Physics questions and answers

Physics questions and answers

Q1. Two bodies changed from p1v1 to p2v2 state in two ways. The heat supplied is delta Q and work done is delta W
Then what is constant in these two processes

(a) delta q
(b) delta w
(c) delta q + delta w
(d) delta q - delta w

Ans. (d)


Q2. _______ have same atomic number and same mass number are

(a) Isotopes
(b) Isotones
(c) Isomers
(d) Isobars

Ans. (c)


Q3. When a free electron is placed in a plane of electro magnetic then it moves in

(a) in the direction of the electric field
(b) in the direction of magnetic field
(c) of propagation of wave
(d) of the plane containing magnetic field and propagation direction.


Q4. Name the phenomena in which one proton is jumped from one isomer to another isomer to create two different elements

(a) functional isomerisim
(b) sterio merisim
(c) tauto merisim
(d) penta merisim

Ans. (c)


Q5. In the below compounds which one has 40% C ,6.7% H and 53.3 % O what is its empherical formula

(a) CHO
(b) CH2
(c) C2H2O2
(d) C2H3O2

Ans: (b)


Q6. X rays are coming from X ray tube, the wavelength is _______ a certain wavelength/s

(a) below
(b) above
(c) inbetween
(d) out of

Ans. (c)


Q7. In a triode valve in order to increase the saturation current what has to be done

(a) increase plate voltage
(b) reduce distance between grid and plate
(c) increase cathode potential
(d) reduce grid potential

Ans. (d )


Q8. Seven different toys are distributed among 3 children how many different ways are possible?

(a) 7C3
(b) 7P3
(c) 3 7
(d) 7 3

Ans. (c)


Q9. A, B ans C are three speakers. They have to speak randomly along with another 5 speakers in a function.
A has to speak before B and B has to speak before C. What is the probability.

Ans. 1/6


Q10. If dy = (secx + ytanx)dx, Then the curve is

(a) x = ycosx
(b) x = ysinx
(c) x = ytanx
(d) x = ysecx

Ans. (a)


Q11. Two series are 16,21,26.... and 17,21,25.....
What is the sum of first hundred common numbers

(a) 101100
(b) 110100
(c) 101110
(d) 110101

Ans. (a)


Q12. There are two sections in a question paper each contain five questions. A students has to answer 6 questions.
Maximum no. of questions that can be answered from any section is 4. How many ways he can attempt the paper?

(a) 50
(b) 100
(c) 120
(d) 200

Ans. (d)


Q13. a and b are two numbers selected randomly from 1,2,3.... 25 what is the probability of a and b are not equal.

(a) 1/25
(b) 24/25
(c) 13/25
(d) 2/25

Ans. (b)


Q14. The sum of the series 1 + 1(1+1/n) + 3(1+1/n)2 + ..... is equal to?

Ans. n2


Q15. Two circles of different radii intersects each other what is the maximum no of intersections

(a) 0
(b) 1
(c) 2
(d) 3

Ans. (c)


Q16. If x= sin-1(t), y = log(1-t2), find d2y/dx2 when t=1/2

(a) 1
(b) 0
(c) -8/3
(d) -2/3

Ans. (c)


Q17. If x approaches infinity , then (òex dx )/( òe2xdx) is ?

(a) 1
(b) 0
(c) -1
(d) 2

Ans. (a)


Q18. If f(x)=1-cos(1-cosx)/x4 is continuos at f(0) then what is x

(a) 1
(b) 0
(c) 1/4
(d) -1/4

Ans. (c)


Q19. For the word SURITI, if you arrange the letters in dictionary order then what is its rank?

(a) 234
(b) 235
(c) 236
(d) 237

Ans. (c)


Q20. Period of sin ((2t + 3) / 6 pi)

(a) 6pi
(b) 6pi2
(c) 3pi

Ans. (b)


Q21 - Q23. Four questions given on the below data


X,Yand Z are senior engineers. A,B,C,D are junior engineers. Company wants to select 4 enginers. Two will be senior and two will be juniors. The company wants these engineers to work in the most productive way so they respect each person's likes/dislikes.

Y is not friends with A

Z is not friends with C

B is not friends with A

If B is selected then who will be the remaining 4 members ?

If C is selected, Z and ___ cannot be selected?

D is always selected if ___ is selected?


