MDFSI5A, MGFSI 5A - MID PH -2 - P - ? -

t .

2.

Part - A

A bov sitting in ec-'ing ar constan, "","it;?l;#tXilra,L:ttfftuL into the air. where w'l the ba, fa'?(a) Bflrn (b) into his huil 1c; in aont of him (d) towards the left

A ship of rc 3x107 kg initially at rest, is pulled by a force of 5x l04N through a distance of 3 m. Assuming thar seresisere&eto water is negligible, the:peed of the ship is:(e) lJ m/s 6; eo mls --r

(c) 0.1 m/s (d) 5.m/s

3' A body of mass 2 kg moves with an accereration of 20 ms-z . The rate of change of momentum in SI units is:(a) 40kg ms-2 (b) l0kg ms-2 (c) 20kg ms-z (d) lkg ms-z

1- In figure three bodies are shown connected to eachstrings. They are being pulled with a force F on ahorizontal surface- The tension p in the first

"tring i,

tension Q in the second string is:

other withfrictionless16 N. The

F

- l m

o- rnl*fuc l3-f ftrqeoctfrrcry rc Gdb t*ocods ofa lightl -= sring p'sfrng o pdd.. te-eegqrio{r iqLthe string is:,'ilF \a) | itrs-: (b) z nts-z

- , \' '^'i:.i{' -1q__*.

7' A bloct ofs6 gary&rrhqdhrro &hsk bdrcq A ad B- ThcnrcadnsF cif,btwtc:

(c) 3 nrs-r

(zl Ofu;zaofo(c) zaofo;4[g.,

(d) 2.5 rns-r

(b) 3h5 3k(d) 6tg;6k \

vf-l 6 ks

8' A machine gun fires a bullet of mass 40 g with a velocity L2a0 ms-t. The man holding it can exef,t maximum force of144 N on the gun. How many bullets can be fired per second at the most?(u) Q-" (b) Four (c) Two (d) Three

9. An unbalanced force is necessary for an object to be:(a) at resr(c) accelerated

(b) in motion with a constant velocitv(d) all of the preceding

1.( a ) l 6 N / h l l o N L )(b)loN (c)/rN (d)2N +/

5' A 20 gram butlet pierces throush a plare of mass t tt d rb G ro rcg imide a second plare of mass 2-9t a* ul{'found that t*'o plates initiallv ; rcsr' .,oE EoE ril - rdFiy- hd tc F".nrage toss in the initial r.etcirl. of rbcbullet * hen it is between the two pt .- A* -=# f." F ,.*"in .onEanr e*en on siking rtE hdlcr(et75.tl Gr2'*

- -flir_r. (d) 50 1l _l

i * iIIt9-

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Plaza), Nungambakkam High Road, mbakkam, Chennai - 600 034.

II

10.

1 1 .

MDFSI5A, MGFSIsA -2f Argust' 2OI I

(blHy proportional to the apptid fGE

({I t*ow

(d) nct of inertia

A gun of mass 5 8ft6 r 50 g hllet with e Elbcl' ' o---

(a) zmls &) 20 n/sof2lDd$ Tbddocit-v of the gun is:

(c)O2* (d) zero

12. Find acceleratim-of4 !3lE.(a) 5J?-- 9J ltt,YJGi s:hrJ (d) 8 ds'

13.Newton,sfir$lawofdiodescrib€swhichofthefoltowing?(a) energ &) work (c) inertia

The accelerari<n of a did is

a) imcrdYFqafiE blsrc

(c) rcddbtiErb

16. Find oorrect o6ion(a) Mutual contact force betrveen A & B is 51 N

' (b) Mutual coutact force between A & B is 13 N

(c) Mutual contact force between B & C is 21 N

(d) Mutual contact force between B & C is 13 N *

l

14. Two masses oi4 kg and 5 kq *: connected by a string passing through a frictionless

pulley and are k;;; fti.iont"r, iuUr" "t

'ito*n U"io*' Tf,en acceleration of blocks is

(Tdke g = 9'8' i" )

(a) a9 m| s2 (b) 5 '44m\s2

(c ) 19-5 mts2 (d ) 2 '72mls2

15. A player takes 0.1 sec in catching a ball of mass 150 g moving with a velocity of 20 m/s'

on-the hands of the PlaYer is:(a) 0.3 N (b) 3 N (c) 30 N

Oneormore thanonecor rec top t ionquest ions

The force imParted bY the ball

(d) 300 N

- c

w n ' W ,w n = W ,

8 kg block is 3 m/s' r8 kg block is 5'66 m/s"

stririg between 7 kg and 8 kg is 14 N

strin! between 7 kg and 8 kg is 21 N

1sN

60 N -)--o' ' - ' [Tui too" I to* 1

l7- Itlark the correct statement(s) regarding friction'

