MOCK PLACEMENT TEST – 1
SECTION A : APTITUDE
1) A number when divided by 342 gives a reminder 47. When the same number is divided by 19, what would be the remainder?
a)9
b) 5
c) 11
d) data inadequate
ans : a
no = 342x+47
no/19 = (342x+47)/19=(19(18x+2)+9)/19
There fore the remainder is 9.
2) 461+462+463+464 is divisible by
a)3
b)10
c)11
d)13
ans : b
461(1+4+16+64)= 460*4*85=460*340
Hence divisible by 10
3) A, B, and C starts at the same time in the same direction to run around a circular stadium. A completes a round un 252 seconds, B
in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?
a) 26 min 18 sec
b) 42 min 36 sec
c) 45 min
d) 46 min 12 sec
ans: d
LCM of 252 , 308 and 198 will give you the time taken by them to meet again
=2772sec= 46min 12sec
4) Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get a alloy15
times as heavy as water.
a) 1:6
b) 2:3
c) 1:2
d) 3:2
ans : d
G=19W and C=9W
Let 1 gm of gold be mixed with x garams of copper to get 1+x grams of alloy
19W * 1 + 9W*x=(x+1)*15W
X= 2/3
Ratio of gold with copper = 1:2/3 = 3:2
5) If 5 engines consume 6 metric tones of coal when each is mining 9 hrs a day. How many metric tones of coal will be needed for 8
engines each running 10 hrs a day. If being given that 3 engines of former type consumes as much as 4 engines of the latter type.
a)3 and 1/8
b) 8
c) 8 and 8/9
d) 6 and 12/25
ANS : B
Let coal required be x metric tones
No of engines directly proportional to amount of coal
Working hrs directly proportional to amount of coal
Rate directly proportional to amount of coal
Engines 5:8
Hrs
9:10
Rate
1/3:1:4
 6:x
5*9*x*1/3=8*10*6*1/4
X=8
6) Two pipes A and B can fill a tank in 12 minutes and 15 minutes respectively. If both the taps are opened simultaneously, and the
tap A is closed after 3 minutes, then how much more time will It take to fill the tank by tap B?
a) 7min 15 sec
b) 7 min 45 sec
c) 8 min 5 sec
d) 8min 15 sec
ans : D
part filled in 3 mins = 3(1/12 +/15) = 3*9/60=9/20
remaining part = (1-9/20)=11/20
part filled by B in 1 min =1/15
1/15:11/20::1:x
X= 8min 15 sec
7) A man can count 21 telephone posts in 1 min. if they are known to be 50 meters apart, then at what speed is the train travelling?
a)63 km/hr
b)55 km/hr
c)60km/hr
d) 57 km/hr
ans: C
distance covered in 1 min = 20*50 (21 posts means 20 gaps between them) = 1000m
speed = (1000/60) (18/5)(conversion to km/hr) =60 km/hr
8) A train overtakes 2 persons who are walking along a railway track in the same direction as the train is going, at the rate of 2kmph
and 4kmph and passes them completely in 9 and 10 seconds respectively. The length of the train is:
a) 45m
b) 50m
c) 54m
d) 72m
ans: b
let x be the speed of train in kmph
relative velocity of train wrt 1st person = x-2
relative velocity of train wrt 2nd t person = x-4
equating the length of train  9*(x-2)(5/18)=10*(x-4)(5/18)
x=22kmph
length of train = 9*(22-2)*5/18=50m
9) A dairyman pays Rs 6.40 per litre of milk. He adds water and sells the mixture at Rs. 8 per litre, thereby making 37.5% profit. The
proportion of water to milk received by the customers is:
a) 1:10
b) 1:12
c) 1:15
d) 1:20
ans: a
mean cost price = 100*8/135.7= 64/11 (let this be x)
cost price of 1 liter of milk = rs 6.40
difference = x-6.40=64/110
cost price of 1 liter water = 0
difference = x-0=x
proportion of quantity = 64/110 : 64/11=1:10
10) The highest score in an innings was 3/11 of the total and the next highest was 3/11 of the remainder. If the scores differed by 9,
the total score was:
a)110
b)121
c)132
d) 143
ans: b
let total be x
heighest = 3*x/11
2nd heighest= (3/11)(x-3x/11)=24x/121
difference in score =3x/11- 24x/121 =9
(33-24)x=121*9
x=121
11 )find odd one out: 1, 5, 14, 30, 50, 55, 91
a)5
b)50
c)55
ans:b
series is such that a1= 12
a2=12+22=5 a3= 12+22+32=14 a4=12+22+32+42 =30
a5=12+22+32+42+52=55
Thus 50 is the odd one out
d) 91
12) In a race, the ratio of the speeds of two contestants A and B is 3:4. A has a start of 140m. Then, A wins by:
a) 60m
b)15m
c) 10m
d) 20 m
deleted
The total distance of the race should been have included in the question.
