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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 551. |
Arrange the following comounds in the increasing order densities. A. `(i) lt (ii) lt (iii) lt (iv)`B. `(i) lt (iii) lt (iv) lt (ii)`C. `(iv) lt (iii) lt (ii) lt (i)`D. `(ii) lt (iv) lt (iii) lt (i)` |
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Answer» Correct Answer - A Density is directly related to molecular mass. Higher the molecular mass, higher will be the density of the compound. Among the four given compounds, the order of molecular mass is benzene `lt` chlorobenzene `lt` dichloroene `lt` bromochlorobenzene Therefore, the increasing order of their densities are same as above. Hence, option (a) is correct. |
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| 552. |
`C CI_(4)` and freons :A. are green compounds because they are green colouredB. depletes ozones concentrationC. causes increase in ozone concentrationD. have no effect on ozone concentration |
| Answer» Correct Answer - B | |
| 553. |
In preparation of `CHCl_(3)` from ethanol and bleaching powder the latter provides .A. `CI_(2)`B. `Ca(OH)_(2)`C. both (a) and (b)D. none of these |
| Answer» Correct Answer - C | |
| 554. |
When chlroform is treated with aniline and potassium hydroxide we get:A. sweet odourB. bitter almond odourC. Very repulsive characteristic odourD. none of the aboe |
| Answer» Correct Answer - C | |
| 555. |
Chloral is :A. `C Cl_(3) CHO`B. `C Cl_(3)CH_(3)`C. `C Cl_(3) COCH_(3)`D. `C Cl_(3) CH_(2)OH` |
| Answer» Correct Answer - A | |
| 556. |
Which is the correct formula of bleaching powder ?A. `Ca(OCI)CI`B. `CaO(OCI)`C. `Ca(OCI)_(2)`D. `Ca(OCI)_(2)CI` |
| Answer» Correct Answer - A | |
| 557. |
Chloroform reacts with oxygen in the presence of light to give:A. carbon tetrachlorideB. carbonyl chlorideC. methyl chlorideD. methylenedichloride |
| Answer» Correct Answer - B | |
| 558. |
The major product formed in following reaction. A. B. C. D. |
| Answer» Correct Answer - D | |
| 559. |
The major product of the following reaction is : A. B. C. D. |
| Answer» Correct Answer - A | |
| 560. |
Which of the following is added to chloroform to slow down its aerial oxidationin presence of light ?A. Carbonyl chlorideB. Ethyl alcoholC. Sodium hydroxideD. Nitric acid |
| Answer» Correct Answer - B | |
| 561. |
`CH_(3)-Xnu^(-) to CH_(3)-Nu+X^(-)` The decreasing order of the rate of above reaction with X is 1 `Cl " " 2 F " " 3 Br " "4 I`A. `1 gt 2 gt 3 gt 4`B. `4 gt 3 gt 2 gt 1`C. `4 gt 3 gt 1 gt 2`D. `1 gt 4 gt 2 gt 3` |
| Answer» Correct Answer - C | |
| 562. |
In which of the following compounds the carbon market with asterisk is expected to have highest positive charge ?A. `.^(**)CH_(3)-CH_(2)-Cl`B. `.^(**)CH_(3)-CH_(2)-Br`C. `.^(**)CH_(3)-CH_(2)-overset(+)(M)goverset(-)(C)l`D. `.^(**)CH_(3)-CH_(2)-CH_(3)` |
| Answer» Correct Answer - A | |
| 563. |
Which of the following group has highest priority order in R-S configuration ?A. `-CH_(2)OH)`B. `-CHO`C. `-COOH`D. `CH_(2)=CH_(2)` |
| Answer» Correct Answer - C | |
| 564. |
Match the following : |
| Answer» Correct Answer - `(a-r);(b-r,s);(c-p);(d-p,q)` | |
| 565. |
Match the following : |
| Answer» Correct Answer - `(a-p,s);(b-q,r);(c-q,r);(d-p,r)` | |
| 566. |
Match the following : |
| Answer» Correct Answer - `(a-p,q);(b-q,r);(c-s);(d-p,s)` | |
| 567. |
Match the following : |
| Answer» Correct Answer - `(a-q,r);(b-q,r);(c-p);(d-s)` | |
| 568. |
Match the following : |
