aiims solved paper 1999

7/26/2019 AIIMS Solved Paper 1999

1/26

1

Max

. TIJ Tle

: 3

2 hrs.

M

ax.Ma

rks :

200

PAR

TI. P

HYS

ICS

.

1. A meta

l

r

od

oflen

gth

L

I

cla

mped

at

a

dl t

ance

L

/ 4 om

on

e

e

nd

It I eet

In to l

ong itu

dinal v

ibrati

on by

pu

lling .

on l

ength

w le w

ith a

r in

cover

cloth

p iece

. T he

wave

length

for fu

ndam

en tal

m od

e of v i

brat io

n will b

e

.(a)

L/4

b)

3L/4 (c)

L

(d)

l

./2

2.A

t

h inequl

conv

n len

hu

focal

lengt

h

10

em

, re f

ractive

bidex

15

. O

ne ofl te

faca I

now

liver

ed. an

d

I

t I H

en

tha

t

an ob

ject

plac

ed at

dletan

ce U

I

n on

t

of It,

hu

l te Im

age co

incidi

ng ~

ob-

j

ec t. T

heval

ueof

U

I

(a)

20

em

b

)

1

0em

5 em .

.

d) 20 em

S.

1x

ra

le ton

e

ach ofrel

tance

R .

and

two n

leto

n e

ach of

reelet

ance

r ar

e

con

nected

In the n

etwor

k h

ownbe

low.

T

be

e

quiva

lent

ral

taoce

b

etwee

n

A

a

nd 8 I

a) 3R

+

r

c)

2R/3

b) 6R

+2r

Rr

d)3+s

4. A circu

lar lo

op

of radlu

r

c

arrlee

a

cur

rent

1.

It

I

equivalent

to

a magnetic

dl

pole

of

ma

gneti

c m

oment

(a)

nr

2

1 b)

i

r

(c) 2

nir

d) _ _

-r2

5

Power

factor

In

eeri

e ft L

C

r

aonan

t

circu

it I

(a) 0

.5

(b)

0.

707

(c) 1

d)

zero

6 .

In

the n

etw or

k give

n below

all

the

five

C

Jtpac

lton hav

e th

e me

capa

ci tanc

e

C

uc

h

. Th

en th

e capac

itance

betw

een t

he

term

inal A

and 8

will

b

e

I

1]

u

I

I

I

c

b)

5 c

(c

)

C

d ) ~ C

a

)-

5

7

The tati

onary

w

ave

produ

ced I

n a

etretch

ed

trln

g i gi

ven

by .

Y

=

A

C

os

2

X

)

in (

2

T7rt )

Th

e corr

eepon

d lng p

rogree

log w

ave bu

a

n

am

plitu

de e

qual

to

.a

)

N

b)

A

(c)

2A

(d)

Al fl

8 A

elnu

eoldal

a.c. f

low

In an

nduct

or

u eho

wnIn

the gra

ph be

low :-

.

Then

the p d

. a

c..Oe

the In

ducto

r

I

a

m a

xim um

at

th e. ln

taot

Ind ic

a ted on

the

graph

by

the

p

o ~

Ip

/

\

\

:h

J

I

a)S

b)P

c)R

d

)T

9 .

W hic

h of t

he fo

llowin

g rela

tione

be

tween

w

eber,

Hcon

d, amp

ere and

vo l

t Je

correc

t?

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2/26

(

a) w

eber/sec

ond =

volt

(b)

web e

r

x

secon

d =

vol

t

c)

s e c o

n d

=

ampe

re

(d) w

eber x

seco

nd =

amp

ere

1

0. A

cl

n:ular

coil

of

r

adlu

R carr

ie a

cu

rrent

fn f

t.

T

he

ma

gneti

c field

alo

ng

Itaaxla

d e c r e a ~

aa

we

moveaw ay &om

Ita ce

ntre.

Th

e apac

e rate

offal

l of

tbla

fie ld

I con

e

t

ant

at d

istanc e

eq

ual

t

o

a)

2 R

b) R

c)

3 R

d )

R/2

11 .

A .oap

film

is forme

d

on a w

ireri

ng

he ld

vert

ic lly

and allow

ed to

dr

ain .

A

dlff

u.e s

ource

of whi

le ligh

t Ia ob

served

by re

flectio

n In th

e

oap 111

m

.

In

th J

conn

ectio

n I

ndica

te the

w ro

ng s

tate

ment

:

a}

The c

ol

ours

are

d

ue

to

refrac

tion

of

lig

h t by

the

wed g e

-shape

d

f

ilm

b) T

he

thickne

ss

of the film

i

s of

the

same

orde

r as t

he

w

avelen

gth of

vis

i

b le

U

ght

c) T

he ba

nd

of

colour

s mo

ve d

own

w

ards

8s th

e

f i lm

dra ins

.

{d ) Just

be

fo re

the

film

breaks

, it may

a p

pear

bla

ck

at

the

top.

1

2 The

ap

ec lfic

cha

rgeo

f an

electr

on

I

a) 57

x 10

7

Co

ulo

mb/kg

(b )1.

76 x 1

0

11

C ou

lomb/k

g

c}

16

x 10-

19

Coul

omb/ gm

d)

1 6

x

10

-

19

Co

ulomb.

1

3

.

Vec

ton 3t

- i

f + t

and i f

+ t

+ n

it

w

ill be

pap

endtc

ular

to ea

ch o the

r If

a

}

m

8

b

) m

= 6

c}

m

3

d) m

= 1.

14. N

ewton

-aeco

nd Ia

th

eunitof

a

)

energy

b)

m

oment

um

c)

angu

lar mom

entum

(d)

veloci

ty.

15

. In

t

he

S.l .sys

tem th

e

unit of

e

net'gy

is

a)

elect

ron-vo

lt b)

jo ule

c)

calor

ie

(d

) erg.