Q24. A speaks truth 70% of the times, B speaks truth 80% of the times.
What is the probability that both are contradicting each other is ?


Q25. ò((2x-3)/((x2 +x+1)2 )dx is ?


Q26. Ram starts from A walking 2 km North and turns right and walks 4 km and turns right again and walks 4 km and turns right again and walks 4 km and meets Radha at Bwalking in the opposite direction to Ram .
a) Which direction does Ram walk after the first turn?
b) Distance between A and B


Q27. If the equation x2 - 3x + a = 0 has the roots (0,1) then value of a is ?


Q28. A and B's temperature are 10°c and 20°c having same surface , then their ratio of rate of emmisions is ?


Q29. An atomic particle exists and has a particlular decay rate . It is in a train . When the train moves, a person observes for whether the decay rate

(a) increases
(b) decreases
(c) depend on the directions of movement of train


Q30. Which of the following exchanges positive ions

(a).cl-
(b) nh2-
(c) ch2

Ans. (b)


Q31. After execution of CMP, a instruction in Intel 8085 microprocessor

(a) ZF is set and CY is reset.
(b) ZF is set CY is unchanged
(c) ZF is reset, CY is set
(d) ZF is reset , CY is unchanged .

Ans. ZF is set and CY is reset


Q32. The best tool for editing a graphic image is ?


Q33. Network scheme defines
a.)one to one
b.) many to many
c.) one to ,many ?


Q34. A person wants to measures the length of a rod.First he measures with standing ideally then he maeasures by
moving parrel to the rod

(a)the length will decrease in second case
(b)length will be same
(c) length will increse in the second case.


Q35. One U-230 nucleus is placed in a train moving by velocity emiting alpha rays .When the train is at rest the
distance between nucleus and alpha particle is x . One passenger is observing the particle . When the train is moving
what is the distance between particle and nucleus ?

(a) x
(b) x + vt
(c) x - vt

Q36. What is the resulting solution when benzene and toluene are mixed ?


Q37. If the word FADENCOMT equals 345687921 then

What is FEAT

Find representation of 2998


Q38. Given 10 alphabets out of which 5 are to be chosen. How many words can be made with atleast one repetition.


Q39. Arrange by acidic values : phenol, nitrotolouene and o-cresol?


Q40. Find sum of 3 + 5/(1+22) + 7/(1 + 22 + 32) + ......

Ans. 3n/(1 + n)


The following are few sample questions that maybe asked in the software paper.We haven't been able to give the values in certain problems ; only the type of questions have been mentioned.

Q What sorting algos have their best and worst case times equal ?
Ans. O(nlogn) for mergesort and heap sort

Q. What page replacement algo . has minimumn number of page faults ?
Ans. Optimality algorithm

Q. What is the use of virtual base class in c++
Ans. Multiple lines between derived classes.

Q. Find the eccentricity of a given node in a directed graph

Q. Convert the infix to postfix for A-(B+C)*(D/E)
Ans. ABC+DE/*-

Q. What is swapping

Q. Assignment operator targets to
Ans. l-value

Q. A byte addressable computer has memory capacity of 2 power m Kbytes and can perform 2 power n operations
an instruction involving three operands and one operator needs maximum of ---bits
Ans. 3m + n

Q. In round robin scheduling, if time quatum is too large then it degenerates to
Ans. FCFS

Q. What is network schema?

Q. Packet Burst is ______

Q. Picard's method uses _______?
Ans. Successive Differentiation.



The following are few sample questions that maybe asked in the hardware paper. We haven't been able to give the values in certain problems ; only the type of questions have been mentioned.

Q. Concentration and restivity is given and conductivity is asked for ?

Q. R , resistance and C, capacitance is given ,find the frequency and Q factor of the crystal ?

Q. Critical frequency and angle theta is given ;.the max useable frequency is to be calculated

Q. Questions on parabolic reflector antenna's and half wave dipole antenna's design

Q. Ramp signal is generated from integrator .Whether it is a low or high pass filter .?

Q. Calculate FM bandwidth given max modulation frequency FM , max freq deviation , df and 8 pairs allowable side band component ?

