NEET QUESTION PAPER (2018)BOOKLET CODE - CHLAA (FF)

1.

2.

3.

4.

5.

The geometry and magnetic behaviour of the 6. complex INi(CO),J are

Which one of the following elements is unable to MF3-. ? form 6 10n .

(1)

(2)

(3) (4)

square planar geometry and diamagnetic t.etrahedral geometry and diamagnetic square planar geometry and paramagnetic tetrahedral geometry and paramagnetic

Iron carbonyl, Fe(CO)5 is

(1) t.etranuclear(2)

(3) (4)

mononucleartrinucleardinuclear

Which one of the following ions exhibits d-d transition and paramagnetism as well ?

(1)

(2) ,:>-

(3)

(4)

ero2-4

Cr 02-2 7

The type of isomerism shown by the complex [CoCli(en)z] is

(1) Geometrical iso1nerism(2) Coordination isomerism(3) Ionization isomerism( 4) Linkage isomerism

Match the metal ions given in Column I with the spin magnetic moments of the icms given in Column II and assign the correct code

a.

b.

C.

ci

(1) ..

(2)

(3)

(4)

Column I Column II

Co3+1. Js B.M.

Cr3+11. ✓35 B.M.

3+Fe iii. ✓3 B.M.

Ni2+ iv. ./24 B.M.

v. ✓15 B.M.

a b C d

iv V 11 i

i ii ... ivm

...iv i 11 ill

iii V 1 ii

7.

(1) Ga(2) Al

(3) B

(4) In

The correct order of N-compounds in its decreasing order of oxidation states is

(1) HNO3, NO, N2, NH4Cl

(2) HN03, NO, NH4Cl, N2

(3) HN03, NH4Cl, NO, N2

' (4) NH4Cl, N2, NO, HNO3

8. Considering Ellingham diagram, which of thefollowing metals can be used to reduce alumina ?

9.

10.

1'1.

(1) Fe(2) Zn

(3) Mg(4) Cu

Which of the following statements is not true for halogens? (1) All form monobasic oxyacids.-

(2) All are oxidizing agents.

(3) All but fluorine show positive oxidationstates.

(4) Chlorine has the highest electron-gainenthalpy.

In the structure of ClF 3, the nwnber of lone pairs of �lectrons on central atom 'Cl' is (!J one (2) tv{O(3) four(4) three

The correct order of atomic radii in group 13 elements is

(l) B <Al< In< Ga< Tl

(2) B < Al < Ga < In < Tl

(a) B < Ga < Al < Tl < In

(4) B < Ga <Al< In <Tl

12.

13.

14.

15.

16.

Nitration of anili · ne 1ll strong ·cli gJves m-nitroa:niJ· aci c medium alsome because

(1) In spite of sub t· goes to only m

s it�?nts nitro group always-position.(2) In electro hili

am· p c substitution I·eactionsmo group is meta directive

(3) In absence of substituents.

. .always goes to m-position.rutro group

(4) In acidic (strong) medium nilin. • as anilinium ion.a e IS present

Regarding cross-link d which of the f; ll

. e or network polymers, 0 owmg statements is incorrect?

(1) Th�y c�ntain covalent bonds betwe�nvarious hnear polymer chains.

(2) They are formed from bi- and tri-functionalmonomers.

(3) Examples are bakelite and melamine.(4) They contain strong covalent bonds in their

polymer chains.

17. Compound A C H O . N

' 8 10 , is found to react with

_aOI (produced by reacting y with NaOH) and

yields a yellow precipitate with characteristicsmell. A and Y are respectively

(1)

(2)

(3)

(4)

�he difference between amylose and amylopectin IS 18. ln the reaction

(1) Amylopectin have 1➔4 a-linkage and1 ➔ 6 CY-linkage

(2) Amylose have 1-+4 a-linkage and1 ➔ 6 �-linkage

(3) Atnylopectin have I ➔ 4 a-linkage and1 ➔ 6 P-linkage

(4) Amylase is made up of glucose andgalactose

A mixture of 2·3 g formic acid and 4·5 g oxalic

acid is treated with cone. H2S04. The evolved

gaseous mixture is passed through KOH pellets.

