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19 views4 pagesMdact 2
MDCAT PAPER
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bilalshahzad238Copyright
© © All Rights Reserved
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/ 4
158
*
(AVC -C- Cale (Byct-EH— cr
Cas
+ *
(C) CH; — pret (D) CH, — CH: - CH»
CHs
19. Chlorine gas is exposed to ultraviolet light in =
‘losed container. The reactive species expected to
be formed are:
(ayer act
oct yet
20. Which of the following i not planar?
(A) ter-Bury! fee radical (B) tet-Butyt carbocation
(C)tex-Buyl carbanion () ally aon
ermediate has the
21. Which-of the following
complete octet around the carbon atom?
(A) Free radical (B) Carbanion
(C)Cartene (D) Carbonium ion
22. If two compounds have the same empirical
formals but different molecular formula, they
must have:
(A) Different percemage composition
(B) Different molecular weights
(C) Same velocity
(D) Same vapour density
23. The sumber of o- and x-bonds in |-Butene-3-yne
is
(A) Sand 5x (B) a and2x'
(C) 70 and 3 x (D)6oand4n
24. Which of the following compounds has isopropyl
group?
(A) 2,2,3,3-Tewamethylpertane
(B) 2.2-Dimethylpertane
(©) 22.3-Trimethylpentane
(D) 2-Methylpentane
25, Which group is always taken a3.» substituent in
the IUPAC system of nomenclature?
(A}-NO: ®)c-o
(C)-Can (D) -NH
26, Which of the following is not the aame of CH\NC?
(A)Methy| isocyanide (B) Aceto isonitrile
(C) Methyl carbylamine (1D) Acetonitrile
‘Which of the following has only 1*and 2°C atoms?
(A) 2-Methy butane
(B) Butane
(C)2,2-Dimethylburane
(D) 2,2,3,3-Tetramethy pentane
28, The clads of compounds that does not have sp?
2.
(8) Carboxylic acids
(D) Acid amides
31.
ca
uM
35.
39.
40.
18 The ‘Unit 13 (Fundamental Principles of Organle Chojn)
‘most stable carbonium ion is: 29. Which one of the following pairs represents
ofelectrophiles?:
(A) Br’ and = CCl (B) H* and HO
(©) ALCL and Br (D) Cl: and NH,
In which of the following species the cent)
carbon atom is neatly charged?
(A) Carbanion (8) Carbonium ion
(€) Carbocation (D) Free radicals
Which of the following contains three pairs
electrons?
(A) Carbanion (B) Free radical
(C) Carbocation (D)None of these
Which of the following is not a nucleophile?
(A)OH- (B) HSO3
(C) NH (D)CH;OH
In which of the following reaction prod
always structural isomer of original compou
(A) Addition reaction
(B) Substitution reaction:
(C) Rearrangement reaction
{D) Elimination reaction
‘Methyl carbanion is iso-clectronie with:
(A) CHe (B) CHS
(CCH (D) CH;
‘The cause of cis-trans isomerism is:
(A) Strength of the double bond
(B) Stability of the double bond
(C) Vibration of the double bond
(D) Lack of rotation of the double band
Cis-trans isomerism occurs when
(A) A branched alkane has a halogen added to two
adjacent carbon atoms
(B) Hydrogen isadded to both ofthe carbon atoms in
adouble bond
(C) The carbons in an alkene double bond each have
two different substituent groups
(D) The carbons in the para position of an aromatic
have the same substituent groups
Which molecule can have cis-trans isomers?
(A}(CH3)C = CHCHs —(B) (CHssC = C(CHs):
(C) CH CH = CHE (D).CHSCH = C(CHsb
Which of the following compounds will sio™
metamerism?