| Answer» Correct Answer - `(a-p,q,r);(b-q,r,s);(c-p,q,r);(d-q)` | |
| 569. |
Match the following : `{:("Column I",,"column II"),("(a) Compounds which give three dichloro derivaties",,"(p) Chlorocyclohexane"),("(b) Ethanol",,"(q) Give chloroform with bleaching powder"),("(c) Acetone",,"(r) 2-chloropropane"),("(d) Give propene on treatment with alcoholic KOH",,"(s) 1-chloropropane"):}` |
| Answer» Correct Answer - `(a-p,r,s);(b-q);(c-q);(d-r,s)` | |
| 570. |
Ethane nitrile is botain by the reaction of followingA. `CH_(3)Br+KCN`B. `C_(2)H_(5)Br+KCN`C. `CH_(3)Br+AgCN`D. `C_(2)H_(5)Br+AgCN` |
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Answer» Correct Answer - A `CH_(3)Br+KCN ot CH_(3) CN+KBr` |
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| 571. |
What happens when `CH_(3)-Br` is treated with KCN? |
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Answer» Methyl cyanide is formed. `CH_(3)-Br+KCNtoCH_(3)C-=N+KB r` |
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| 572. |
The maine product of the reaction of `CH_(3)CH_(2)Br and KCN` isA. `CH_(3)CH_(2)CN`B. `CH_(3)CH_(2)NC`C. `CH_(3)CH_(2)COOH`D. `C_(2)H_(6)` |
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Answer» Correct Answer - A `CH_(3)CH_(2)+Br+KCn to CH_(3) CH_(2)CN+KBr` |
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| 573. |
Which of the following molecules has highest dipole moment?A. `CH_3Cl`B. `CH_2Cl_2`C. `CHCl_3`D. `CCl_3` |
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Answer» Correct Answer - A Order of dipole moment is : `CH_3Cl gt CH_2Cl_2 gt CHCl_3 gt C Cl_4` |
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| 574. |
Write structure of the compound : 1,4-Dibromobut-2-ene |
| Answer» `BrCH_(2) CH= CH CH_(2) Br` | |
| 575. |
Among the following molecules the one with highest dipole moment is:A. `CH_(3)Cl`B. `CH_(2)Cl_(2)`C. `CHCl_(3)`D. `C Cl_(4)` |
| Answer» Correct Answer - A | |
| 576. |
Which one of the following has highest dipole moment ? (i) `CH_(2) Cl_(2) " " (ii) CH Cl_(3) " " (iii) C Cl_(4)` |
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Answer» `CH_(2) Cl_(2)` has high dipole moment (`mu = 1.62 D`) among the three alkyl halides . Reason : The total of two `C - Cl` dipole moments is reinforced by the total of two `C-H` bonds . `to C Cl_(4)` has zero dipole moment `, CH Cl_(3)` has 1.03 D dipole moment due to presence of C-H bond . |
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| 577. |
The product of the above reaction is :A. B. C. D. |
| Answer» Correct Answer - D | |
| 578. |
Discuss the physical properties of haloalkanes . |
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Answer» Physical properties of halo alkanes : 1) Pure alkyl halides are colourless . Bromides and iodides exhibits colour when exposed to light . 2) Most of volatile halogen compounds have sweet smell . 3) Lower members of alkyl halides are gases and higher members are liquids (or ) solids . 4) The boiling points of chlorides , bromides and iodides are higher than those of hydrocarbons. 5) The boiling points of alkyl halides decrease as follows `RI gt RBr gt RCl gt RF`. 6) In case of isomeric halo alkanes boiling points decrease with increase in branching . 7) The density of halo alkane increase with increase in no. of carbon atoms , halogen atoms and atomic mass of the halogen atoms . 8) Halo alkanes have the tendency to dissolve in organic solvents and are very slightly soluble in water . |
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| 579. |