16

. Two

r

ods of the

MJ

De l

ength

l b

ut

croe

..ectJo

n Jnthe

1'8tJo

Sa l

SA =

4

are

Joine

d at

a

heate

r H

and ahea

ts ink

S

u

ahow

n . T

he rate

of h

eat

flo w to

S

le

f

ound to

be fto . f

p

oi

nts o

f

A

and

B et

dla

tance

e

lJ 3

each

& om H

are

now

Joined

by

a

conductor

C

of length

L

and

the cr

oee-sect

lon

of C

ls a

uch

that

3c

=2S /

A

, the

n

ew rate

of hea

tflo

w to

S w i

ll

be see f

igure)

6

a)

5

o

c)

o

c

b) 1

3 o

12

7

d ) 5 o

17 M

ot

of the

com

ets

m ovin

g ro

undth

e

un hav

e o

rbit

of

th

eah

ape o

f

a)

a

h y p et

bo la

(b) a p

arabol

a

(c)

an

elon

gated e llip

se

d

)

a

cir

cle.

18

K ir

choff'

laws

are a

pplic

able to

(a)

A.C only

b)

D.C

on

ly

c} B

oth a} and

(b )

(

d ) ln

termitt

ant c

urrent

s only

.

19. I

n the

g iven

diag

ram, a

cur

ren t o

f 0 .5

A

c

auH

d

to

paee

tJu

ougb

a

Nlt

or

sho

wn.

Theem

f of

the

cell

Ia2

V, and

Itt

Inter

nal rn l

stnc

eIs

zero.

Indi

cate th

e

w

rong

e

tatement

a05A

J

~

~ ~

b

~ V

(a)

the

p .d. b

e t ween

a

an

d

c

is

1.0

V

(b) th e p .db e t ween a

and b

is

1 .0

www.examrace.com


3/26

c)

b

is

at a higher pot

ential than c

d) is at a

h ig her po

t

ent

ia lthan c .

1

R

2

20

.

In LCR

circuit If L

C >

4

L

2

,

the

ct

rcult

Is

a )

osc illa tory

b ) dead beat

c)

cri

ti

cally damped

d )

none o f th e

above .

21 . to

UN a tranltor

u an ampl i

f ier

a)

theemitter-ba

sej

u

nction is

fo rward bias

ed

and

coUe

ctor-base

junction is

rev erse

bi

ased

b) both

junc

tions are

reversebiased

c) both ju

nctions are f

o rward

i ~ d

d) it does

not matter how

the transis

to r is b i

ased,

1t

always work s

as

an amplifier.

22.

An ofclllo

Kope meuure

e

the

a)

Peak

t

peak valu

e of AC volta

ge

b) RMS value

of A

C

vo ltage

c)

D.C. value of

a

vol

tage

d) N

one of

the above .

23. De B

roglie wa

velength

A I propor-

tlo

aal to

a ) i fo r

p

hotons and liE fo r

parti

cles

b)

li

E for pho

tons and for

parti

cles

c) liE

for

both photons

a

nd part

icles in

m

o-

t

ion

d)

or bothphotons a

ndpartic

le s.

tt. A

gtwn H

llllcoaduct

or

hae

elec

tron

cooc:

ent ra t loa

of

8

x 1

0

13

pa

cm

3

eDd a

bole

c:oncentra

tlon of 5

If

10

12

per em

3

What I

th e ra

tttvttyof thl N

mple tf the

e l

ec t ron

mobility

I 23,000 cm

2

/ V an d

h

oi.

m

obility l

100

cm

2

I V

?

a)

3 .395

x 10

-

4

ohm x em

b)

3 .3

95ohm

x em

c)

5

x

10 -

6

ohm x

em

d)

45

x

10 -

6

ohm

x

em .

25

.

What

angle

a to

the

ho.Uoa

w ill

b

e

f

ormed by

the urfac

a of

ln tiM

tank

of a motor

car moving

horbontal

ly

with

a

c

ontant

ac

caluatloa of

2

.44 m /

2

?

a) 9

= 14

b ) 9 =

45

c)

e

=

3


4/26


5/26


6/26

(b) Einsteins theory of relativity (d) Newtons corpusc

ul

ar theory.

(c) Huygen s wave theory

(Directions) QS1 to 60

consists of

two

statements,

one labelled the Assertion (A)

and

the other

labelled

the

Reason (R)'.

amine these

statements carefully ancl

de

clde If

the statements Assertion (A) and the

Rea.on

(R) are Individually

true

and f/

a,

1

whether

the

reason ls a correct explanation o

the

a.sertlon.

Select your

to

these questions from

the codes

given below

(a)

Both

A

and

Rare

true and

R

is the

cor-

(c) A

is

true

but

R Je

faiN

rect explanation

of A (d) A

l

false

but

R

true

(b) Both A and R are true but R is

not

a

correct explanation of A

~ o e ~ n

51

. A

pulsar is

a

source

of radio

waves that varies in

A pulsar is a rotati

ng neutron star

intensity at

n:?gUlar

intervals

(a) (b) (c) (d)

52. Activity of tfl undecayed radioactive nuclei o{ Activity is proportional to half life

half life 50 days

is equal

to that of 1.2x

ul

number

of

undecayed

nuclei of

same other

material with half life

60

daYs.

(a) (b) (c) (d)

53.

A laser

beam

of

0.2

watt power can drill holes The frequency of laser light

through a metal

sheet whereas

a

1000

watt

torch light

cannot

(a). (b} {c) (d}

54. In a radioactive disintegration electron

is

Electrons are always

present

inside nucleus

emitted

by

the

nudeus

(a) (b) (c) (d)

55

.

We

always

see

the

same

face o the

moon

(a)

b)

c)

The period o rotation of the

moon

about its am

and its period

of

revolution about

the

earth

me

equal

d)

56

.

ln

an ele tri

bulb

, the filament

is

in the form . A coiled coil filament occupies less

space

Md

of a coiled coil iS therefore,

not

cooled significantly by the

convection currents in

the bulb

57

. Wood is a

bad

conductor of electricity

(a)

(b)

(c)

58. A sail

boat cannot

be propelled

by

air blown

at

the

sail from

a

ig fan

attached

to the

boat

(a}

(b

c)

59. Cooling inside a refrigerator

is not

proper

when a thick layer of ice deposits on

the

freezer

~

(d)

Wood

has

a large

number of

free electrons

(

d

Action

of the air

from

the

fan and reaction

of

the sail, both act on

the

boat

(d)

lee is a bad

conductor

of heat

(d)

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7/26

60

. Even

a sm

all bird

hit ting

a flyin

g aero

plane

can

ca

use he

avy da

mageto

it

a)

b)

c)

Th

e

b

ird im

parts a

la

rge im pu

lse and

a la

rge

fo

rcedu

ring th

e short

t im e of

i

m pact

d

)

PAR

T

II

.