. (a)Friction force can be ,"ro,""""n though the contact surface is rough'

(b)Even though there is no relative motion betrveen surfaces, frictional force may exist betwwn them'

(c)Friction always acts opposite to the direction of motion

iO Static Friction is a self adjusting force

ls .TwovesselsAandBofdi f ferentshapeshavethesamebaseareaandaref i l ledtoaheight, f t ' .TheforcesexertedbywateronthebasesareF n and{ respectively and the weights of the liquids are W o & W '

resPectivelY. Then:

@) Fn> F,

(c) Fn= F,

19. Find the correct oPtion(a) The acceleration of

(b) The acceleration of(c) The Tension in the

(d) The Tension in the

(b)

(d)

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M D F S I 5 A , M G F S I 5 A _ M I D P H _ 2 - P - 4 - 20 t t Augus t , 201 I

Chemistry Section - ll

al1 .

Art'.t-

lzlt i

\ ;(") Mt

\ 4. Gmms of 'S' present in 9gg HrSOo is(a) 28 g

Part - A

Single Answer euestionsIf the valency of a E t{ is 3, then the formula of its surphate is

(a) tvfsO. (b) M2so4 (.) M, (soo),How rnany ddq* can a phosphorus atom gain to form phosphide ion?

(a) I @, (c)3

A neurrrl aom loses 2 e-. The type of ion formed will be:

(b) M*t

(b) 32g

(") M*

(c) a8g

(c) 32g

(c) 16 amu

(c) 699

(c) HrPOo

(c) KCIO,

(d) M3so4

(d) 4

(d) M*

(d) 169

- (d) 88g

(d) 8e

(d) l69

( d ) l l g

(d) NaOH

(d) Kclo3

5- t

on heating 50g of caco'the amount of co, produced wiil be@) a4e 1u) I lg ( c) 22e

Lx*

6.'12.259otKCIO,onhearingprodu-ies2.459ofKCIandsomeamounrofox1_ger.Theweighrofoxyg-engasprodrcd

will be:

F, (a) 5g ft) a.8g k) 3.re (d) s.8g

?- \\ten 39of 'c'isbumr in 8g ofox;gen- lrg ofcaftsdoride b podrccd- \\rrai*i1 bethemassof co, prodrced,. .

"t _,9 of 'C' k h *ith rtO g of or13a?

,\ GD€s

-ol ztg (d ug (d) aae

i. The chemicat fo.*utu ll"ii"iu. phosphate will be

I (a) caPo' (b) ca.Por (") ca-. (Po, ). 1ay ca(ro.,;,

':. li I oicanosrcdddb.dcrFra-, tb ir fuD.d ril| hc) (.) O{

- O) O.r (") O-t (a) o-,10. ll g of C c_lri3 rf lQgdcllla pSiG 4a! ofc_hoa dorib. ftb is in confiru.aiqr of(r)Ltd@nir (fc'w _-

- -- Ol r.- of csrsqradon of mass

- (c)Lrrdmrpq-Col l bw of orftiplc popcil

t 1'' cflB 11m:

corsirr in tlrc raio of 3:4 ro form carbq mcroxi&. The mass of oxygren rGquircd ro complercry react(a) 169 (b) a8gv7

12.'Thegram molecular mass of oxygen is(a) 32 amu g)32g

A:. The mass number of .Na' in 53g of NarCO, is(a) 23 g g) a6g

i-1.'HrSOo h* the same molecular mass as

^ (a) HCt '

&) HNO3)

l-s. The formula for potassium chlorate is(a) KCI (b) KClo

, qL

z3- -

--t,

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MDFSI 5A, MGFSI 54 - MID PH -Z _ ? - 5 - PCBII 2(F Aurusq ril

Orc or rort thr .I crnc _rtr rpriot e[estiotr16. Which of the follo\r.ing tatemetrr's are true abon C0, ? )'

trZ Iaw ofconstant proponioo indicares about(a) the sao'€ propoiion ftv- mass) of combinario of cteams ir e rf,coii:ar compound(b) the independeoct of the sourcc froo *tich thc compooad b fgd(c) the energl ofreacrants and producrs(d) the indepcndeace of rhe merhod o;L- rrtich rhc compound is prqercd

18. Which ofthe follou'ing srb*ances can be ca[ed as molecule?

.% (a) HrO (b) H2SO1 (.) O: (d) POi19' If a substance forms the follouing compounds. rvhat would be the ralency of that subEance?