The position least nitrated when m-bromochlorobenzene is nitrated is :A. position ortho to bromineB. position ortho to chlorineC. position ortho to bromine and chlorineD. position meta to chlorine |
| Answer» Correct Answer - D | |
| 580. |
In halides, halogen atom is attached toA. `sp^(3)` hybridised carbon atomB. `sp^(2)` hybridised carbon atomC. sp hybridised carbon atomD. sp-d hybridised carbon atom |
| Answer» Correct Answer - B | |
| 581. |
Write the structures of the compounds (i) 2-chloro-3-methylpentan |
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Answer» 2-chloro-3-methyl pentane Structure : `underset(1)(C)H_(3) - underset(2) overset(Cl)overset(|)(C)H- underset(3) overset(CH_(3))overset(|)(C)H-underset(4)(C)H_(2)- underset(5)(C)H_(3)` |
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| 582. |
Give the IUPAC names of the compound `ClCH_(2) CH = CH CH_(2) Br` |
| Answer» `Cl CH_(2) CH = CH CH_(2) Br to {:(Cl - CH_(4) - CH = CH - CH_(2) - Br) , (" "(4) " " (3) " " (2) " " (1)) , ("IUPAC name : 1 - Bromo 4-Chloro , 2- Butene"):}` | |
| 583. |
Give the IUPAC names of the compound `CH_(3)CH(Cl) CH(I) CH_(3)` |
| Answer» `CH_(3) CH (Cl) CH(I) CH_(3) to {:(" "Cl " " I ) , ( " "| " " " "|) , (CH_(3) - CH - CH - CH_(3)) , ((1) " " (2) " " (3) " " (4)) , ("IUPAC name : 2-Chloro 3-Iodo Butane"):}` | |
| 584. |
Following compound is named as A. 4-hydroxy chlorobenzeneB. 4-chlorobenzylalcoholC. 4-chlorophenolD. 1-hydroxy -4-chlorobenzene |
| Answer» Correct Answer - C | |
| 585. |
`CH_(3)-CH_(2)-underset(CI)underset(|)CH-CH_(3)` obtained by chlorination of n- butane will be :A. meso formB. racemic mixtureC. d-formD. l-form |
| Answer» Correct Answer - B | |
| 586. |
Following compound can be named as A. phenyldichloroethaneB. methylenedichloridebenzeneC. 1-phenyl -1, -1-dichloromethaneD. benzalchloride |
| Answer» Correct Answer - C | |
| 587. |
Give IUPAC names of the following compounds : |
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Answer» (a) Chlorophenylmethane (b) 1-Bromo-3- phenylpropane (c) 1,1-Dichloro-2-phenylethane (d) 3-Chlorotoluene (e) Trichlorophenylmethane (f) 1-Bromo-3-chlorobenzen (g) 2-Chloro-2-phenylbutane (h) 1,4-Dichlorobenzene (i) 4-Bromo-1,1-dibromo-1-phenylmethane (j) 3-Bromo-1-phenylpropene |
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| 588. |
Give the IUPAC names of the following compounds: `(a) (CH_(3))_(3)C-CI" "(b) CH_(3)-underset(C_(2)H_(5))underset(|)CH-CH_(2)CI` `(c)H_(2)c=CH-underset(C_(2)H_(5))underset(|)CH-underset(CI)underset(|)C=CH_(2)` `(d)CH-overset(C_(2)H_(5))overset(|)underset(CI)underset(|)C-CH_(2)-overset(C_(2)H_(5))overset(|)underset(Br)underset(|)C-CH_(3)` `(e)(CH_(3))_(3)C-CH_(2)-CH_(2)CI` `(f) (CH_(3))_(3) C-underset(CH_(3))underset(|)CH-underset(I)underset(|)CH-CH_(2)CH_(3)` `(g) CH_(3)-overset(C_(2)H_(5))overset(|)underset(F)underset(|)C-CH_(2)-overset(C_(2)H_(5))overset(|)underset(CI)underset(|)C-CH_(3)` `(h) HC-=C-CH_(2)-CH=CHCI` `(i) BrCH_(2) -CH_(2) -CH_(2) -CH_(2)CI` `(j) CH_(3) -C -=C-underset(CI)underset(|)CH-CH_(3)` `(k) (C_(2)H_(5))_(3)C-CI` `(l)CH_(3)CH_(2)-overset(CH_(3))overset(|)underset(Br)underset(|)C-underset(Br)underset(|)CHCH_(2)CI " "(m) HC-=C-CH_(2)Br` |
