Explore topic-wise InterviewSolutions in Current Affairs.

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1.

CH_(3)-underset(OH)underset(|)CH-underset(OH)underset(|)CH-CH_(2)-CH_(3) number of optical isomers possible for this compound is

Answer»


SOLUTION :`2^(2)=4`
Discussion
2.

CH_3-underset(OH)underset(|)CH-CH_2-CH_3 overset(Conc. H_2SO_4)to " Product(I) + Product(II)" What is not true regarding the products ?

Answer»

PRODUCT-I and II are POSITION isomers
Product-I and II contains the same NUMBER of `sp^(3) and sp^2` carbon atoms
The yield of the product I and II is same
Reaction obeys Saytzeff rule

Solution :Dehydration of 2-butanol LEADS to the formation of
i) But-1-ene ii) Cis-but-2-ene (or) (Z)-but-2-ene
iii) Trans-but-2-ene (or) (E)-but-2-ene
Discussion
3.

CH_(3)-underset(OH)underset(|)(C)H-C-=C-underset(OH)underset(|)(C)H-CH_(3) Total no. of streoisomers of the product when (X) is reduce by Na/lilq. NH_(3) (Birch reduction) of 'A' with CH_(3)MgBr.

Answer»


ANSWER :3
Discussion
4.

CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-H+C Cl_(4)overset(R_(2)O_(2))to(P)+(Q) major product (P) and (Q) will be:

Answer»

`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CL`
`CHCl_(3)`
Both (A) and (B)
NONE of these

Answer :C
Discussion
5.

CH_3 - underset(CH_3)underset(|)overset(CH_3)overset(|)C-CH_2Br, the IUPAC name of this compound is ……………………… .

Answer»

SOLUTION :1-Bromo-2, 20dimethylpropane
Discussion
6.

CH_(3)-underset(CH_(3))underset(|)(C)H-CH_(2)-underset(CH_(3))underset(|)(C)H-CH_(2)-CH_(3)underset(800^(@)C)overset(Cr_(2)O_(3)//Al_(2)O_(3))to Find the X.

Answer»

`CH_(3)-UNDERSET(CH_(3))underset(|)OVERSET(CH_(3))overset(|)(C)-C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)H_(2)-CH_(3)`
`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)H_(2)-CH_(3)`

Answer :C
Discussion
7.

CH_3-underset(CH_3)underset(|)CH-CH_2-underset(CH_3)underset(|)CH-CH_2-CH_2-CH_3 underset(800^(@)C)overset(Cr_2O_3// Al_2O_3)to Find the product 'X'.

Answer»

`CH_3-UNDERSET(CH_3)underset(|)OVERSET(CH_3)overset(|)C-underset(CH_3)underset(|)overset(CH_3)overset(|)C-CH-2-CH_3`
`CH_3-underset(CH_3)underset(|)overset(CH_3)overset(|)C-CH_2-underset(CH_3)underset(|)overset(CH_3)overset(|)C-CH_3`

SOLUTION :AROMATISATION
Discussion
8.

CH_3- underset(CH_3)underset(|)C=CH_2 + HCl overset((C_6H_5CO)_2O_2)to X (major) here 'X' is

Answer»

`(CH_3)_2C(CL)-CH_3`
`(CH_3)_2 CHCH_2Cl`
`ClCH-2-underset(CH_2Cl)underset(|)(CH)-CH_3`
`CH_3-underset(CH_2Cl)underset(|)overset(Cl)overset(|)C-CH_3`

Solution :`CH_3-underset(CH_3)underset(|)C=CH_2 + H - Cl to CH_3 - underset(CH_3)underset(|)overset(Cl)overset(|)C - CH_3`
Discussion
9.

CH_(3)-underset(CH_(3))underset(|)(C)=CH_(2)+HBroverset((C_(6)H_(5)CO)_(2)O_(2))rarr Products Here the major product of the above reaction is

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`(CH_(3))_(2)CBrCH_(3)`
`(CH_(3))_(2)CHCH_(2)Br`
`BrCH=overset(CH_(3))overset(|)(C )-CH_(3)`
`CH_(3)-overset(CHBR)overset("|")(CH)=CH_(2)`

ANSWER :B
Discussion
10.