Weight (in g) of the remaining product at STP

will be (1) 1·4

(2) 3·0'

b·ci

IA.�'> 'l-'-':;

� ::: -�1� aS �

Which of the following oxide$ is most acidic in

nature? (1) MgO(2) BeO(3) BaO(4) CaO

19.

OH

G + CJ:!Cl3 + N!lOH

\-\ ,.,t_ '> the electrophile involved is

EB

O�a+

@CHO

(1) dichloromethyl cation ( CHC12)EB

(2) formyl cation ( CHO )

(3)

(4)

edichloromethyl anion ( CHC12)

dichlorocarbene (:CC12)

Carboxyljc acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

(1) formation ofintramolecular H-bondiog

(2) formation of carboxylate ion

cm more extensive association of carboxylic

acid via van der Waals force of attraction

(4) formation of intermolecular H-bondiog

20. Which of the following molecules represents the 28.order of hybridisation sp2, sp2, sp, sp from left toright atoms ?

(1) HCec-C .. CH

(2) CH2 =CH-CsCH

(� CH2 = CH - CH = CH2

(4) CH3

- CH = CH - CH8

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due ta natural and human activity ?

�l) N205

(2) N02

(3) N20

(4) NO

21. Which of the following carlrocations is expected to 24.be most stable ?

22.

(1)

(2)

(3)

y H

N02

(4):�

Wmch of the following is correct with respect to - I effect of the substituents? (R = alkyl)

(1) - NH2 < - OR < - F

(2) - NRz < - OR < - F

(3) -NH2 >-OR>-F

( 4) - NRz > - OR > - F

,

The compound A on treatment with Na gives B, and with PC15 gives C. B and C react together to give diethyl ether. A, B and C ar� in the order

(1) C2H50H, CzHG, CzH5Cl

(2) C2H50H, C2H5Cl, C2H50Na

(3) C2H5Cl, C2H

6, C2H50H

(4) C2H50H, C2H50Na, C2H5Cl

25. The compound C7H

8 undergoes the following

reactions:

26.

3012/� Br2/Fe B

Zn/HCl CC7H8 A

The product 'C' is

(1) m-bromotoluene

(2) o-bromotoluene

(3) 3-bromo-2,4,6-trichlorotoluene

(4) p-bromotoluene

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is

(1) CHeCH

(2) CH2 = CH2

(3) CH3-CH3

(4) CH4

'/,7.

28.

Identify the major products p Q d R .. , an m the 29. following sequence of reactionsFor the redox reaction

p

OCH(CH3)2

ca) I

p (i) 02 (ii) H30+/�

Q R

CHO

6, CHO COOH

66

Q+R

OH

� CH3CH(OH)CH3 V,

OH

OCH(CH3)2 6 (4) , , CH3-CO-CH3

Which of the following compounds can form a

zwitterion ?

(1) Aniline

(2) Acetanilide

(3) Benzoic acid

(4) Glycine

30.

31.

MnO4 + C2oJ- + It'._ Mn2+ +CO2+ H2O the conect coefficients of the reactants for the balanced equation are

Mno- c 02- w 4 2 4

(1) 16 5 2 (2) 2 5 16 (3) 2 16 5 (4) 5 16 2

Which one of the following conditions will favour maximum formation of the product in the reaction,

A2 (g) + B2 (gJ � X2 (g) .:l,.H = - X kJ?