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Answer» (a) 2-Chloro-2-methylpropane (b) 1-Chloro-2-methylbutane (C) 2-Chloro-3-ethylpenta-1,4-diene (d)3-Bromo-5-chloro-3,5-dimethylheptane (e) 1-Chloro-3,3-dimethylbutane (f) 4-Iodo-2,2,3-trimethylhexane (g) 3-Chloro-5-fluoro-3,5-dimethylheptane (h) 1-Chloropent-1-en-4-yne (i)1-Bromo-4-chlorobutane (j)4-Chloro-pent -2-yen (k) 3-Chloro-3-ethylpentane (l)2,3-Dibromo-1-chloro-3-methylpentane (m)3-Bromoprop -1-ene (n)1-Bromobut -2-ene (o) 4-bromopent-2-ene (p)1-Bromo-2-methylbut -2-ene (q)4-Bromo-3-methylpent-2-ene (r) 3-Bromo-2-methylbut-1-ene (s) 3-Bromo-2-methylpropene |
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| 589. |
In the reaction : `R-Br+CI^(-) to R -CI+Br^(-)` The rates of reaction of ethyl bromide (I) n-propyl bromide (II) isobutyl bromide (III) and neopentyl bromide (IV) follow the order:A. `IV gt III gt II gt I`B. `I gt II gt III gt IV`C. `I gt III gt II gt IV`D. `III gt II gt IV gt I` |
| Answer» Correct Answer - B | |
| 590. |
IUPAC name of following compounds A. 1-bromo-4-chlorobenzeneB. 1-chloro-4-brombenzeneC. o-bromo p-chlorobenzeneD. p-bromo o-chlorobenzene |
| Answer» Correct Answer - A | |
| 591. |
IUPAC name of following compounds A. 3-chloro- 1-phenylpropeneB. 1-chloro-3-phenylpropaneC. 1-chloropropylbenzeneD. 2-chloropropylbenzene |
| Answer» Correct Answer - A | |
| 592. |
IUPAC name of isobutyl halide isA. 2-halopropaneB. 2-halo-2-methylpropaneC. 1-halo-2-methylpropaneD. 2-halobutane |
| Answer» Correct Answer - C | |
| 593. |
Bromination of 2-Methylpropane (siobutane) in the presence of light can give two monobromo products. Give their structures. |
| Answer» `CH_(3)-underset(CH_(3))underset(|)(C)H-CH_(2)Br,CH_(3)-underset(CH_(3))underset(|)overset(Br)overset(|)(C)-CH_(3)`. | |
| 594. |
The IUPAC name of the compound A. 1-fluoro-4-methyl-2-nitrobenzeneB. 4-fluoro-1-methyl-3- nitrobenzeneC. 4-methyl-1-fluoro-2-nitrobenzeneD. 2-fluoro-5-methyl-1 nitrobenzene |
| Answer» Correct Answer - D | |
| 595. |
Bromination of methane in presence of sunlight is aA. nucleophilic substitutionB. free radical substitutionC. electrophilic substitutionD. nucleophilic addition |
| Answer» Correct Answer - B | |
| 596. |
Match the column I with column II and mark the appropriate choice. A. `(A)to(ii),(B)to(iii),( C)to(i),(D)to(iv)`B. `(A)to(iv),(B)to(iii),( C)to(ii),(D)to(i)`C. `(A)to(i),(B)to(ii),( C)to(iii),(D)to(iv)`D. `(A)to(iii),(B)to(i),( C)to(iv),(D)to(ii)` |
| Answer» Correct Answer - D | |
| 597. |
Match the column I with column II and mark the appropriate choice. A. `(A)to(iv),(B)to(iii),(C )to(i),(D)to(ii)`B. `(A)to(iv),(B)to(iii),(C )to(ii),(D)to(i)`C. `(A)to(iii),(B)to(iv),(C )to(i),(D)to(ii)`D. `(A)to(iii),(B)to(iv),(C )to(ii),(D)to(i)` |
| Answer» Correct Answer - A | |
| 598. |
Match the reactions given in column I with the type of reaction mentioned in column II and mark the appropriate choice A. `(A)to(iv),(B)to(i),(C )to(ii),(D)to(iii)`B. `(A)to(ii),(B)to(iii),( C)to(iv),(D)to(i)`C. `(A)to(i),(B)to(ii),( C)to(iv),(D)to(iii)`D. `(A)to(iii),(B)to(i),(C )to(ii),(D)to(iv)` |
| Answer» Correct Answer - B | |
| 599. |
Match the isomers given in column I with their names given in column II and mark the appropriate choice. A. `(A)to(iii),(B)to(i),( C)to(iv),(D)to(ii)`B. `(A)to(iv),(B)to(iii),( C)to(ii),(D)to(i)`C. `(A)to(i),(B)to(ii),( C)to(iii),(D)to(iv)`D. `(A)to(ii),(B)to(iii),( C)to(iv),(D)to(i)` |
| Answer» Correct Answer - D | |
| 600. |
Match the column I with column II and mark the appropriate choice. A. `(A)to(i),(B)to(ii),( C)to(iv),(D)to(iii)`B. `(A)to(ii),(B)to(iii),( C)to(i),(D)to(iv)`C. `(A)to(iii),(B)to(iv),( C)to(ii),(D)to(i)`D. `(A)to(iv),(B)to(i),( C)to(iii),(D)to(ii)` |
| Answer» Correct Answer - B | |