u, (roo), M,S(b) 2

Section - III

b ,T:t h{so{

Biology

( " )3 t (d) 4

(\

l. Natural sources of air pollution are:(a) Pesticides and fungicides(c) Buming of fuel and smoke

9lncrease in the percentage of fauna and decrease in flora

- Pa r t -ASingle answer type questions

(a) Diseases

:.: : ': - s -e caused bu -f.

r 3 l Ozone ' J

tc) Carbon di-oxide

(b) Vehicles and industry l(d) volcanic eruptions and forestf.,r:,':!

may, be dangerous because it enhances the percentage of:, : i P . = : ' . _ r : : . ' , : i = ' i - , : . : r j , _ - : : f . : . . : , _ : . ' : :

(b) Carbon monoxide(d) Sulphur di-oxide and Nitrogen di-oxide

f b) Or, . sei r

F

N

"i:.: a:e the chief pollutants of the atmosphere which are most likely to deplete the ozone layer?

(a) Sulphur di-oxide (b) carbon di-oxide(c) Carbon monoxide '/ (d) Nitrogen oxides and fluorocarbons

5 .

6 .

Excessive accumulation of organic matter in(a) Green house effect(c) lncrease in species diversity

rvater bodies leads to: -l

(b) Decrease in species diversity(d) No effect in species diversity

7.

The life supporting gases such as 02, CO2 and N2 are chiefly concentrated in the_.2 @) troposphere (b) exosphere (c) homospt"." (d) stratosphere

A biosphere reserve conserves and preserves(a) wi ld animals (b) wi ld land (c) natural vegetation (d) allthe above

8' The dramatic increases in agricultural production that have been made possible by high yield.miracle crops,, are called the

(a) biotechnical revolution(c) green revolution

9. Approxim ately 70 percent of the earthfor human use.

(a)2.s% ')(c) 97.5% (d)less than one

10. Conservation is(a) judicious use of natural resources(c) management of natural resources

2is covered by

(b)1.s%

(b) greenhouse effect(d) bioeconomic revolution

water. of this amount, approximately _ p€rcent of it is suitable

(b) protection of natural resources(d) al l of the above

Regional Head Quarters: fl[J€€ TowERS,]ro.3.I,.1!3!9,(N9-, oo"^ tt"r"l,*". ,r, Higt,

MDFSI 5A, MCFSI 5A - MID PH -2 - P - 6 - PCBM 20th August, 201 I

+ lo One or more thrn one ooorect optiotr qucstiotrlt

1 1- Which tftre" oftho following arc oft€n refened to as 'renewable' energt sources?(a) Solar (b) Oil

12. Deforestation results in

A (a) Increesd soil erosion(c) extinaion of plant species

(c)Wave

(b) ftood(d) drought

(d)wind

(@ decrease in concentration of ozone(d) huge amount of CFCs in atmosphere

13. The fertilitv of the soil is reduced due to

r ̂ (a) blue green algae @ soil erosionY/ (e) growth of single crop in the same land successively (d) ninogen fixing bacteria

L4. Omrc hole means

\ (a) thinning of ozone layer-

(c) hole in the stratosphere

Mathernatics Section -. [V

i;Part - A

Single Answer QuestionsIn the given figure, if /r l l /r, then c+p+1=

(a) l8oo (b) 2700

(c) 3600 (d) < 2700

l- The angle between tlre bisectors of tlre two acute angles of a right triangle is

I. (a) 1200

The side BC of AABC is produced to

L.trLC =' (r) lOd

In thc giwn ftrrc, AB dlAs .4),AC

(") d(c) 620

'D'. The bisector of ZA meets BC in L.

G) l lo' (c) l20f

-fu rlb 2 : 5 dAB : DB. thcn'x- =

o) 56'(d) ld

(d) 9oo

If IABC = 500 , IACD = 1300,

(d) 9ooE

&) 13so @ nzl

IT .

then

5-) In the figure, relation between x, y, z is( i ) * + y + z = l 8 o o ( b ) * + 2 = 1 8 0 0 - y

( c ) x * z = 1 8 0 0 + y ( d ) x + y + z = 2 7 A 0

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2q,

MDFSI 54, MGFS|SA-Dtl _2 _? _ 7 _ Fm

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2(F Argust, 20 | |The angle ben ft ht Je r- oru*:[y ol'll.rr- -hs i

(") dts

o) 4f (c) f (d) lsooIf. 'x' isgreacrhYffclidoftrighrdcd.r'btbrlTCF-rof .y,,thenthevalueofx_yis

(d lof G) 3d tcl zf (d) eonSum of exterior qlcrdethlc i,

(a) t8d (b)z,f (c) 36d (d) 5400n

llff,Yt" liE -rH !t r kr+ rta rtc q'tlrqrt fr.-.d b rhc riseclqs of two pairs of inicrior

(a) sqlae (b) r€ctegle (c) rhomhs (d) prellelogram

I10. In the gr"en figrrc, AurBc and AN is the bisector of /.A- IflB = 400 , lC= 30., rhco 4VL{N =

(a) 55o

(") f

In the given figure, rays OA, OB,

IBOC = 100", ICOD = x" and

G) l too(d) 600

OC and OD are such that ZAOB= 56",/DOA='14", then the value of x" is

(b) 120(d) 140

t .1 ;,.1

l

1 1 .