13)The calendar for the year 2005 is the same as for the year:
a) 2011
b)2012
c)2014
c)2010
ans:a
no of odd days from 2005
2005=1 2006=1
2007=1
2008=2
2009=1
making a total of 7 days
therefore 2011 will have same calendar as 2005
2010 =1
14)A watch which gains 5 second in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated
quarter past 4’0 clock, the true time is:
a) 59 7/12 min. past 3.
b) 4 p.m
c) 58 7/11 min. past 3
d) 2 3/11 min. past 4
ans: b
time from 7a.m to 4.15pm =9 hrs 15 min=37/4 hrs
3min 5 sec of this clock=3 min of the correct clock
ie 37/720 hrs of this clock= 1/20 hrs of the correct clock
37/4 hrs of this clock= (1*720*37)/(20*37*4)= 9 hrs of corrected clock
therefore 9hrs from 7 am = 4 p.m
15) In how many different ways can the letters of word ‘MACHINE’ be arranged so that the vowels may occupy only the odd
positions?
a)210
b) 576
c)14
4 d)1738
ans :b
there are 7 lettres in the given word out of which there are 3 vowles and 4 consonants.
mark the positions to be filled up as follows
(1) (2) (3) (4) (5) (6) (7)
now 3 vowels can be placed at any of the three places, out of the 4 marked 1,3,5,7
no of ways of arranging vowels = 4P3 = 24
also consonants at the 4 remaining positions can be arranged in 4P4 ways = 24
required ways = 24*24 =576
16) How many times do the hands of a clock coincide in a day?
a) 20
b) 21
c) 22
d)24
ans : c
17) find the wrong no in the series
888, 440, 216, 104, 48, 22, 6
a) 22
b) 440
c) 216
b)104
ans:a
2nd term= (1st term -8)/2=440
3rd term= (2nd term -8)/2=216
4th term= (3rd term -8)/2=104
5th term= (4th term -8)/2=48
6th term= (5th term -8)/2=20
Therefore 22 is wrong
18) The least multiple of 7, which leaves a remainder of 4, when divided by 6,9,15 and 18 is :
a) 74
b)94
c) 184
d)364
ans : LCM of 6,9,15,18 is 90
let required no = 90k+4 which is a multiple of 7
least value of k for which 90k+4 is divisible by 7 is k=4
there fore required no is 90*4+4 =364
19) The batting average for 40 innings of a cricket player is 50 runs. His highest score exceeds his lowest score by 172 runs. If these
2 innings are excluded, the average of the remaining 38 innings is 48 runs. The highest score of player is
a) 165 runs
b) 170 runs
c) 172 runs
d) 174 runs
ans:d
let highest score be x; lowest score = x-172
then 50*40-(x+(x-172))=38*48
2x=2000+172-1824 =384
X=174
20) In a family there are several children. Each boy in this family has as many sisters as brothers, but each girl has twice as many
brothers as sisters. How many boys and girls are they?
a) 3 boys & 2 girls
b) 4 boys and 3 girls
c) 6 boys and 5 girls
d) 5 boys and 4 girls
ans b
let the no of boys be x and girls y
no of brothers for a boy = x-1
no of sisters for a boy =y
there fore x-1=y eqn 1
no of sisters for a girl = y-1
no of brothers for a girl=x
x=2(y-1)
solving we get x=4 and y=3
21) In A,B,C are having some marbles with each of them. A has given B & C the same number of marbles each of them already
have. Then, B gave C & A the same number of marbles they already have. Then C gave A & B the same number of marbles they
already have. At the end A,B,& C have equal number of marbles.
If x,y,z are the marbles initially with A,B,C respectively.
Then the number of marbles B have at the end.