(1) Low temperature and high pressure (2) Low t�mperature and low pressure(3) High temperature and high pressure(4) High temperature and low pressure

When initial concontration of the reactant is doubled, the half-life period of a zero order reaction (1) is halved (2) is doubled(3) is tripled(4-) remains unchanged

32. The bond dissociation energies of�' Y2 and XYare in the ratio of 1 : 0·5 : 1. Ml for the formationof XY is - 200 kJ mol-1. The bond dissociation

33.

energy of� will be

(1) 200 kJ mol-1

(2) 100 kJ moi-1

(3) 800 kJ mor1

(4) 400 kJ mol-1

The correction factor 'a' to the ideal gas equation corresponds to (1) density of the gas molecules(2) volume of the gas molecules(3) electric field present between the gas

molecules(4) forces of attraction between the gas

molecules

I

34. Given van der Waals constant for NH3, H2, 02

and CO2 are respectively 4·17, 0·244, 1·36 and3·59, which one of the following gases is mosteasily liquefied ?

38. The correct difference between first.

35.

(1) NH3

(2) H2(3) 02(4) CO2

Following solutions were prepared by mixing different volumes of NaOH and HCl of diffe�ent concentrations

a.

b.

c.

60 mL M HCl + 40 mL M NaOH 10 10

55mL M HC1+45mL M NaOH 10 10

75 mL M HCl + 25 mL M NaOH 5 5

100 mL M HCI + 100 mL M NaOH 10 10

pH of which one of them will be equal to 1 ?(1) b

(2) a

(3) d(4) C

39.

second-order reactions is that lltld (1)

(2)

the rate of a first-order reaction does notdepend on reactant concentrations; the rateof a second-order reaction does depend onreactant concentrations the half-life of a first-order reaction does not depend on [AJ0; the half-life of a second-order reaction does depend on [Alo

(3) a first-order reaction can be catalyzed; asecond-order reaction cannot be catalyzed

(4) the rate of a first-order reaction does..._ depend on reactant concentrations; the rate

of a second-order r�ction does not depend on reactant concentrations

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below

BrO 4 1 ·82 V BrOg 1 ·5 V HBrO

Br- 1·0652V Br2 �

Then the species undergoing disproportionation is

(1) BrO336. The solubility of BaSO4 in water

2·42 x 10-3 gL -l at 298 K The value of solubility product <Rsp) will be

(Given molar mass ofBaSO4 = 233 g mor1)

is its

(2) BrO4(3) Br2

(4) HBrO

37.

(1) l ·08 x 10-10 mol2 L-2 40. In which case is the number of molecules of watermaximum?

(2) 1·08 x 10-12 mol2 L-2 (1) 18 mL of water(2) 0· 18 g of water

(3)

(4)

1·08 x 10-14 mol2 L-2

1·08 x 10-8 mol2 L-2(3) 0·00224 L of water vapours at 1 atm and

273K

(4) 10-3 mol of waterOn which of the following properties does the coagulating power of an ion depend ?

41. Among caH2, BeH2, BaH2, the order of ionic

(1) The magnitude of the charge on the ion character is

(2)

(3)

alone (1) BeH2 < CaH2 < BaH2Size of the ion alone

(2) caH2 < BeH2 < BaH2Both magnitude and sign of the char.ge on

(3) BeH2 < BaH2 <

CaH2the ion

(4) The sign of charge on the ion alone (4) BaH2 < BeH2 < CaH2

d

t

l

48.

Magnesium reacts With ionic compound. If the

an element CX) to form anconfiguration of {X) i 1

�0�d s3tate electronic

formula for this comp:un:i:s 2P , the siro.plest

(1) Mg2X3(2) MgX

2

(3) MgzX

(4) Mg3X2

Iron exhibits bee structur Above 900°C it t an fi

· e at room temperature.' r s orms to ti t ratio of density of • cc s ructure. Thetron at roo te that at 900°C (as . m mperature to

.. . Sllllling molar mas$ and atomicradii of iron remains constant .th t . · w1 emperature)IS

(1)

(2)

(3)

(4)

✓3 ✓2

4✓33✓2

3✓3 4✓2 1

2

44. Consider the following species :

45.

CN+

, CN-, NO and CN

Which one of these will have the highest bond order?