\(a) 100(c) I -30

I

:'t"!1

t2.

rwd-dlda+.Hx.:-,.

In AAff. lA= 600, Z.B = g0o, then the triangle is(a) obtuse triangle

13. In the given figure, supplement of angle .x' is

In AABC, if ZABC = 600, /.ACB= 300. then(a) AC is the shortest side(c) AB is the longest side

In the figure, if AB llGE llCD and GH llEF, rhen(a) if IABH = 600, then ZGEF = l20o(b) if I.ABH = 600, then ZGEF = 600(c) /BGE = /.ABH(d) ZGCD = I.ABH

(b) right triangle (c) acute triangle (d) isosceles triangle

(b) I l0o(d) 900

(b) BC is the lorrgest side(d) none ofthese

(a) 700(c) l80o

t4.

1 5 .

I

i

i

i

MDfSI 5A, MCFSIsA - MID Ptl -2 - P - 8 - PCBM 20th August' 2Ol I, t -

I 6. If 'X' urd 'Y' are two poirs o equal sides of AB and AC of a AABC such that AX = AY' theh

(a) AX = XC (b) AY: YB

L7. In AABC, extrritr ll|.bgreaterthantwicethe lC, then

(a) AC >AB (b) AC < AB

18. In AABC, A+8=1200, lB- lA=400, then

(r)AB > AC

t 9. In AArc, AC = AB, the bisector of lA meefs BC at 'E', then

(a) BE > CE (b) BE < CE

ZO. AD,BE and CF be the median of AABC' then

(a) 3(AB +BC+AC) . +(eP +BE +cF)

(c) either (a) or (b)

..-.-.,-...* {$+tk*.fi*",,-r-*= : ';(c) AABC is equilateral, if IBAD = 300

In an equilateral triangle(defberc4nl in lergth

, (4*-qd-hf. r " , , ; Jh ! , "

in AABC, ZA={]f, dfi'fr, sDl|c lbftrirGlc

(+ AABD is isodcstiCts tirtlc

(c) AABC is isomdcs right tri.nglc

@l.c< Bc

1u) 2(AD+BE +cF) .3(AB-rBC+CA)

(d) both (a) and (b)

(b) AB: BC(.0 AABC isequilateral,if II,AD=450

\

(b) angular bisectors are equal in length(d) oty (a) and (b)

(b) ABDC is ismlcs righ triangle

I(d) BD =:AC

2

(c) XC: YB

(c) AC: AB

(c) AB > BC

(c) BE: CE

(d) AABC is equilateral

(d) none ofthese

(d) BC > AC

(d) none ofthese

\ :

i .

l:i

i:jIIt

21 .

22.

One or more than one correct option questions

If the arms of one angle a.e respeaivety parallel to the arms of another angle, then angles may be

(a) e+ral ft) complementary (c) supplementary (d) with sum 2700

ABC is a triag;c h rrhich AB=AC .nd D is arry point qr the side AB. Through D a line is drawn parallel to BC and

intersecting Aa - E- Th rlicf dfu fouoving idare t-ue '

ril 4ADE = ^/:D,il, O)ATFAE (c) DB : EC (d) None of these

Is AA4'|btbADbrc- Tb,F- . +

-+ - { -

t

1' - + .

t5 .

27.

28.

26. AABC, ADBC arc two isosceles rianglcs with same ba$ BC, 6Gn

(a) AD bisects BC (b) ADtBc (c) BC bisects AD

(c) QR< PR

A

(d) AD bisccts IBDC

(d) PQ is the smallest side

B

In APQR, lP =500, lQ =1000, then

( p ) P Q < Q R € ) P R > P Q

In the adjacent figure, ABIICE ll U, BG llFH then

( a ) x + y - - z + k ( b ) i f x = 1 2 0 0 ,

(c) if x = 900, then CE t FH (d) if k = 400,

then z = 600

then z = 400

*******

flffrC€ TOWERS, No.3, First Lane, High Road, Nungambakkam, Chennai - 600 034.

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