CHEM

IST

RY

1

.

B

ohr

mod

el of

the etru

cture

of a

tom le

no

t In

confo

rmity

with

(a)He isenberg s

un

ce

rtain ty princip le

b) Hun

d s rule

o fm a

x im um

m ult

iplicity

c

)A u

lbau p

rincip l

e

(d

) Paul

is exclu

sion p

rincipl

e

2 .

The

ft

nt loalza

tion

en

ergy of

hyd

rogen

le 2

.17

9

x

1

0 -

II J

T

he e

econc

l Ion i

za

tion

energ

y of hel

iumato

mw il

l

b

e

a)

8 .7

16 X w -

18

J

b

) 4

.

35

8 X

10 -

18

J

(c) 5.45

x

10-

17

J

d) 1.0

9 > 10

-

18

J

3 .

The epec

trum

o

f He may

be e

xpec

ted

to

b

e el

mllar to

that

of

a) H

b)u +

c) He+

d)

Na.

4

. Am

ong

the fo

llowi

ng e

pecla.

the

one

tha

t d o a

no

t

exl

et

I

a)

[S

iC (;]

2

-

b) [C

CI(;)

2

-

. c

) [G eC

I ;]

2

-

d )[S

nCI6]

2

-.

5 . The

conjugate acid

of

N H 2-

ie

(a)N

3

-

(b

)

>

N

H

2

-

(c) NH3

.

d )

NH t

6 . Tr

anelt l

on

met

als a

re ofte

n param

ag

Mtlc

o

wing to

th

e prae

nce of

a) vale

ncy el

ectron

s in th

e out

er two

ele c-

tr ons s

hells

{b

) unpa

ired e le

ctr ons

in the

ir atom

s

c

) vacant

o rbi

talsin

the n t

h orbit

d) el

ectron

s in o

rb itals

o

f the

n-1)

o rbi

t.

7.

H

igh

Pf

ftun

and

hig

h tem

pent

un w ill

be favo

urable

con

dition

e f

ora

high

equ

i

l ib

rium

yie

ld

n

th

e rea

ction

a)

2C

i27

(g

)

-

- C ~

g

+

70

M) +

126

.8 kcal

b

)

Nz(g) +

3 Hz(

g)

2

N

H3(g}

+

22

.08

kcal

c)

Cl2

(g ) + 20z(g

)

200z

{g)

- 49

.4 kc

al

d)

2NF3(g) N2(g)

+

3F2(g -

5 4 .4kcal

8. A

mong

the o

xy-ac

lda o

f chlo

rine,

the

etrong

eet ox

idizin

g ag

ent

l

e

a) HCI0

4

(b

)

HC

l03

c)

HCI }z

d

)HCI

O

9 .

When

dr

y e

ilv

er

chl

oride

ie

fused

w

ith

s

odium

c

arb

onat

e

,

ellv

er

ie

obta

ined

(a) f

ree m e

tal

(

b)

gzC

z

c)

gz

O

(d)

A

gzC0

3

1

0

.

W hich

o

ne o

f t

he foll

ow ing

te t ra

chlo

rid

es do

ee not

un

dergo

hydro

lyelt

a)

S

nC4

b

)

Ge

C4

cl

SiC

4

d) c c ~

1

1. The

unit

of dipo

lem

ome

nt le

a) cur

ie

b)

d

ebye

c) f

araday

d)

't'\O

ne

~

12.

Am

ong t

he fo l l

ow ing

a

clde

, th

e on

e

that can

act

a e

both

an

oxidizing

agent

and a

reduc

ing a

gent ia

a) H

NOz

b

)H

CI04

c)

HN03

d) H

2S04.

13. Th

e 0

8ruot

ic preau

re

of a dilut

e eo

lu-

tlo

n lnc

reue.

w

hen

a

)m o

re of s

olu te i

s adde

d

(b

) m or

e of so

lven t is

added

c

) tem pe

ratu re

is incr

eased

(d)

an

y

one

of

the c

hange

is

mad

e.

1

4. Wh

ich

o f

the f

ollowi

ng

stat

emen

t.

a

bout boron

h ali

des

I WRO

NG?

a)

T

hey fo

rm tet

rahedr

a l m ol

ecu les

(b)

The

y react

wit h eth

ers

to fo

rm add

ition

compo

unds

c

)

T

hey a

ll hydr

oly se i

n w

ater

(d

) T hey

are

a

ll stron

g Lewis

acids

.

1

5. Th

e A 2

Ssc

olloi

d

w

ill be

m

oat rucl

lly

coagulated

by

www.examrace.com


8/26

a} MgC

I2

b)

AJCI3

c

)Na2S

04

d) N

a3P04

16

.

T

he

lO

} In a

.olutJ

on Js

1 x 10

8

The

pHof

thes

olutio

n is

a) 1

0

.

0

b )

8 .0

c)

6.0

d) 4

.0.

17

. Equ

al we

ights of

hy

droge

n

a

nd me

th

an

e are

m

ixed n

a

n

em

pty

c ontain

er

at

25

C.

The

fraet

ion

ofth

e total

pre

ssure

e

xerted

by

hydr

ogen is

Is

42 k

J, th

e enth

alpy

offor

matio

n of

Ca

COs

(s) is

a

) -288

kJ

b)

+ 202kJ

c)-2

02 k

J

d)

-42

kJ

.

22

. Acid

ic hydr

ogen Is

pres

ent n

a)

ar

enes

{b ) ethyr;e

c)

e

thene

d

) ethan

e .

23

.

n

th

e seriesof reactions

NH

CH3

. CO

OH

~

7

~

.

I

H eat

Pz

0

5

A

8

--+

C

18.

He

at of

neut

ra liza

tion of

HC

I

by

N

aOH

Is

13.