(A) CHs-0-CiH, (B) CH,-CO-GiHs
(C) CHs-O-CH, (D) GHs-S-CHs
The total number of isomers for Calls i:
(AB (B)6
«C7 (D)5
‘The number of structural isomers for Gai is:
(A) 6 (B)4
«as (D)3 50
ry
Wt eagents to effect the elestrophine pa, {eo OF |S. The compousd wiih an atom which bas wushared
aroma rine iodination ofan pelrafetrons halal at
(A) bs HNOs (B) KI, sceton, (A) Nucleophile (B) Protophile i
oa ne the 2) KLHNO; % (© Ete Cope eft SS os 1
following the strongest -Chloropropal A pro {
op caisH @)cHcogt he: isomers fo each other, the type of fzomerism in \
CHINE: he these two la called: 2
i rigs NOC é (A) Cisetrans isomerism
gin whieh following cases is isomerism (B) Chain isomerism
mer (C) Position isomerism
(A) Galt, () GH, {D) Functional group isomerism |
(CHO (D) Allof these ‘S4. Ethene on polymerization, gives the product
4 In which type of isomerism iy dynamic polyethene, this reaction may be called as: |
equilibrium is established between the isomers? (A) Addition (B) Substitution
(2) Metamerism (C) Condensation (D) Pyrolysis
(B) Tauomerism ‘55. _ In the following, which one is free radical?
{C) Geometrical isomerism (ayce Ch
{D) Optical isomerism 3
45 Alcohols with molecular formula CHO are|, (C)Ct mye
isomeric with: 56. Which of the following exhibits cis-trans isomers?
(A) Acids (B) Esters Hic H He H
(Cy Ethers (D) Aldehydes AY ee, B® cf
44 The (ppes of isomerism possible with molecular ” CH Hse Hs
formula CaHiwO ifn HC. cH HOH
(A) Functional isomerism (B) Metamarism © yet mm Seek
(C)Position isomerism — (D) All of these Hy H H CH
| 41, Which of the following is not a nucleophile? a, tee ae nucleophile from the | following
2 examples:
(A)NHs (B) R-Q-R (A)NO: (B)NO}
7 (CNH (Dy NH}
oH (D) Atchy
wo = ‘SS. Which one of the following pair of compounds is
9 ‘Which of the following is mot a electrophite? is and trans isomers of each other?
(ajcn (8) NO} yr eh
(CBF; «D) ALC eo Ng Sy
|B Which ome of the following series contains | « an
electrophiles only? . Br, ceo gy
| (A)HLO, SOs, HyO" ——(B) SOs, ALCL, NO} By Senet Seael
gq CON HHO, Alls {D)H10, CL, NH eo ow 4
CH, CH, H, H
© Ycac’ Nene’
gore aes
Hl Hoo OOH
ct
Lo ae i ”
wm cay wy Py" Jom on
(AIMS I>tv>11 | (ByIV> I> I> 1 cH oH, cH) oH,
i (C)I>1> > 1V (D) I> > IV>1V SH on &
L 1s 2
ao of "the following is an ambient), iin one of the following ‘ls a powerful
hile? electrophile used to attack on the electrons of
(A) soz- (B) CH: benzene ring?
(cn (D) #20 (A) FeCl (Byce
(©) Fett, @)ch 61.
6.
"Which one of the following pairs can be cis-trans
isomer to each otber?
(A) CHCE=CCts and CH=CH
(B) CHCL=CH: and CHsCHCL
(C)Clis-CH=CH-CH, and HyC-CH=CH- CH
(D) CHy-CHy and CH=CH
‘The TUPAC name of following compound
‘OH
om
{Ay Mathyleyclopentan-2-0l
(By B-methyleyelopentyt aleahol
(Cymethy!
'2-methyleyclopentan-I-ol
coer is obtained when an alcokol is passed over.
beated Cx. The aleobol is:
non
tay 7 OH ®)
H
py il ore
Wai of the following compounds is not #
phenol?
(AyGHAOH (B) CeH{CHs)OH
(C)GaHsCH:OH {(D) GHACOH
With respect to functional group phenols
resemble:
(A) Aldehydes (B) Ketones
(C) Ethers {D) Alcohols
‘The mame of the molecule shown is:
CH
yened
H ‘cl
{(B)monochlore-2-cis-pentene
(C)trans-3-Chloro-2-pentene
(D) cis 3-Chlore-3-pentens
The IUPAC name off fs:
(A) 3-Methyleyelohenene
(B) IcMethyleyelohex-2-ene
(C)6 Methylcyclohexenc
(D) I-Methyleyelohex-5-ene.