COBOL

COBOL QUESTION AND ANSWERS

1.The C language terminator is
a.semicolon
b.colon
c.period
d.exclamation mark
2.What is false about the following
A compound statement is
a.A set of simple statments
b.Demarcated on either side by curly brackets
c.Can be used in place of simple statement
d.A C function is not a compound statement.
3.What is true about the following
C Functions
a.Need not return any value
b.Should always return an integer
c.Should always return a float
d.Should always return more than one value.
4.Main must be written as
a.the first function in the program
b.Second function in the program
c.Last function in the program
d.any where in the program
5.Which of the following about automatic variables within a function
is correct ?
a.its type must be declared before using the variable
b.they are local
c.they are not initialised to zero
d.they are global.
6.Write one statement equalent to the following two statements
x=sqr(a);
return(x);
Choose from one of the alternatives
a.return(sqr(a));
b.printf("sqr(a)");
c.return(a*a*a);
d.printf("%d",sqr(a));
7.Which of the following about the C comments is incorrect ?
a.commentscan go over multiple lines
b.comments can start any where in the line
c.a line can contain comments with out any language statements
d.comments can occur within comments
8.What is the value of y in the following code?
x=7;y=0;
if(x=6)
y=7;
else
y=1;
a.7
b.0
c.1
d.6
9.Read the function conv() given below
conv(int t)
{
int u;
u=5/9 * (t-32);
return(u0;
}
What
a.15
b.0
c.16.1
d.29
10.which of the following represents true statement
either x is inthe range of 10 and 50 or y is zero
a.x>=10 && x<=50 || y==0;
b.
c.
d.
11.Which of the following is not an infinite loop ?
a.while(1){
....
}
b.for(;;){
...
}
c.x=0;
do{
/*x unaltered within theloop*/
...
}while(x==0);
d.# define TRUE 0
...
while(TRUE){
....
}
12.what does the following function print?
func(int i)
{
if(i%2)return 0;
eale return 1;
}
main()
{
int =3;
i=func(i);
i=func(i);
printf("%d",i);}
a.3
b.1
c.0
d.2
13.how does the C compiler interpret the following two statements
p=p+x;
q=q+y;
a.p=p+x;
q=q+y
b.p=p+xq=q+y
c.p=p+xq;
q=q+y
d.p=p+x/q=q+y