7

kca

f pe

r eq

uivale

nt

, and

by

NH40

H is 1

2.27

kca l. Th

e

heatof di

sso

elatlo

n of N

H40

H is

a)

-2

5 .97 kc

al

b)

.97 k

cal

c) - 1.4

3kca

l

d)

1.

43 kc

al .

19. T

hat th

e

c

onven

tiona

l

repre

untat

ion

of

o

x y g en

mo

lecule

:

:

:

:

Is

wr

ongI

s sugg

ested

by

the

fact

that

a)

oxygen

is

a colourless

gas

b)

oxyg

en ato

ms jo

in to

orrn

th

e tria

tomic

o

zone

molecu

le

c)

ox

ygen is

param

agnet

ic

d) oxy

gen

i

s

h

ighly

reactiv

e.

20.

The a

lkane

with

t

he ca

rbon ch

ain

c

C

-

C could

not bena

med

I

c

a)

2-

meth

yl iso

butane

b)

neope

ntane

c)

2, 2

-

dim

ethyl

propan

e

d) tetr

arneth

yl

meth

ane.

21

. G

iven th

e

e

nthal

py

of for

matio

n o

f

C

02 g)

Is

-

94

.0 kJ

,

of

Ca

O (s

) Is -1

52

kJ

, an

d the ent

halpy

of

there

ac t io

n

CaC03(s)

CaO(s)

+

C02(g)

the

end

pr

oduct

C Is

a) CH

4

(

b }

a

cetoni

trile

c)

C H 3

0H

d) me

thyl c

yanate

.

24

.

Dry distil

lation

of

a

m bc t

ure

o

f t

he ca

l.

cium

salts

of

a

cetic

ac

id an

d p

ropion

ic

acid

w ll

l yiel

d

a) m

ethyl e

thyl

ke

tone

b )

a

cetic a

cid

c)aceto

ne

I

d)

aceta

ldehy

de .

25 .

Amo

ng th

e fo ll

owin g

comp

ound

s, tbt

I

.

on

e tha

t DO

ES N

OT d

issol

ve In

cone.

H

2S04

eve

n

o

n warm

ing Is

a)

aniline

b)

benz

ene

c)

he

xane

d)

ethyle

ne .

26. A

nucle

ophll l

c

r

eagen

t I

s

a) C

02

b)

BF3

c) dAJCI

d)

N

H3.

27 .

Lu

cas rea

gent

con

sists of

a)

am .

C

u Cl

b) co

ne . H C

l +a

nhydro

us ZnC

iz

c)

N

aNOz

+ dil HC

l

d

)acidi

fied KM

n04.

2

8 . Na

tural

rub

ber Is v

ulcan

ized by

h

eat

ing

t w

ith

a

) carb

on disu

lphide

b) su

lphur.

c)

car

bon bl

ack

d ) z

inc oxi

de .

29.

Can

nlzaro

s reac

tion

Is giv

enby

a)

benzal

dehyd

e

b)

e t h y

c e t l

e h y d e

c)

formal

dehyd

e d

) all o

fthe a

bove.

www.examrace.com


9/26


10/26

45.

The

non

nal

lty

of

co

ne.

H C I

u s

ed In

the

la

bora

tor

y

I

(

a) lO

N

b)8

N

c

) 4 N

(d

) 2 N

.

46

.

Wh

ich

of

th

e

fo ll

o w i

n g

w ill

have

the

le

at

hW

ldr

e d

rota

tion

ab

out

th

eca

rbo

n

carbon

bond

a

)Eth

yne

b) Eth

ene

c) Eth a

ne

(d)

Hex

achl

oroe

than

e .

47. U

nit

s

for

th

e

rate

co

nsta

nt ,k,

o

f the

ze

ro or

der

r

atee

qua

tion

ar

e

a} L

2

m

ol-

2

se

c

1

{b)

L

mo

l -

1

s

ec

1

c)sec

-

1

(d

)mo

lL

lse

1

.

48.

Pro

tein

s ar

e c har

act

eriz

ed

by

the

l

ink

a

ge

0

I

I

I

(a)

-

H -

N

I

N

0

I

II

(c

-

C-

N

-

1

b)

H

C =

N

0

H

II

I

(d ) -

C

-

N

-.

49 . A

mo

ng t

he

fol

low

ing

eu

lph

ldes,

the

o

ne t

hat

do

es

no

t d

l

..

lve

In d

il

H

NO

s

(a)

Cd

S

(b) C

uS

{c )

PbS

d

) Hg

S.

5

0.

Wh

ich o

f th

e

fo l

low

in g lo

ne

I

n

ot

le

o

elec

tro

n

lc w

ith

th

e

o

ther

t

hre

e

?

a) co

l

b)

N03

-

c

)so}

-

d) so

i.

(D i

rec

tion

s)

QSJ

to

6 con

sist

s

o

f two

st

atem

en

ts,

on

el

abe

lled

th

e As

sert

ion

(A)

an

d th

e oth

erlab

elle

d

th

e R e

aso

n (R

) . E

xam

ine

t

hese

stat

em

ents

car

efu l

ly c

md cf

e

clde

f

t

he s

tate

me

nts A

sser

tion

{

and

t

he Re

aso

n (R

) ar

e In

divi

dua

lly tr

ue

cmd

feo

11

1het

her

th

e

re

aso

n

Is a

co

...-e

ct exp

lana

tion

of

the

asse

rtio

n

.

Se

lect

yo

urC

lftSU

iers

to

thu

e q

uut

lon

s ro

m

the

cod

es give

n

bel

111

a}

Both

A

and R

ar

e

t

rue a

nd R

is th

ec

orre

ct expl

anat

ion

of A

(b

)Bo

th A

and

Ra

retr

ue b

u t R

is no

t a c

orre

ct ex

plan

atio

n of

A

c) A

is true

b

ut Ri

s f ls

e

(d

)A

is

f lse

bu

t R

is

tru

e

Asse

rtio

n

51

. Bo

th 1

2

go c

arbo

n

a

nd 27g

of

a

lum

in ium

will ha v

e 6

. 12x

1cP

a to

m s

a

)

b

{c)

52 .