(a) 2(x-y-z)
(b) 4(x-y-z)
(c) 2(3y-x-z)
(d) x + y-z
Ans can be b or c
After 1st exchange no of marbles with A=x-y-z, with B=2y, and with C=2z
After 2nd marbles with A=2(x-y-z) with B=3y-z-x with C= 4z
After 3rd marbles with A=4(x-y-z) with B= 2(3y-x-z) with C=7z-x-y
Since all have same no at the end b as well as c is true
Read the statement below and answer q22 and q23:
a
6 people A,B,C,D,E and F sit around a table for dinner. Since A does not like C, he doesn't sit either opposite or beside C. B and F
always like to sit opposite each other.
22) If A is beside F then who are the two neighbours of B?
(a) D and C
(b) E and C
(c) D and E
(d) Either (a) or (b)
Ans. (c)
A
a
E
D
a
F
a
C
B
a
F
C
B
a
a
a
E
a
D
23) If D is adjacent to F then who is adjacent to C?
(a) E and B (b) D and A
(c) D and B (d) either (a) or (c)
Ans: d
A
A
a
D
a
E
a
B
a
B
B
C
F
C
F
a
a
E
D
24) Two dice are tossed. The probability that the total score is a prime number is:
a) 1/6
b)1/2
c)7/9
d)5/12
deleted
favourable outcomes= 2 3 5 7 11
sample space= 2,3,4,5,6,7,8,9,10,11,12
p(event) =5/11
25) A boat covers 24 km upstream and 36 km downstream in 6 hrs while it covers 36 km upstream and 24 km downstream in 6 hrs
30 min The velocity of the current is( in kmph):
a) 1
b)1.5
c)2.5
d)2
ans:d
speed of stream=y, speed of boat=x
upstream speed =x-y
downstream speed =x+y
let 1/(x+y)=u and 1/(x-y)=v
24v+36u=6
--1
36v+24u=6.5 --2
(2) – (1)  12v-12u= ½ v-u= 1/24
(1)+(2)  60v+60u=12.5  v+u= 5/24
V=1/8; u=1/12
X+y=12;x-y=8
There y=2kmph
Directions : Each of the question (q26 to q30) given below consist of a question followed by three statements. You have to
study the question and statements and decide which statement(s) is/are necessary to answer the given question.
26) What is the 2 digit number?
I. sum of the digits is 7.
II. Difference between the number and the number obtained by interchanging the digits is 9.
III. Digit in the tens place is bigger and units place by 1.
a) I and II only.
b) II and III only
c) I and III only
d) All I, II and III
Ans:e
Let the no by 10x+y
I)x+y=7
II) 10x+y -10y-x=99x-9y=9 x-y=1
III)X=y+1 x-y=1
Since II and III are the same (e) is the option.
27) What is the speed of the boat in still water?
I. The speed of downstream is 12kmph.
II. The speed of upstream is 4kmph.
III. In a to and fro journey between 2 points, the average speed of the boat was 6kmph.
a) I and II only.
b) All I, II and III
c) III, and either I or II
d) Any 2 of these
Ans: d
Let speed of boat=x
Speed of stream =y
I)x+y=12
II)x-y=4
III)2d/(d/(x+y) +d/(x-y)) =6 x2-6x-y2=0
Thus from any 2 above equations you`ll get the result.
(d) is hence the ans
28) What is the speed of the train?
I. The train crosses a tree in 13 seconds
II. The train crosses a platform of length 250m in 27 seconds.
III. The train crosses another train running in the same direction in 27 seconds.
a) I and II only
b) II and III only
c) I and III only
d) any 2 of these
e) I and either II or III
e) none of these.
e) none of these
ans:a
let speed of train be s, length of train x.
from (I) s=x/13
from(II) s=(x+250)/27
In (III) other trains not mentioned if its of same length as the former one.
There only (I) and (II) from we can solve for s
29) In how many days can 10 women finish a work?
I. 10 men can complete the work in 6 days.
II. 10 men and 10 women together can complete the work in 3 3/7 days.
III. if 10 men work for 3 days and there after 10 women replace them , the remaining work is completed in 4 days.
a) any 2 of the three
b) I and II only
c) II and III only
d) I and III only
e) None of these
ans:a
let the work done by a man in one day be x and by woman y
from (I) 10*x*6= w
from (II) (10x+10y)24/7=w
from (III) 10*3*x + 10*y*4=w
from any 2 equations above you can find w/10y
30) What was the percentage of discount given ?