CH_3 - underset(CH_3)underset(|)C=CH-CH_3 overset(NaIO_4 // OsO_4)to Product are

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VIE DIOL
vie dicarbonyl COMPOUND
`CH_3-UNDERSET(O)underset(||)C-CH_3and CH_3CHO`
none these

Solution :
Discussion
11.

CH_(3)-underset(C_(2)H_(5))underset(|)overset(H)overset(|)C-underset(CH_(3))underset(|)overset(C_(4)H_(9))overset(|)C-CH_(3)is............

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3,4,4-Trimethylheptane
2-Ethyl-3,3-dimethyl heptane
3,4,4-Trimethyloctane
2-Butyl-2-methyl-3-ethyl-butanr.

Answer :C
Discussion
12.

Write the IUPAC name of the CH_(3)-underset(CH_(3))underset(|)CH-underset(OH)underset(|)CH-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3) compound.

Answer»

`CH_(3)-overset(OH)overset(|)CH-overset(OH)overset(|)CH-Ph`
`H-overset(O)overset(||)C-CH_(2)-overset(OH)overset(|)CH-Ph`
`CH_(3)-underset(OH)underset(|)CH-underset(O)underset(||)C-Ph`
`CH_(3)-underset(O)underset(||)C-underset(O)underset(||)C-Ph`

SOLUTION :`CH_(3)-underset((I))overset(O)overset(||)C-overset(OH)overset(|)OH overset(OH^(-))iffCH_(3)-underset(OH)underset(|)CH-underset(O)underset(||)C-Ph`
Discussion
13.

CH_(3) - overset(O)overset(||)(C) - H and Ph-overset(O)overset(||)(C)-H can be differentiated by :

Answer»

Tollen's REAGENT
FEHLING's SOLUTION
Lucas reagent
Victor MEYER's test

Answer :B
Discussion
14.

CH_3- overset(CH_3)overset(|)CH_3 - CH_2 - underset(CH_3)underset(|)N-CH_2-CH_2-CH_3 underset("Moist " Ag_2O, Delta)overset("Excess" CH_3I)to"Mixture of two alkenes" overset(O_3// Zn-H_2O)to "Final product mixture " The final product mixture contains

Answer»

`CH_3CHO + CH_3COCH_3`
`2CH_3CHO+ CH_3COCH_3 + HCHO`
`2CH_3 CHO + HCHO`
`CH_3CHO + CH_3COCH_3 + 2HCHO`

Solution :Alkene FORMED as `CH_3-UNDERSET(CH_3)underset(|)C=CH_2 & CH2= CH - CH3` and product formed on ozonolysis are `CH_3 CHO + CH_3COCH_3 + 2HCHO`
Discussion
15.

CH_(3)-overset(CH_(3))overset(|)(CH)-CH_(2)-CH_(3)+Br_(2)overset(hupsilon)rarr Major organic product of the reaction is

Answer»

`CH_(3)-UNDERSET(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-Br`
`CH_(3)-underset(CH_(3))underset(|)(CH)-CHBr-CH_(3)`
`CH_(3)-underset(CH_(3))underset(|)(CBr)-CH_(2)-CH_(3)`
`CH_(2)Br-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)`

ANSWER :C
Discussion
16.

CH_3-overset(CH_3)overset(|)CH-C -= CH overset("Excess" HBr)to A. A is

Answer»

`CH_3-OVERSET(CH_3)overset(|)CH-C overset(BR)overset(|)H-C overset(Br)overset(|)H_2`
`CH_3-overset(CH_3)overset(|)CH-C overset(Br)overset(|)CH= CH_2`
`CH_3-overset(CH_3)overset(|)CH-UNDERSET(Br)underset(|)overset(Br)overset(|)C-CH_3`

SOLUTION :
Discussion
17.

