions can be employed for getting odd carbon alkanes in good yield ?A. Wurtz reactionB. Corey-House reactionC. BothD. None of these

Complete oxidation of ethane yields -A. EthanolB. Ethanoic acidC. Ethanal,D. `CO_(2)` and `H_(2)O`

How much propanol is required for dehydration to get `2.24` litre of propene at `N.T.P`. If yield is `100%`

The `IUPAC` name of `C_(6)H_(5)COCl` isA. Benzoyl chlorideB. Benzene chloro ketoneC. Benzene carbonyl chlorideD. Chloro phenyl ketone

How many litre of Oxygen required for complete conbustion of `6.0g` ethane at `NTP` ?

Statement-I : Alkyness are more reactive than alkenes towards electrophilic reagents like `H^(+)`. Because Statement-II : The alkyl carbocation formed from alkene is more stable than the uinyl carbocation formed from alkyne.

Among the compounds the order of decreasing reactivity towards electrophilic substitution isA. `IIgtIgtIIIgtIV`B. `IIIgtIgtIIgtIV`C. `IVgtIgtIIgtIII`D. `IgtIIgtIIIgtIV`

Identify the correct order of reactivity in electrophilic substitution reaction of the following compounds A. `1gt2gt3gt4`B. `4gt3gt2gt1`C. `3gt1gt3gt4`D. `2gt3gt1gt4`

The correct order of reactivity towards the electrophilic substitution of the compounds anisole (I), benzene (II) and nitrobenzene (III) is :-A. `IIIgtIIgtI`B. `IIgtIIIgtI`C. `IltIIgtIII`D. `IgtIIgtIII`

Which of the following reacts with water to form very stable product ?A. `CH_(3)Cl`B. `C Cl_(4)`C. `C Cl_(3)CHO`D. `CH_(2)ClCH_(2)Cl`

Statement-I : Of two isomeric alkennes shown, `II` is more stable than `I`. Because Statement-II : The alkene (II) has `sp^(2)-hybridlzed carbons.

Consider the following reaction. (1R,3S)-cis-Bromo-3-methylcyclohexane ltbr gtThe product formed in the reaction isA. (1R,3S)-cis-3-methylcyclohexanolB. (1S,3R)-cis-3-methylohexanolC. (1S,3S)-trans-3-methylcyclohexanolD. (!R,3R)-trans-3-methylcyclohexanol

Statement-I : Buta`-1,3-`diene is less stable than Penta`-1,4-`do,eme, ltbr. Because Statement-II : Buta`-1,3-`diene has greater number of reasonating structures and delocallsed electron cloud.

Statement-I : Iodination of alkanes is carried out in the presence of iodic acid. Because Statement-II : Iodic acid removes `I_(2)` gas from the reaction mixture.

Statement-I : Propene is more reactive than ethnc with `HCl`. Because Staement-II : Propene is more stable than ethene.

The intermediate during the addition of `HCl` to propene in the presence of peroxide is :A. `CH_(3)CHCH_(4)CL`B. `CH_(3)overset(o+)CHCH_(3)`C. `CH_(3)CH_(2)overset(*)CH_(2)`D. `CH_(3)CH_(2)overset(o+)CH_(2)`

Propyne on reaction with aqueous chlorine gives-A. `1,1,2,2-`TetrachloropropaneB. `1,2-`DichloropropeneC. `1,1-`DichloropropanoneD. `2,2-`Dichloropropanone

Propyne and propene can be distinguished by `:`A. conc. `H_(2)SO_(4)`B. `Br_(2)` in `C Cl_(2)`C. `dil.KMnO_(4)`D. `AgNO_(3)` in ammonia

Following statements is/are correct about mixture :A. mixture is 3-types of oximesB. mixture is 2-types of oximesC. all are optically activeD. one is optically active

The product of acid hydrolysis of P and Q can be distinguished by A. 2,4-DNPB. Lucas reagent `(ZnCl_(2)+"conc."HCl)`C. `NaHSO_(3)`D. Fehlings solution

Any one of the product formed is : A. B. C. D.

Nitrobenzene can be prepared from benzene by using a mixture of conc. `HNO_3` and conc. In the nitrating mixture, `HNO_3` acts as a/anA. BaseB. AcidC. Reducing agentD. Catalyst

Statement-I : Chlorination of ethyl benzene with Cl_(2)` in prescence of heat and light nearly yield `1-`yield `1-`chloro`-1-`phenyl ethane as major product. Because Statement-II : The reaction oC Curs through intermediate formation of the radical `C_(6)H_(5)CH-CH_(3)`.

Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on furhter treatment with aqueous KOH yields compound F. Compound F isA. B. C. D.

Write `IUPAC` names of :

`90 mL` of oxygen is required for complete combustion of unsaturated `20mL` gaseous hydrocarbon, hydrocarbon is ?