S uc

rose

is

sw

eet

est

in ta s

te

w

~

53. Po

tass

ium

cann

ot

beo

btain

ed b

y th

e ele

ctrol

y

sis o

ffus

ed K

CI

i

nCa

Cl2 ,

mel

ts

a) (

b}

{c

)

54.

El

e

ctro

n re

eje

cted

f ro m

a c

e rta

in m

etal

whe

n

ei

ther

b lue

or viole

t lig

ht st

rikes

th e

met

al su

r

f

ee . H

ow e

ver

o nly

viol

et li

ght c

ause

ele

ctro

n

eje

ctio

nfro

ma

seco

nd m

eta

l

Rea

son

Gra

m

atom

ic

mas

s

of

an

ele

me

nt con

talm

Av

oga

dro n

um

b er o

f a t

om s

d

)

Sucr

ose

is

co

nve

rte d

by

the

enzy

m e

inv

ertas

e

present In living systems to

gl

u co se an

d

f

ruc

tos

e

d)

Me

tallic

po

ta ssi

um

isso

luble

in

the

melt

m

ol

te n

Ca

CI2 l

an

d

he

nce

the

cell

for

ele

ctrol

ysis

g

ets sh

ort

circu

ited

d

T

he e

lectr

ons

in th

e

fir

st

m

etal

re q

uire

less

en

erg

yfo

reje

ction

www.examrace.com


11/26

{a)

b)

c)

55. Cyclobutane is less stable than cyclopentane

a} b) c)

56. Benzoyl chloride

is used

for

the

preparation of

derivative

of

tertiary

amines

~

57. In formaldehyde, all the four atoms are in the

samep\ane

~ C : O

r

a) b)

c)

58. A spectral lin will

be

seen fot: a 2px - 2py

transition

a}

b)

c)

59. lt is very difficult

to

subject vinyl chloride

to

nu

cleophilic substitution

as compared to

ethyl

chloride

a}

b)

c)

50

.

The

configuration

of boron atom

cannot

be

ls22s3

a)

b)

c)

d)

The bond angles in cyclobutane and cyclopen

tane are 90

and

108

, respectively

d

It

forms solid benzoyl derivatives

d)

The

carbon

atom

in formaldehyde is

f

hy

bridized

{d)

Energy

is

released in

the

form

of

wave

of

ligh

when the

electron

drops

from 2px to 2Py orbita

d)

The

vinyl

group

is electron donating in viny

chloride

d)

Hund

's rule

demands

that

the

configuratiQJ

should display

maximum

multiplicity

d)

P RT Ill.

BIOLOGY

l.

The

cell bodies of

the motor

neurons

an located In the spinal cord In

(a) intermediolateral cell

column

(b) dorsal

root

ganglia

c) dorsal hom (gray matter}

(d) ventral

hom

(gray matter}.

2. The developing embryo Is a hollow

sphere of

cells

one cell thick during

the

tage

(a) cleavage (b) po ar

body

c)

gastrula (d) blastula.

3. A hog breeder would use a

backcross

to

(a) determine

if

a particular

hog is

genotypi

cally

pure

c)

eliminate

chances

of congenital malforma

tions

c)

maintain a

pure

line

of

desirable traits

(d) produce a bigger and healthier strain.

4.

Characteristics

which

are

common

tc

the

Arthropod, Mollusk, Echinoderm

and Chordate

lines

are a an)

(a) segmentation

and

a coelom

a}

endoskeleton and a coelom

(c)

compound eye and

segmentation

(d) coelom and a parietal

eye

.

5. Mesoderm, one

of

the germ layers, gives

rise to a group of structures

In

animals.

Which group Includes structures

of

ex-

clusively mesodermal

origin ?

a}

skin, brain.

bladder

, vagina

(b) muscle,

outer

layer of digestive tract,

carti-

lage, bone

(c) bone , lens of

the

eye;

pars

distalis, gall

bladder

(d) trachea, lungs, stomach skin.

6. Characteristics of epithelial tissues may

include

www.examrace.com


12/26

(a) absorption (b) secretion

(c) protection (d) all of the above.

7. The contractile vacuole of protozoa

functions

to

a) temove surpluswater

(b) seetete proteins

c) regulate the

pH

of the internal milieu

(d) digest food materials.

8 .

A mink breeder

finds

that 50 of the

offspring are aa. What genotype were

their parents

?

a)AAxaa b)AaxAa

c)

aa x

aa

(d ) Aa x aa .

9. The

primitive

condition of the cyclosto-

mate is

indicated

by

their

(a) asexual reproduction

(b) jawless

mouth

c) possession of scales

(d) toothless jaws

10

.

The

vital centers

for control of heart

r,.te, respiratory rate,

and

blood ptes

sure are located

In

the

(a) cerebellum (b) medulla

c)

pons (d) midbrain.

11. The

stimulus

that induces migration in

animals

Is

(a) chemotrophic (b) hydroperiodic

c)

geotrophic (d) photoperiodic.

12. All

of

the

following

may

be

considered

as secondary sex

characteristics of

the

male

EXCEPT

(a) increase in sex drive

b) external genitalia

(c) pattern of hair and

beard

growth

(d) development of a

deeper

voice.

13.

The

reflex arc

is of utmost importance

to human beings. Which of the follow

ing is NOT a component

of

the teflex

arc?

(a) synapse (b) medulla

c) ventral hom cell (effector)

(d) dendrite (receptor)

14.

Filtration in the kidneys results

mainly

&om

(a) blood pressure (b) reabsorp

ti

on

(c) blood flow (

mete

rs/sec.).

(d) osmotic phenomenon.

15.

Which

of the

following

structures are

NOT considered modlftcations

of

the

cell

membrane

?

(a ) desmosomes

(b) terminal bars

(c) basement membrane

(d) microvilli.

16.

An

aggregation

of

nerve cell

bodies In

side the

CNS

central nervous system) Is

typically called a

(a) colony

(c) clone

(b) ni SSI zone

(d) nucleus.

17.

The

most

numerous

leukocytes are

the

(a ) eosinophils (b) monocytes

(c) lymphocytes (d) neutrophils.

18. Administration of which of the follow

ing compound (s) Increases clotting

time

(a) dicumarol (b) aspirin

(c) heparin (d) all of the above.