For questions 14,15,16,17 use the following alternatives

a.int
b.char
c.string
d.float
14.'9'
15."1 e 02"
16.10e05
17. 15

18.read the folllowing code
# define MAX 100
# define MIN 100
....
....
if(x>MAX)
x=1;
else if(x x=-1;
x=50;
if the initial value of x=200,what is the vlaue after executing this code?
a.200
b.1
c.-1
d.50
19.a memory of 20 bytes is allocated to a string declared as char *s
then the following two statements are executed:
s="Etrance"
l=strlen(s);
what is the value of l ?
a.20
b.8
c.9
d.21
20.given the piece of code
int a[50];
int *pa;
pa=a;
to access the 6th element of the array which of the following is incorrect?
a.*(a+5)
b.a[5]
c.pa[5]
d.*(*pa + 5)
21.consider the following structure:
struct num nam{
int no;
char name[25];
};
struct num nam n1[]={{12,"Fred"},{15,"Martin"},{8,"Peter"},{11,Nicholas"}};
.....
.....
printf("%d%d",n1[2],no,(*(n1 + 2),no) + 1);
What does the above statement print?
a.8,9
b.9,9
c.8,8
d.8,unpredictable value
22.identify the in correct expression
a.a=b=3=4;
b.a=b=c=d=0;
float a=int b=3.5;
d.int a;
float b;
a=b=3.5;
23.regarding the scope of the varibles;identify the incorrect statement:
a.automatic variables are automatically initialised to 0
b.static variables are are automatically initialised to 0
c.the address of a register variable is not accessiable
d.static variables cannot be initialised with any expression
24.cond 1?cond 2?cond 3?:exp 1:exp 2:exp 3:exp 4;
is equivalent to which of the following?
a.if cond 1
exp 1;
else if cond 2
exp 2;
else if cond 3
exp 3;
else
exp 4;
b.if cond 1
if cond 2
if cond 3
exp 1;
else
exp 2;
else
exp 3;
else
exp 4;
c.if cond 1 && cond 2 && cond 3
exp 1 |exp 2|exp 3|exp 4;
d.if cond 3
exp 1;
else if cond 2
exp 2;
else if cond 3
exp 3;
else
exp 4;
25.the operator for exponencation is
a.**
b.^
c.%
d.not available
26.which of the following is invalid
a.a+=b
b.a*=b
c.a>>=b
d.a**=b
27.what is y value of the code if input x=10
y=5;
if (x==10)
else if(x==9)
elae y=8;
a.9
b.8
c.6
d.7
28.what does the following code do?
fn(int n,int p,int r)
{
static int a=p;
switch(n){
case 4:a+=a*r;
case 3:a+=a*r;
case 2:a+=a*r;
case 1:a+=a*r;
}
}
a.computes simple interest for one year
b.computes amount on compound interest for 1 to 4 years
c.computes simple interest for four year
d.computes compound interst for 1 year
29.a=0;
while(a<5 br=""> printf("%d\n",a++);
how many times does the loop occurs?
a.infinite
b.5
c.4
d.6
30.how many times does the loop iterated ?
for (i=0;i=10;i+=2)
printf("Hi\n");
a.10
b.2
c.5
d.....
31.what is incorrect among teh following
A recursive functiion
a.calls itself
b.is equivalent to a loop
c.has a termination cond
d.does not have a return value at all
32.which of the following go out of the loopo if expn 2 becoming false
a.while(expn 1){...if(expn 2)continue;}
b.while(!expn 1){if(expn 2)continue;...}
c.do{..if(expn 1)continue;..}while(expn 2);
d.while(!expn 2){if(expn 1)continue;..}
33.consider the following program
B
main()
OB {unsigned int i=10;
while(i>=0){
printf("%u",i)
i--;
}
}
how many times the loop wxecuted
a.10
b.9
c.11
d.infinite
34.pick out the add one out
a.malloc()
b.calloc()
c.free()
d.realloc()
35.consider the following program
main()
{
int a[5]={1,3,6,7,0};
int *b;
b=&a[2];
}
the value of b[-1] is
a.1
b.3
c.-6
d.none
36.# define prod(a,b)=a*b
main()
{
int x=2;
int y=3;
printf("%d",prod(x+2,y-10)); }

the output of the program is
a.8
b.6
c.7
d.none
37.consider the following program sigment
int n,sum=1;
switch(n) {
case 2:sum=sum+2;
case 3:sum*=2;
break;
default:sum=0;}
if n=2, what is the value of sum
a.0
b.6
c.3
d.none
38.identify the incorrect one
1.if(c=1)
2.if(c!=3)
3.if(a 4.if(c==1)
a.1 only
b.1&3
c.3 only
d.all
39.teh format specified for hexa decimal is
a.%d
b.%o
c.%x
d.%u
40.find the output of the following program
main()
{
int x=5, *p;
p=&x;
printf("%d",++*p);
}
a.5
b.6
c.0
d.none
41.consider the following C code
main()
{
int i=3,x;
while(i>0)
{
x=func(i);
i--;
}
int func(int n)
{
static sum=0;
sum=sum+n;
return(sum);
}
the final value of x is
a.6
b.8
c.1
d.3
43.int *a[5] refers to
a.array of pointers
b.pointer to an array
c.pointerto a pointer
d......
46.which of the following statements is incorrect
a.typedef struct new{
int n1;
char n2;
} DATA;
b.typedef struct {
int n3;
char *n4;
}ICE;
c.typedef union {
int n5;
float n6;
} UDT;
d.#typedef union {
int n7;
float n8;
} TUDAT;

********************************************************************************
Only These Are The Questions Avilable For C Paper.

********************************************************************************
ANSWERS:
-----------

1-5 D,C,D,C,C

6-10 D,C,C,A,D

11-15 D,C,A,A,A

16-20 B,C,D,C,A

21-25 C,D,B,D,A

26-30 C,B,B,A,D

31-35 B,C,C,C,B

36-40 A,B,A,B,B

41-45 A,D,D,D,A

46-50 B,C,C,A,A


This the COBOL paper.