(1) NO

(2) CN-

(3) CN+

(4) CN

Which one is a wrong statement?

b ·tal gular momentum of electron(1) Total or 1 an

in 's' orbital is equal to zero.

(2) An rbitaJ is designated by �hree quant�o

hil an electron Ill an atom isnumbers

wb fie quantum numbers. designated Y our

. figuration of N atom is(3) The electronic con

2 2pl 2pt 2p!

(TI] [TI] [ t xi t I � I f for d 2 is zero.

(4) The value o Ul z

46.

47.

Honnones seer ted b e Y the placenta to maintainpregnancy are(l) hCG, hPL, pro8'estogens, prolactin<2> hCG, hPL, estrogens, relaxin, O)cytocin

(3) hCG, hPL, progestogens, estrogens(4) hCG, progestogens, estrogens,

glucocorticoids

The contraceptive 'SAHEL!'(!) blocks estrogen receptors in the uterus,

preventing eggs from getting implanted.(2) incre� the concentration of estrogen and

prevents ovulation in females.(3) is an IUD.

(4) is a post-coital contraceptive.

48. The difference between spermiogenesis and

spermiation is

49.

(1) In spermiogenesis spermatids are formed,while in spermiation spermatozoa areformed.

(2) In spermiogenesis spermatozoa are formed,while in spermiation spermatids are

'formed.

(3) [n spermiogenesis spermatozoa from sertoli

cells are released into the cavity of

seminiferom, tubules, while in spermiation

spermatozoa are formed.

(4) In spermiogenesis spermatozoa are fonne�,

while in spermiation spermatozoa are

released from sertoli cells into the cavity of

seminiferous tubules.

amnion of mammalian embryo is derivedThe

from

(1)

(2)

(3)

(4)

ectoderm and mesoderm

endoderm and mesoderm

mesoderm ru.ld trophoblast

ectoderm and endoderm

50. In a growing population of a COillltry,

(1)

(2)

pre-reproductive individuals are more than

the reproductive individuals.

reproductive individuals are less than the post-reproductive individuals.

(3) reproductive and pre-reproductive

(4)

individuals are equal in number.

pre-reproductive individuals are less than the reproductive individuals.

51. All of the following are included in 'Ex-situconsetvation' except

52.

53.

(1) Wildlife safari parks(2)

(3)

(�

Sacred groves

Botanical gardens

Seed banks

Which one of the following populationinteractions is widely used in medical science for the production of antibiotics ? (1) Commensalism

(2) Mutualism

(3) Parasitism

(4) Amensalism

Which part of poppy plant is used to obtain the drug "Smack" ?

(1) Flowers

(2) Latex

(3) Roots

(4) Leaves

54, Match the 'items given in Column I with those in Column lI and select the correct option given below:

a.

b.

c.

d.

(l)

(2)

(a/

(4)

Column I

E utrophication

Sanitary landfill

Snow blindness

Jhum cultivation

a b C

ii 1 iii

i iii iv

iii iv l

i ll iv

Column II

,. UV-B radiation

ii. Deforestation

u1. Nutrient

enrichment

iv. Waste disposal

d

iv

ll

ll

111

55.

56.

57.

Which of the following gastric cells indirectly

he! p in erythropoiesis ?

(1) Chief cells

(2) Mucous cells

(3) Goblet cells

(4) Parietal cells

Match the items given in Column I with those in

Column IT ana select the correct option given

below:

a.

b.

C.

(1)

(2)

(3)

Column[

Fibrinogen

Globulin

Albumin

a b

111 ii

i ii

(4) ii

iii

iii '

C

1.

ii.

iii.

iii

11

Calcium is important

contraction because it

Column II

Osmotic balance

Blood clotting

Defence mechanism

tn skeletal muscle

(1) binds to troponin to remove the masking ofactive sites on actin for myosin.

(2) activates the myosin ATPase by binding to

it.