CH_(3)-overset(CH_(3))overset(|)(C )H-CH_(2)-CH3overset(Cl_(2))underset(UV "light")(to)underset("Major")((A)), the compound 'A' is

Answer»

`CH_(3)-OVERSET(CH_(3))overset(|)(C )H-underset(Cl)underset(|)(CH_(2))-CH_(3)`
`CH_(3)-overset(CH_(3))overset(|)underset(Cl)underset(|)(C )-CH_(2)-CH_(3)`
`CH_(3)-overset(CH_(3))overset(|)(C )H-CH_(2)-CH_(2)Cl`
`CH_(3)-overset(CH_(2)Cl)overset(|)underset(H)underset(|)(C )-CH_(2)-CH_(3)`

Answer :A::B::C::D
Discussion
18.

CH_3 - overset(CH_3)overset(|)C = CH-CH_3 overset(Hg(OAc)_2 // EtOH)to underset((90%))((A)).

Answer»




SOLUTION :
Discussion
19.

CH_(3)-CHO overset(LiAIH_(4))to A overset(PCl_(3))to B.Then 'B' is

Answer»

ETHYL alcohol
Acetic acid
Ethyl chloride
Acetaldehyde

Answer :3
Discussion
20.

CH_(3)-CH=CH_(2) underset("Peroxide")overset("HBr")to The above reaction undergoes

Answer»

ELECTROPHILIC substitution
Nucleophilic substitution
Markovnikoff's ADDITION
Anti-Markovnikoff's addition

Solution :Anti-Markovnikoff's addition
Discussion
21.

CH_(3)-CH=CH_(2)+HIrarr'X'. Here product 'X' is

Answer»

`CH_(3)CH_(2)CH_(2)I`
`CH_(3)-CHI-CH_(3)`
`CH_(3)CH_(2)CH_(3)`
`CI_(3)-CH_(2)-CI_(3)`

Answer :B
Discussion
22.

CH_(3)-CH=CH_(2)+HBrto………………..(Major product)

Answer»

Solution :(i)`C_(6)H_(6)` Or

(II) `CH_(3)-UNDERSET(Br)underset(|)(CH)-(CH_(3))`
Discussion
23.

CH_(3)-CH=CH-underset(OH)underset(|)CH-underset(OH)underset(|)CH-CH_(3) number of racemic mixtures possible for the above compound are

Answer»


SOLUTION :4 RACEMIC MIXTURES
Discussion
24.

CH_(3)-CH=CH-CH_(3)overset(KMnO_(4)//H^(+))rarr product in this reaction

Answer»

`CH_(3)-UNDERSET(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH_(3)`
`2CH_(3)CHO`
`2CH_(3)COOH`
`CH_(3)CHO+CH_(3)COOH`

ANSWER :C
Discussion
25.

CH_(3)-CH=C=C=CH-CH_(3) How many geometrical isomers of this triene are possible _____________

Answer»


Solution :ALLENE with ODD no of `pi` BONDS, GI are possible.
Discussion
26.

CH_(3)-CH_(3)+Cl_(2)overset(U.V.Light)rarrCH_(3)-CH_(2)Cl+HCl Above reaction involves

Answer»

FORMATION of Cl - Cl BOND
Breaking of Cl - Cl bond
Breaking of C - C bond
Formation of C - Cl bond

Answer :D
Discussion
27.

CH_3-CH_3+Cl_2 overset("U.V.Light")rarr CH_3-CH_2Cl+HCl Above reaction involves

Answer»

Formation of Cl - Cl bond
BREAKING of Cl - Cl bond
Breaking of C - C bond
Formation of C - Cl bot1d

SOLUTION : Hydrogebn atom is SUBSTITUTED by chlorine atom
Discussion
28.

CH_(3)-CH_(2)Cloverset("alcoholic KOH")rarrA Compound Aoverset(Br_(2))rarrB. Compound Bunderset(Delta)overset(Zn)rarrC. Compound C is

Answer»

ACETYLENE
ETHANE
ETHENE
Methane

Answer :C
Discussion
29.