19.

In

ant lions the gene

for

dull teeth is

dominant D.

The

recessive

gene

d pro

duces

sharp

teeth. Another geneT

, when

homozygous,

produces

dark-brown

coats. Its allele

t , when

homozygous,

produces

albino

coats

.

The

heterozygote

Tt

Is

chocolate colored

. I f a chocolate

colored, dull-toothed male whose father

was

sharp toothed Is mated to a

choco

late, sharp-toothed female, what

Is

the

probability

that an albino, sharp-toothed

offspring

will be produced ?

a

)

8/16 (b) 12/16

c)

4/16 (d}2/16.

20. Blood-sucking

Insects

usually carry

parasites

ln their

(a) lungs (b) blood

(c) salivary glands (d) tentacles.

21. Rh-related hemolytic n ~ m i

of

the

newborn erythroblastosis

foetalis)

may

result when the

(a) mother is Rh negative and the foetus

is

Rh

positive

www.examrace.com


13/26


14/26

(c)

achro

m atic

d) ap o

ch rom

a

t

ic .

S6

.

rn a

n au

toacci

dent

the

driv

er

su

ffers

comp

lete se

ction

ing

of

sever

al

an

terior

(ven

tral)

root

.of spin

al

n e n ~ e s W

hat

w

ould be

th

ere

sult of su

ch a

les

ion t

o

the

regio

ns

suppll

ecl by th

ose sp

inal

nerv

es?

a)

loss o fsensation

b) l

oss of s

ensati

on

a

nd

m o to

r activi

ty

(c

) loss o

f tem p

erature

an

d p

ain se

nsation

d) loss

o f m o

tor acti

vity.

37

. Theplas

ma m

emb

rane

of plant

anc

l

a

nima

l

ce

lls

a) m

ay not

bes

een

by any

mi

crosco

pe

b)

contai

ns two

la yers

o

f lipi

d betw

een la

yers

of pr

ote in

(c)

is

ot

se

le

ctive ly p erm eable .

d) can

only be

visu

3lized

with th

e a id of

the

ele

ctron

m ic ros

cope.

38

.

follic

le sti

mulat

ing

h

OI'IbO

ne Is

to

estro

ge

n u lu t

e in iz i

ng h

ormo

ne

Is

to

a) vas

opress

in

b) te

sto ste

rone

c)

p

roges

te rone

{d)

and

rogen

.

39 . N

itroge

n com

prises

78

per

cent of

the

a

tmosp

here;

the

sourc

eof

th

is a

tmos

pheric nitrogen

In

clue

to

a)

d en itri

fication

b

yba

cteria

in the

soil

b) c

ombus

tionof

wo

od

and

f

ossil

fue

ls

(c)

volc

anic ac

tivity

d) al

l o fth e

ab o v

e .

Use

the

fo

llowi

ngd i

agram

to C

lf lSUie

r

qua

tion

40

-

42

P

Intr

apleur

al

~ 1 -

P .

ln tra -

alvaol

ar

40.

Durin

gin

spirat

ion, in

tra-alv

eolar

p

res-

sur (

Pe

lv

)

a ) equa

ls intr

apieur

alpres

sure

b ) equ

alsatm

osph

ericpr

essure

(c)

transie

ntly

goes be

lo w in

traple

ural pres

-

su

re

d)

tran

siently

go

es ab ov e

atmo

spheric

pres

su

re .

41.T

he alve

olar ve

ntilat

ion

perm

inut

e re

fen

to

the amo

unt o

f

esh

a

irwhich

reach

es

the alv

eoli o

f th

elu

ngs

pe

r m

in

ute.

Alveo

lar v

entila

tion

p

r min

ute

eq

uals

the

a)

tid

a

l

volum

e an

atom ic

dead

s

pace )

x

f

requen

cy of b

reathi

ng

b)

tidal v

olum e x

fr eq

uency

of brea

thing

(c)

n to

ic

deadspace

x

frequ en cy

of

breath

ing

d

) phy

siologi

c

dea

d sp

ace x

f

requen

cy of

bre.ath

in g.

4

2.

The

dr

iving

pres

sure

L\P)

In bre

th ln

g

wh

ich

ca

uses

air to

f low

Intothe

lu

ngs

Js

a

) atm o

spheri

c pre s

sure m

inus

the in t

ra

-a

l

veo

larpre

ssure

b) the intraple ura l pressure Ppl)

(c)

the in

traple u

ra l pr

essure

minus

the in

tra

alv e

olarpr

essure

d)

the i

ntra-al

veo lar

in tr a

pulmo

nary)

pres

sure P

alv).

Gene

tic r t

l ~ are

pr

obob l

l l ty

rati

o.. U

for

exam

ple, w

e mate

B

= blac

k

do

m i-

na

nt;

b

=

gr

ay

receu

lve) two

f1

U6b

lockCOUI

Bb)

and 4

oJ

1-prln

g t r

p

roduc

ed, th

e r

atio o

f

3

bla

ckan

d l gr y

should

be

possible

H ow ever,

what

are

th

ec

hance

s

of

a

ll blac

k and

all groy

te

rs?

43.

In

ord

er

fo

r

It

to

be

dete

rmine

d

whet

her th

ephen

otype

fs

het

erozyg

ous

or

hom

ozyg

ous

y

ou

wou

ld

c

ross

witha

d

omin

ant p

heno

type o

f t

he ab

ove

an

anim

al

wit

h

a

geno

type

a)bb

b)

B b

c) BB

{d )none

of th

e abo

ve

www.examrace.com


15/26

44. To produce all black cows

our chances

are

a) 9/16

c) 3/4

b) 1/4

d

) 81/256.

45. To produce all

gray

c o w t ~

our

chances

are

a) 9/16

c)

1/256

b) 3/4

d)

81/256.

The

following

graph Illustrates

several

phenomena

that

develop

while

a

mus

cle Is being

repetitively

6tlmulated

:

Match

the numbered

area of

the

graph

with the appropriate lettaed phenome-

non.

46. (1) ---------- {a) Treppe or staircase

phenomenon

.47. 2) ---------- b) Fatigue

48. 3)--------------- c) Physiological con

tracture.