(3) detaches the rnyosin head from the actinfilament.

(4) prevents the formation of bonds betweenthe myosin cross bt'idges and the actin

filament.

58. Which of the following 1s an occupational

respiratory disorder?

(1) Anthracis

(2) Silicosis

(3) Botulism

(4) Emphysema -

ly

60,

61.

Ciliates differ froni all Other q> using flagella for I Protozoims in(2) having a contrac �Cornotion

excess water tile vacuole fo . r removing(3) using pseudopodia for cap..,•-'-( 4) having two+- ""'-Ulg Prey •Jves of nuclei Which of the foU0-...,_ ., al kr .. u,g �eatur

. a m e coc oach from f, es 1s used to identifya emale cockr h ? (1) Presence of a b oat sh

oac . " 9th abdominal

aped sternum on thesegment (2) Presence of caudal styles(3) Forewings with da k t r er egmma( 4) Presence of anal cerciWhich of the following or . hi f d . gan1sms are known ai;c e pro ucers in the oceans ?

(1) Dinoflagellates(2) Diatoms(3) Cyanobacteria

65.

66.

67.

(4) Euglenoids 68.

62. Identify the vertebrate group of animalscharacterized by crop and gizzard in its digestivesystem.

63.

64.

(1) Amphibia

(2) Reptilia

(3) Aves

(4) Ostei<;hthyes

Which of the following animals does not undergo metamorphosis ?

(1) Earthworm

(2) Tunicate

(3) Moth

(4) Starfishr

animals is not a Which one of these

homeotherm ?

69.

70.

The similarity of bo of many verteb te �e structure m the forelimbs111 ra s is an example of -.:l Homology

(2) Analogy(3} Convergent evolution(4) Adaptive radiationln which d" pathogen �=ease �oes �os�uito transmitted 1 h . use chronic inflammation ofYillp at1c vessels ? (� Elephantiasis(2) Ascariasis (3) Ringworm disease(4) A.moebiasisConversion of milk to curd improves itsnutritional value by increasing the amount of(1) Vitamin D (2) Vitamin A (3) Vitamin B12(1) Vitamin EWhich of the following characteristics represent'Inheritance of blood groups' in humans ? a. Dominanceb. Co-dominancec. Multiple alleled. Incomplete dominancee. Polygenic inheritance(1) b, c and e(2) a, band c(3) b, d and e(4) a,cand e

Which of the following is TU>t an autoimmune disease? (1) Psoriasis

"'"· . (Z) Rheumatoid arthritis(3) Alzheimer's disease(4) Vitiligo

f examples for· sets O •

Among the followmgh . orrect option : · select t e me

divergent evolution, h tah

f bat and c ee (1) Forelimbs o man,

tah t an and cbee (2) Heart ofba , JD

tah , t man and chee

(S) Brain ofba , s batandman

( 4) Eye of octopu '

(l) Macropus

(2) Chelone

(3) Camelus

(4) Psittacula

72.

71. Match I.he items given in Column I with those inColumn II and select the correct option givenbelow:

Column/

a. Glycosuria

b. Gout

C. Renal calculi

d. Glomerularnephritis

a

(1) iii

(2)

(3) ii

(4) IV

b

u

11

iii

1

Column ll

i. Accumulation of uricacid in joints

u. Mass of crystallisedsalts within the kidney

iii. Inflammation inglomeruli

iv. Presence of glucose in urine

C d

iv i

iii iv

lV

ii 111

Mat.ch the items given in Column I with those in Column II and select the correct option given below:

a.

b.

C.

d.

(1) ...

(2)

Column I

(Function)

Ultrafiltration

Concentration of urine

/ Transport of urine

Storage of urine

a b C

iv V 11

iv 1 ll

Column II

(Part of Excretory

System)

i. Henle's loop

11. Ureter

iii. Urinary bladder

iv. Malpighiancorpuscle

v. Proximalconvoluted tubule

d

iii

iii

(3) V iv i u

(4) V iv I iii

73.