I. 23.5% profit was earned by selling the item for RS 12,350.
II. If there were no discount, the earned profit would have been 30%.
III. The cost price of the item was RS 10,000.
a) Only I and II
b) only II and III
c) only I and III
ans: e
from I) you can find the cost price
from III) cost price is give
effective I and III are the same
hence the ans is II and either I or III
SECTION B : TECHNICAL
Time : 20 minutes
1) main()
{ int a,b;
if(a=b=0)
printf("Hello");
else
printf("World");
}
The output of the program is :
a)Hello b) World c) world d) hello e) error
ans b
if(a=b=0) is equivalent to if(0)
hence goes to else part
and prints World.
2) #include<stdio.h>
main()
{char s[]={'a','b','c','\n','c','\0'};
char *p,*str,*str1;
p=&s[3];
str=p;
str1=s;
printf("%c",++*p + ++*str1-32);
}
The output of the program is :
a. O, b. P, c. A, d. M, e. Error
Ans d
*p= ‘\n’
ASCII of ‘\n’ =10
*str1=’a’
ASCII of ‘a’ =97
++*p + ++*str1-32 11+98-32=77
Character M has ASCII 77
3) main()
{static char s[25]=”The cocaine man”;
d) any 2 of the 3
e) none of these
int i=0;char ch;
ch=s[++i];
ch=s[i++];
ch=i++[s];
printf(“%c %d\n”,ch,i);
}
The output of the program is :
a. h 1, b. h 2, c. e 3, d. c 3, e. Error
Ans: c. e 3
Explanation: i++[s] is assigned to ch. This is evaluated just as s[i++]. At first value of I, i.e 2[s] =e. Then I is incremented
to 3.
4. main()
{static char s[]=”Rendezvous !”;
printf(“%d”,*(s+strlen(s)));
}
The output of the program is :
a. Rendezvous !, b. \0, c. \, d. 0, e. Error
Ans : d. 0, strlen returns the length of the string i.e 12 which would be added to the s. The next address contains \0 and
the ASCII value of \0 i.e 0.
5. main()
{static char *mess[]={“Some love one”, ”Some love two”, “I love you”, “That is you”};
printf(“%d %d”, sizeof(mess), sizeof(mess[1]));
}
The output of the program is :
a. 2 2, b. 4 2, c. Error, d. 4 4, e. 8 2
Ans: e. 8 2, each address is 2 byte long. There are 4 addresses in mess. So sizeof(mess) yields 8 and sizeof(mess[1]) gives
2.
6. main()
{int i=32,j=65,k; k=i|35;
printf(“%d ”,k);
k=~k;
printf(“ %d ”,k);
k=i&j;
printf(“ %d ”,k);
}
The output of the program is :
a. 67 -3 1,b. 35 -36 0, c. 3 3 0, d. 1 1 0, e. 0 0 0
Ans b. 35 -36 0 Explanations covert numbers to binary and do bitwise operation. | - Bitwise or, & - Bitwise and, ~ Bitwise not
7. main()
{int a=0xff;
if(a<<4>>12) printf(“Leftist”);
else printf(“Rightist”);
}
The output of the program is :
a. leftist, b. rightist, c.error, d. Rightist, e. Leftist
Ans : d. Rightist Explanation: Convert 0xff to binary. Left shift is performed 1st and then right shift.
8. #define CUBE (X) (X*X*X)
main()
{int a,b=3;
a=CUBE(b++)/b++;
printf(“a=%d b=%d”,a,b);
}
The output of the program is :
a. a = 9 b = 7, b. a = 16 b=4, c. a = 10 b = 6, d. a = 10 b = 7, e. a = 10 b = 8
Ans: a. Explanation: ++ is post increment. Actual operation done is a=3*3*3/3=9 followed by 4 increments to b, i.e b=7.
9. main()
{int c=0,d=5,e=10,a;a=c>1?d>1||e>1?100:200:300;
printf(“%d”,a);
}
The output of the program is :
a. 100, b. 200, c. 300, d. Error, e. 0
Ans: 300 Explanation: Convert the statement using if .. else.