CH_3-CH_2-undersetunderset(CH_3)(|)oversetoverset(Cl)(|)C-CH_2-CH_3overset(80% EtOH)to What is/are true about above reaction ?

Answer»

Major PRODUCT is given by `S_N1` reaction.
Through E1 mechanism 3 alkenes are FORMED.
3-Methylpentan-3-ol is also formed as one of the product
FRACTIONAL DISTILLATION of elimination products will give two fractions.

Answer :A::B::C
Discussion
30.

CH_(3) -CH_(2)-CO-overset(CN)overset(|)(CH)-COOH The IUPAC name of the compound is

Answer»

3 - Ketonic - 2 - CYANO pentanoic ACID
cyanoketohexanoic acid
3 - OXO - 2 - cyano pentanoic acid
2 - cyano - 3 - oxo - pentanoic acid

Answer :D
Discussion
31.

CH_(3)-CH_(2)-CHO and CH_(3)-underset(O)underset(||)C-CH_(3) are called ............ .

Answer»

SOLUTION :FUNCTIONAL ISOMERS
Discussion
32.

CH_(3)-CH_(2)-CH=CH-CH_(3)+O_(3)underset("Zn")overset(H_(2)O)rarr

Answer»

`CH_(3)CH_(2)CHO & CH_(3)CHO`, each ONE mole
TWO MOLES of `CH_(3)CH_(2)CHO`
Two moles of `CH_(3)CHO`
`CH_(3)-CH_(2)-CH-CH=CH_(3)`

ANSWER :A
Discussion
33.

CH_3-CH_2-CH_3 underset(Delta)overset(CH_2N_2)to underset("(major)")(A) Product (A) is :

Answer»

`CH_3-UNDERSET(CH_3)underset(|)CH-CH_3`
`CH_3-CH_2-CH_2-CH_3`
EQUIMOLAR mixture of a & B
n-pentane

Solution :C - H INSERTIONS
Discussion
34.

CH_(3)-CH_(2)-CH_(2)Cloverset(alc.KOH)rarrX CH-=CH+H_(2)overset(Pd+BaSO_(4))rarrY Here, in the above sequences, the final products 'X' and 'Y'

Answer»

are a pair of homologues
have the same PERCENTAGE composition
have the same EMPIRICAL FORMULA
All the above

Answer :D
Discussion
35.

CH_3 - CH_2 - CH_2 - CH_3 underset(Delta)overset(AlCl_3)to CH_3 - underset(CH_3)underset(|)CH-CH_3 Above reaction is an example of :

Answer»

ISOMERIZATION
POLYMERIZATION
CRACKING
de-hydrogenation

SOLUTION :Isomerisition
Discussion
36.

CH_(3)-CH_(2)-CH_(2)-CH_(3)overset(Br_(2)//hv)to Monobromo derivative. Major product in the above reaction is:

Answer»

Recemic MIXTURE
Meso
Diastereomers
Constitutional isomers.

Answer :A
Discussion
37.

CH_3-CH_2-CH_2-CH_3+Cl_2overset(hv)to Major product :

Answer»

`CH_3-CH_2-CH_2-CH_2+CL`
`CH_3-undersetunderset(Cl)(|)CH-CH_2-CH_3`
`CH_3-undersetunderset(CH_3)(|)CH-CH_2-Cl`
`CH_3-undersetunderset(CH_3)(|)oversetoverset(Cl)(|)C-CH_3`

ANSWER :B
Discussion
38.

CH_3 - CH_2-CH_2 -C -= CH underset(THF)overset(BH_3)to underset(OH^(-))overset(H_2O_2)to Identify the product

Answer»

`CH_3 - CH_2 - CH_2 - CH_2 -CHO`
`CH_3 -CH_2 - CH_2 - OVERSET(O)overset(||)C-CH_3`
`CH_3-CH_2 - CH_2 - CHO`
`CH_3-CH_2 - overset(O)overset(||)C-CH_2-CH_3 `

SOLUTION :
Discussion
39.