‘The TUPAC name of CHy~CH=CH-CmCH ia:
(A) Pent-3-cn-l-yné— (B) Pent-3-en-4-yne
o ee (D) Pent-2-en-4-yne
ume of the comy bere
Rene given here is:
HS
CH,
CH,
unit 15 (Fundamental Principles of OFPARIE Chen,
70.
4.
18.
16.
lectane
(C) 2,3-Diethy heptane
Joc
‘S.Ethyl-6-methytoctane
OOOH, -OH and —E~ groups Ae Preset,
°
4, the principal fenctional group is;
uel (B}-COOH
onc (D)-OH and -COOH
3
Based on the TUPAC system, neopentyl grogp i,
oeatil (8) 2.2-¢imethytpopy
f
S esac (D) 1,3-dimethylbaty!
(Cy Neopenty!
Grice choice represents: the carbom skeleton
1,6-cctadi 7
(aye=C-C-C=C-C=C-C (B) CCL
(pecaC-C-C-C-LL (D) CALL LG
hyd
y hydrogen atoms are contained in
‘of 1,4-hexadiene?
(Bie
(C6 : (p) 10
Whats the IUPAC name of the molecule shim!
CHeCH-CHe-CHe-CH- CHs
Ce
. CHs
(A) S ML i> ts
(I> 1> (@)M>u>1 uw
The heterotysis of 71¢ C=O forms
(A) Carbanion (B) Free radical is.
(C) Carboeation (D) Clea
Heterolytic fission of = covalent bond in wrens
molecules gives: 16.
(A) Free radicals (B) Only cytions
(C) Cations and anions (D) Only anions
‘Which of the following can be applied to explain | 17+
relative order of stability of cabocations?
(A) Resonance (B) Hyperconjugation
(C)Inductive effect —_(D) All of these
Which of the following ions is most stable?
(A)CHCH.CH, (B)CHs- & — cH,
CH,
CH, 18,
* eam
(CCHEHCH:CH: — (D) CHa G- GH,
‘CHs 19,
The heterotysis of forms a: :
(83Carsion ‘e Freedict
Carbocation (D) Cleavage not poss
Which of the following 5 contain eight
electrons around Scakataries atom? a.
(A) Carbanion (B) Carbene,
(C) Carbocation (D) Free radical
‘The shape of a carbanion is:
(A) linear (B) Pyramidal a.
(©) planar (D)Tetrahedral |
‘The increasing order of stability of the following
free radicals is: . .
(A) (CHs):CH < (CHs)sC < (Cos aH < (Cotta
8) (Cat YC < (Calg aCH < (CHIC < (CHC
(€) (Calishs CH < (CoH C < (CHSC <(CHCH
radicals are:
(A) Chemically reactive (B) Anions
{C) Chemically inactive (D) Cations
The reaction electrophile and
‘nucleophile involves:
(A) an tonic bond
(B) A covalent band
(C) A coordinate covatent bond
(D) None of these
Electrophilic reagents are:
(A) Electron pait donors,
(B) Lewis acids
(C) Odd electron molecules
(D) Lewis bases
Nucleophtles are:
(A) Lewis bases (B) Cations
(C) Lewis acids (D) Radicals
The alkene that exhibits geometrical isomerism ix:
(A) Propene (B) 2-Butene
(C)2-Methylpropene _(D) 2-Meethyl-2-butane
‘The number of structural isomers for CoH is:
3
(4 Me -
‘Which of following compound can show
‘geometrical isomerism?
Br ce cH,
Reanal Z
Ay C=C. ol >
i> ge ‘cH,
Scie
©: Se, (D) None of these
t
‘Which type of isomerism is not posible in
alkenes?
(A) Chain isomerism (B) Geometrical isomerism
(©) Metamerism (D) Positional isomerism
‘The IUPAC name of neopentanc is:
(A) 2-methylbutane
(B) 2-methylpropane
(©) 22-