74.

75.

76.

77.

Nissl bodies are mainly composed of

�) Proteins and lipids (2) DNA and RNA

(3) Nucleic acids and SER

(4) Free ribosomes and RER

Which of the following terms describe h\Utlan dentition?

(1) Thecodont, Diphyodont, Homodont(2) Thecodont, Diphyodont, Heterodont(3) Pleurodont, Monophyodoot, Homodont(4) Pleurodoot, Diphyodont, Heterodont

Many ribosomes may associate with a Slllg!e mRNA to form multiple copies of a polype!ltide simultaneously. Such strings of ribosomes lilt

termed as (1) Polysome(2) Polyhedral bodies(3) Plastidome(4) Nucleosomc

Which of these statements is iricorrect?

(1) Enzymes of TCA cycle are present m

mitochondrial matrix.

(2)

(3)

(4)

Glycolysis occurs in cytosol.Glycolysis operates as long as it is suppliedwith NAD that can pick up hydrogen atoms.Oxidative phosphorylation takes place inouter mitochondrial membrane.

Which of the following events does not occur inrough endoplasmic reticulum? (1) Protein folding

(2) Protein glycosylation

(3) Cleavage of signal peptide(4) Pbospholipid synthesis

78. Select the incorrect match :

( 1) Lamp brush - Diplotene bivalentschromosomes

(2) Allosomes Sex chromosomes(3) Submetacentric - L-shaped chromososJ.1les

chromosomes (4) Polytene

chromosomes Oocytes of amphibiaJJS

19, All of the follow· mg are

(1) an operatorpart of an operon

(2) structural ,,, .,enes(2._l an enhancer (4) a promoter

except

gO. A woman has an X li X h

- nked co di · c romosomes. Th. n hon on one of h

81,

82.

inherited by 18 chromosome

er

can be

(1) Only daughters(2) Only sons(3) Only grandchild ren(4) Both sons and d aughtersMatch the items . . given m Col . Column II and select

umn I with those in

below : the correct option given

Column T

a. Proliferative Phase i.

b. Secretory Phase ii.

c. Menstruation iii.

a b C

(1) iii 11 i

(2) iii ii

(3) u iii l

(4) ill ii -

According to Hugo de Vries,

evolution is

(1) Multiple step mutations

(2) Saltation

(3) Pheootypic variations

Minor mutations

Column II

Breakdown of endomeirial lining

Follicular Phase Luieal Phase

the mechanism of

84.

85.

86.

(4)

83. AGGTATCGCAT is a sequence from the coding 87.

strand of a gene. What will be the corresponding

sequence of the transcribed mRNA?

(1) AGGUAUCGCAU

(2) UGGTUTCGCAT

(3) ACCUAUGCGAU

Which of the folJowin .hormone ?

g 15 an amino acid derived

(1) Epin<'phrine..

(2) Ecdysone

(3) Estradiol

(4) Esiriol

Which of the folio . · wmg structures · mcorrectly paired w'ih ·t fun

. or regions is1 1 s ction?

(l) Medulla oblongata :

(,;) Limbic system

(3) Hypothalamus

(4) Corpus callosum

controls respiration and cardiovascular reflexes.

consists of fibre tracts that interconnect different regions of brain; controls movement.

production of releasing hormones and regulation of temperature, hunger and thirsl.

band of fibers connecting left and right cerebral

. hemispheres.

V�'lu�h of the following hormones can play asigruficant role in osteoporosis ? (1) Aldosterone and Prolactin<2) Progest.eron·e and Aldosterone(3) Estrogen and Paratbyroid hormone(4) Parathyroid hormone and Prolactinlo-.

'!'ho transparent lens in the human eye is held in

its place by

( !) ligaments attached to the riliary body

(2) ligaments attached to the iris

(3) smooth muscle.\! attached to the iris

(4) smooth muscles attached to the ciliary body

(4) UCCAUAGCGUA-