CH_(3) - CH_(2) - CH - overset(overset(CH(CH_(3))_(2))(|))(CH) - underset(underset(H_(3)C- CH- CH_(2) - CH_(3))(|))(CH) - CH_(2) - CH_(2) - CH_(2) - CH_(2) - CH_(3) Which IUPAC name is write from these name 5-sec-Butyl-4-isopropyldecane and 4-isopropyl-5-(1-methylpropyl) Decane?

Answer»

SOLUTION :Both IUPAC name are right but in bracket name the PROPYL is WRITTEN after methyl
Discussion
40.

CH_(3)-CH_(2)-Br overset(KCN) to X underset(Delta)overset("dil. HCl")to Z Z is______

Answer»

`CH_(3)CH_(2)COOH`
`CH_(3)COOH`
`CH_(3)COCL`
`CH_(3)CONH_(2)`

SOLUTION :`CH_(3)CH_(2)COOH`
Discussion
41.

CH_3 - CH =undersetoverset(|)( C)(C ) - undersetoverset(|)(C )(C )= CH - CH_3Number of geometrical isomers possible for this compound are

Answer»


SOLUTION :TWO DOUBLE BONDS. `2^2 = 4`
Discussion
42.

CH_3 -CH = CH_2 underset((2)CH_3CO_2 T)overset((1)THF , BD_2)to (A) , Product A of the above reaction is

Answer»

`CH_3-CHD - CH_2D`
`CH_3 - CHT - CH_2T`
`CH_3-CHD - CH_2T`
`CH_3 - CHT - CH_2D`

SOLUTION :`CH_3 - CHD - CH_2T`
Discussion
43.

CH_3 - CH = CH - undersetoverset(|)(OH)(C )H - undersetoverset(|)(OH)(C )H - CH_3number of streoisomers are

Answer»


SOLUTION :8
Discussion
44.

CH_(3)-CH= CH-CH_(3)+ Br_(2) to CH_(3)-underset(Br)underset(|)CH-underset(Br)underset(|)CH-CH_(3) is an

Answer»

Substitution reaction
ELIMINATION reaction
Electrophilic ADDITION reaction
NUCLEOPHILIC addition reaction

SOLUTION :N/A
Discussion
45.

CH_(3)-CH=C=CH-CH_(3) The possible number of geometrical isomers of this diene is_________

Answer»


Solution :ALLENE with even no of `PI`bonds . GIare not POSSIBLE
Discussion
46.

CH_3- CH = C = C = CH_2How many geometrical isomers of this triene are possible_____

Answer»


SOLUTION :ALLENE with ODD no of `PI` bonds , GI are possible
Discussion
47.

CH_(3)-C=Chunderset(333k)overset(Hg^(2+)//H^(+))rarr X. identify the X

Answer»

PROPANE
ACETONE
acetaldehyfde
FORMALDEHYDE

ANSWER :B
Discussion
48.

CH_3-C -= underset(2000^(@) C ) overset("Red hot Cu")to X. The no. of structural isomers of X is are

Answer»


SOLUTION :
Discussion
49.

CH_(3)-C -=CMgBr can be prepared by the reaction of

Answer»

`CH_(3)-C -=C—Br` with `MgBr_(2)`
`CH_(3)-C -=CH` with `MgBr_(2)`
`CH_(3)-C -=CH`with KBr and Mg METAL
`CH_(3)-C -=CH` with `CH_(3)MGBR`

SOLUTION :
Discussion
50.

CH_3-C-=C-CH_3 underset((ii)H_2O //Zn)overset((i)X)to CH_3-undersetunderset(O)(||)C-undersetunderset(O)(||)C-CH_3 X is

Answer»

`HNO_3`
`O_2`
`O_3`
`KMnO_4`

ANSWER :C
Discussion