49. _______

gtva

orlgta to

the U I ~

. 8Y8tem

a) Endoderm b) Mesoderm

c) Ectoderm

d) Ectoderm and Endoderm

50. Of

the following, which I not c o n l d ~

ered a membnmou organelle

?

(a) lysosome {b) mitochondrion

c)

ribosome (d) golgi

body

Directions:

Questions

(51 to

60

).

Consi6U of

tu10 .teltements, one labelled

the

A .

sertlons (A)

and

the other

labelled

the

Reoaon (R) .

Examine theae statements

care

fully

and

diode If

the

statements

A.-ertlon

AJ and the Reaon (R) are fndfofcfually

true .and f

60,

whether

the

Re060n . a correct e x p l a t ~ a t l o n o f

the

Aaertlon. Select

your answent

to

these questloM from

the

codes gfoen belOt.D.

(a) Both A

and

R are true

and

R i the correct explanation of A

(b) Both A and R are true but R

is

not a correct explanation of A

{c) A is true but R is false

d) A is false but R is true.

Assertion

51.

Persons of

AB

blood group are universal ac

ceptors because

w ~

52

. A

woman

of blood

group

AB when married

to an

0

group

man

will

never get

an AB group child be-

cause

a)

b) c)

53. Malaria

can

be Contained with the introduc

tion of larvicidal

fi

sh, Gambusia, in ponds,

tanks

and

puddles.

a) b ) {c)

54. Parturition is the process of giving birth to the

young

a) b) c)

55.The gestation period of a

h

en

is 21

days

Reasoning

They can receive blood from persons of all

blood groups

d)

Blood groups 0 gene is dominant

over

A, B, or

AB

d)

Gambusia is highly specific in devouring larvas

of

female

anoph

eles mosquitoes.

d)

Relaxlne is

an

ovarian hormone that is respon

sible for the loosening of the public symphysis

at the time of parturition.

d)

The optimum temperature required during this

period of 21 days is 3

7 C

www.examrace.com


16/26

a

)

b)

c

)

56.

D

uring the

p er

iod of w

ater depri

vation

on

th

e

de

sert. th

e ca

mel utilize

s w

ater store

d in

the

hu

mp on

its bac

k.

a)

b

)

c

57 .

lbe

reare

more

co

lour

b lind

men th

anwom

an

th rou

ghou t

t

he W

orld

a)

b)

c)

58. ln

c or ona

ry

heart dise

ase th

ere i

s im pa ir

m e n t

o

f hemt

m u

scle

a

)

b)

c

)

59. Mito

chond

ria ar

e believ

ed

to orig

inate

by

gr

ow th

and

d

ivisio

n

of

pr

eviousl

y exist

ing

ones .

a)

b)

c)

6

0.

AID

S

is

co n

s ide le

d to

be

o

n

of th

edeadli

est

diseases .

a)

b)

c)

d) .

Fa

tty subst

ance

o

ccurr in

g

in

t

he hump o

f the

cam

el follo

wing

metabo

l ism y

ield

wat

er

c

alled

m eta

bolic w

ater .

d

)

C olo

ur bl in

dness is

a se

x-linke

d dise

ase res

ult

in

g from

a rece

ssive

g

ene on

th

e

Y

chr

omo-

somes.

d).

Reduced

l

o o : ~

l y

d

).

They

conta

in

DNA

and

R

iboso m

es.

d

).

Its

virus

destro

ys

u

pr ss r

T lym

phocy

tes.

d).

PAR

T

IV. GEN

ERAl

K

Now

lEdGE

1

. Dodg

e is

tb

e

na

meof

(a )

Motor

-car

b) H ot

e l

(c)

Te

rm

in

s

ports (d

) None

of

th

e

abo

ve .

2. How

did

Li

aquat Ali

Kh

an

,

P

rimeM ins

ter

of

P

akis ta

n , die

in 1

9S I ?

a

) H

anged

after

a

bial

b)B y illn

ess

c) Assa

ssinate

d

d)

None of

these

.

3.

Bar

d of

Avon

is a

nickn

ame given

to

a) G.B.

S

haw

b

) Sh

akesp

eare

c

Winsto

n Chu

rchill

d ) S

he l ley.

4. Cutta

ck is loc

ated o

n

the bank

of

(a) G

oda va

r i

(b)

Mah

anadi

c)

Ka

veri

(d)

None

of

the

above.

5.

Wb

o

w

as

the

rec:

. p i

en t

or

Jawah

artalNe hr u

A

ward

for

Pe

act Inte

rnatio

na l u

ader-

studl

ag

for

t

he year 1990

?

(

a) Olaf

Palm e

b)

Vassar A

rafat

c}

Dr.

Helu

mt K

ohl

d)

Javie

r

P

erez d

e

C

uel la r.

6. Wl

llieb St

ate lea

ds in

India

in

the

produ

c t ion

.

of

gl

asswar

e

I

a)U.P

c) Kam

aWta

b) T

amil N

adu

(

d ) M ah

arash

tra.

1

W b i c h

of tbe

follo

wing r

iven

is no t a

t r ibu

ta

ry

oftb

e

Gan

ga?

a

) Kosi

c

)

G

om t i

b)

Y

amun

a

(d

) Teest

a.

8.

T

be

M

azgao

n Dock

ba s r e

eently

c ons t

ruc ted

(a ) O

ff-sho

re

drill

ing

pla

tforms

b

) Sub

marine

s (c)

Naval

sh

ips

(d )

No

ne o

f

the

abov

e

.

9 W l

lkll

oftlle

se pa

in is c

orrect

?

a) Jai

Sha

nkar Parsad

- Ka

mayan

i

b) Nan

k Sing

h

uide

c)

Rab

indra

Na

th

Tagore - Pa.nchtantra

d

)

V

iShnu

Shar

ma

-

eetanj

ali.

10. W

ho cre

a ted

th

e

c:h

arade

rMa

laprop

i l l' Tille

R

ivals

{a ) Dicke

ns

c) M a

rlowe

(b )

Sh

eridia

n

(d

) Non

e of

th

ese.