10. main()
{ float a=0.7;
If(a<0.7) printf(“Stoned”); else printf(“Avenged”);
}
The output of the program is :
a. Stoned, b. Avenged, c. Compiler error, d. Runtime error, e. Linker Error
Ans. A due to precision consideration a will be less than 0.7
11. main()
{int i;
printf("%d",scanf("%d",&i)); // value 10 is given as input here
}
The output of the program is :
a. 1, b. 10, c. 1010, d. 0, e. Error
Ans: a. scanf returns the number of inputs inside a printf.
12) It is desired to multiply the numbers 0AH by 0BH and store the result in the accumulator. The numbers are available in registers
B and C respectively. A Part of
the 8085 program for this purpose is given below:
MVI A, 00H
Loop;- - - - - - - - ——————–
——————HLT END
The sequence of instruction to the complete the program would be
A) JNZ LOOP, ADD B, DCR C
C) DCR C, JNZ LOOP, ADD B
B) ADD S, JNZ LOOP, DCR C
D) ADD B, DCR C, JNZ LOOP
Ans:d
13) The band gap of Silicon at room temperature is
a) 1.3 eV
b) 0.7 eV
c) 1.1 eV
d) 1.4 eV
ans:c
14) Which has least propagation delay ?
a) ECL
b) TTL
c) RTL
d) CMOS
ans:a
15) Fan out the highest for :
a) TTL
b) CMOS
ans:b
c) ECL
d) Schottky TTL
16) Which is the world's first commercial single chip micro processor ?
a) Zilog Z80
b) Intel 4001
c) Intel 4004
d)Motorola 6502
ans:c
17) 5 The 8085 assembly language instruction that stores the
content of H and L registers into the memory locations 2050H and 2051H,
respectively, is
A) SPHL 2050H
B)SPHL2051H
C) SHLD 2050H
D) STAX 2050H
Ans c
18) Flag that is not affected by DCR:
a) Z
b)CY
c) S
d)P
ans:b
19) What is the call location of the interrupt TRAP ?
a) 0024H
b) 003CH
c) 0034H
d) 002CH
ans:a
20) A master-slave flip-flop has the characteristic that
a) change in the input immediately reflected in the output
b) change in the output occurs when the state of the master is affected
c) change in the output occurs when the state of the slave is affected
d) both the master and the slave states are affected at the same time
Ans c
SECTION C : VERBAL ABILITY
Time : 10 minutes
1) CURIOSITY : KNOW ::
a) temptation : conquer
b) wanderlust : travel
c) starvation : eat
d) humor : laugh
e) survival : live
c) famous : aggressive
d) rash : foolhardy
e)quiet : timid
ans b
2) FRUGAL : MISERLY ::
a) confident : arrogant
b) courageous : pugnacious
ans: a
3) ANTIDOTE : POISON ::
a) cure : recovery
ans:d
4) Antonym of Acerbity
b) narcotic : sleep
(a) noteworthiness
Ans:c
5) Antonym of INVETERATE:
a.casual
b. public
ans: a
6) Antonym of FALLACY:
c) stimulant : relapse
(b) hypocrisy
d)tonic : lethargy
(c) mildness of temperament
c. satisfactory
d.trustworthy
e) resuscitation : breathing
(d) lack of anxiety
e. sophisticated
a) personal philosophy
b. imaginative idea
c. unconfirmed theory
d. tentative opinion
e. valid argument
ans e
7) The ______ science of seismology has grown just enough so that the first overly bold theories have been ______ .
a) magnetic . . accepted b) fledgling . . refuted
c) tentative . . analyzed
d) predictive . . protected e)exploratory . . recalled
ans:b
8) Since 1813 reaction to Jane Austen's novels has oscillated between ______ and condescension; but in general later writers have
esteemed her works more highly than did most of her literary ______.
a. dismissal..admirers b. adoration..contemporaries c. disapproval..readers d. indifference..followers e. approbation..precursors
ans:b
9) Although in eighteenth-century England an active cultural life accompanied the beginnings of middle class consumerism,
the_________ of literacy was______ with the rise of such consumerism in the different areas of the country.
(a)repudiation....reconciled
(b)renewal....inconsistent
(c)promotion....combined
(d)spread....compatible
(e)degree....uncorrelated
Ans:e
10) That many of the important laws of science were discovered during experiments designed to _________ other phenomena
suggests that experimental results are the __________of inevitable natural forces rather than of planning.
(a)analyze....foundations
Ans:d
b)disprove....predecessors
(c)alter....adjuncts
(d)illuminate....consequence
(e)verify....essence