I I Wltod

iscove

red

transi

stor?

a ) Ga

lileo

b)

W. S hoc

kley

(c

) S ho le

s

(d ) No

ne

ofthese .

www.examrace.com


17/26

12. W

ho w as

the

ftnt I

ndian

to

h

ave rM

eived

No-

bel prize

.

(a) Ra

b

ind

ra

nath T

agore

(b ) C.

V Ram

an

(c )

Jai

S

hanker

Pr

asad

(d)G op

alKri

shan

Gokhle

.

13. T

btftnt In

dian f

ilm

was ma

dt in the

yea r

(a) 1933

(b )

1912

(c)

19

35.

(d )

1901

14. W

hat wa

s the

nam

e o

f thetown e

stablis

hed

by

A

kbar

(a)

A

gra

{

b Delhi

(c

) F

atehp

ur Si

kri (d

) N iza

m abad

.

1

5

. F

int te l

egraph

line

i

n

India

cam

ein to op

era

I

tioft

ia

(a) 1854

(b )1

851

(c)

1852

(

d 1850.

16. Th

e

B

ritish

Pri

me Mt

ntsta

dur

ing

w h

ose period

lnclla

ac

hieve

d In

de-

pend

encewas

(a

) < :leme

ntAtti

ee (

b) H

arold Wi

lson

c) A n

thony

E den

(d ) W

insto

n

C

hu

rchill.

17. T

ungab

badra

ProJ

ect ln

volva

the

e t t

o f

(

a

A n

dhra Pra

desh

a

nd

K

amata

ka

(

b) Andh

ra P r

adesh a

nd Ta

mil N

adu

(c)

amata

ka an

dM a

harash

tra

(d) A

ndh

ra P rade

sh and

Or

issa.

18. What

Is

the name

of

the

official new s-

pap

erof

Chin

eseComm

unist

Par ty

(a

) Red

Aa

g (b )

Pra

vada

(c) Izve

stia

(d ) P

eoples

Daily.

19

.

The big

ges t airp

ort

In the

w

or ld at

Dal-

la

s Is

situ

ated

In

(a

) U.S .A

(b )

U K

c) G

erman

y

(d

) Fran

ce.

20.

nck

th

e

c

ountr

y t

o wh

om

Alex

ander

Graham

B ell

the

inventor of telephone

belo

nged

(a)

I

t

aly

c) G

erman

y

(b )

Engla n

d

(

d ) U .S

N

SWE

RW

ITH H

INTS

&. E

XPL

ANAT

ION

S

PHY

SICS

l.(c)

I

1 3

1

4

F

20

+

20

=

20

. c

) Here

im age

will

be

form ed

at

its new focal

le

ng th

I

and

F

::=

20

=

Scm

4

'

This le

ns c

an be di

v id ent

in to two

piM


18/26

So.

~ e f f e c

1

1

1 1

2R

+ 2R

+

2R

1 1 1

3

=

- - ~

-

~ e f f e c t i

2R 2

R

2R

Rett

ectJve =

3

Her

e , no current

will

flow in 2

r{r+r

,

beca

use

this

will

behave

as

nullpoint circuit.

4 .a)

G

H

er e , r

is

radi

us

of loop

So,

area of

loop

=

~

There fore, its magnet ic mom ent

will

be

1 t ~

X i

5 . c)

6. c) H ere C1

and z are

in

series . Si

milarly C3

and c

are also in

series . This

whole setup is

i

n paralle

l.

So,

C =

~ z

C C

_ 2C C

2 - 2

B

Here, no

c

urrent

w

ill fol

low the

C

s p

ath be

cause it is

null point c

ircuit.

7 . a)

On

accoun

t

of

supe

r

po

sition the am

pli

tu de

s get

add

ed.

Since the tw

o waves trav

el

ling in

opposi te dir

ections are

sinuites they

produced

maximum

displacem ent

equal to

twice

the amplitude

of

ei ther.

8 . a )This is so

because

here vo lta

ge leads th e

curre

nt

by

n / 2in

phase

d

w eber

9 . a ) e= -

-d

or

volt

- - d

t

seco

n

1

10 . d)

Obtain the

value

of

m ag

netic field B

at

distance

x

from the

centre

of

the

coil on the

axis

. Find

the rate

o

f ch

ange of Bw

ith respect

t

o

x

= : .Put

ting the valu

e to zero give

s

x

=

Rt2 .

11.

a ) First thr

ee statem en

ts are correc

t. The

fo u

rth statem en

t

lo

ne is wrong,

the fri

nges

ared

ue to reflection

and

interfer

ence .

e

1.6x

10

-

19

12. b ) -

=

31

. Coulom

b/kg.

m

9 .1 x l0 -

13. b )

14. b) C hec

k dimensions

15 . b)

16

.

c

T he fall of

t emperatu

re from Hto

A is

the

sa

me as the fall

of temperat

ure from H t

o B.

H enc

e on joinin g

A

and Bby

the conducto

r,

no hea

t transfer will

take place

through the

conducto r

.

17 .

c) 18 .c) 19 .

a)

20

. a )21 .

a 22

. a)

23

. b

) Remember m

omentum fo

r photo n a

and m om en

tum for partic

le a

JE

.

1

24

. b ) Use th

e relahonp =

-

e n

nh

25

.

a ) The resulta

nt

of

force of gra

vi ty

an

d

force

of

inertia m

ust be 1 o th

e surface .

26

. c)

27

. b )

I f

the car accelerates for t i

m e t1.

then

at1

=

b t - t1)

28

. a ) Us

e the relation

1 2

1 2

P1 -

d v1

=

P

- dvz

2

2

for a horiz

ontal tube .

29

. a) R

eaction N h

as compon

ent

in

vertical

di-

rection

equal to the

weight

o

fth e

object. The

horizontal

compone

nt

of

N provid e

s t he cen

tripetal force . Now

{

can

be

calculated

30. c)

Force due to

surface tens

ion = 2 T

d2

Force

of

we

ight

of

need

le = 1t 4 x I

x p x g

E qua

te the two.

1

31. a ) At

the required

displacem en

t . the kinetic

energy =

x maxim um

kinet ic ener

gy. This

givessin

e= 11\F i

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aiims solved paper 1999

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