01.consider the following piece of code

01 GROSS-PAY
05 BASIC-PAY PIC 9(5)
05 ALLOWENCES PIC 9(3)
if BASIC-PAY has a value 1000 and ALLOWENCES has a value of 250,what will be
displayed by the statement
DISPLAY GROSS-PAY
a.1250
b.01000250
c.01250
d.1.250
02.consider two data items

77 W-A PIC 9(3)V99 VALUE 23.75
77 W-B PIC ZZ9V99 VLAUE 123.45
after the statement
MOVE W-A TO W-B
what will be W-B's value?
a.123.75
b.b23.75 (where b indicates space)
c.023.75
d.invalid move
03.what is the result of the following?

DIVIDE A INTO B GIVING C.

a.C=A/B
b.the reminder of B/A is stored in C
c.C=B/A
d.the reminder of A/B is stored in C
04.consider the statement (incomplete)
IF(A NUMERIC)
DISPLAY A
the variable A can be
a.NUMERIC
b.ALPHABETIC
c.ALPHANUMERIC
d.NUMERIC OR ALPHANUMERIC
05.which of the following can be used as a check protection symbol
a.Z
b.S
c.*
d.+
06.what if any ,is the syntex error in the following piece of code
01 B PIC A(7)
02 C PIC 9(4)
........
IF(B NUMERIC)
ADD 10 TO C
a.the condition in the if statement is wrong
b.noting is wrong
c.because C is initialised.ADD 10 TO C is wrong
d.both B and C shoud have same size.
07.study the following code
01 A1
05 B PIC 99
05 C PIC X(4)
01 A2
05 B PIC 99V99
05 C PIC A(4)
pick out the valid statement from the following
a.A1 and A2 can not have sub-ordinates
b.A1 and A2 can have the same sub-ordinates but must have same PIC clause
c.there is nothing wrong
d.A1 and A2 can have same sub-ordinates provided they are not at 01 level
08.study the following
01 A PIC 99V0 VALUE 5
01 B PIC 9V9 VALUE 6
01 C PIC 99V9 VALUE 2.5
01 D PIC 99 VALUE 3
COMPUTE A ROUNDED B C = A+B*C/D
ON SIZE ERROR PERFORM PRINT-ERROR
the comments of A.B.C after execution of the above statement are
a.A=10 B=0 C=10
b.A=10 B=9.9 C=9.9
c.A=10 B=0 C=9.9
d.A=10 B=6 C=10
09.how many times PARA-A is performed :
PERFORM PARA-A VARYING TIMES-COUNTER FROM 1 BY 1
UNTIL TIMES-COUNTER >0
PARA-A
MOVE P TO Q
MOVE H TO TIMES COUNTER
a.10
b.1
c.11
d.0
10.consider the following piece of code
01 GROUP-ITEM
05 AMOUNT-1 PIC 99V9 USAGE COMP VALUE 50
05 AMOUNT-2 PIC 9(4)V99 USAGE COMP
MOVE ZERO TO GROUP-ITEM
ADD 50 TO AMOUNT-1
what will be the content of AMOUNT-1?
a.50
b.100
c.0
d.unpredictable
11.consider the following progrm statements
MOVE 0 TO SW.NO.OF.REC
PERFORM PRI-OUT UNTIL SW=1
DISPALY NO.OF.REC
STOP RUN
PRE-OUT
READ IN-FILE AT END
MOVE 1 TO SW
WRITE OUO-REC FROM IN-REC
ADD 1 TO NO.OF REC
if the IN-FILE contains 1000 records what value will be displayedafter the
PERFORM is over?assume that N0.OF.REC has PIC 9(4)
a.1000
b.1001
c.1
d.none of the above since there is a syntex error
12.study the data discriptions and answer the questions given below
i)01 ORDER RECORD
05 OUT-HEADER PIC X(50)
05 ITEM-COUNT PIC 99
05 OUT-ITEM PIC X(20) OCCURS 1 TO 20 DEPENDING ON ITEM-COUNT
ii)01 NAME-AND-ADDRESS
05 N-AND-A-LINE OCCURES 5
05 LINE-LENGTH PIC P9
05 N-AND-A-CHAR PIC X OCCURS 1 TO 20 DEPENDING ON LINE-LENGTH
iii)01 SALES-LIST
05 SALESMAN-COUNT PIC 99
05 SALES PIC 9(6) OCCURS 1 TO 100 DEPENDING ON
SALESMAN-COUNT
iv)01 ORDER-RECORD
05 NO-OF-BRANDS PIC 99
05 BRAND-PURCHASED OCCURS 1 TO 15 DEPENDING ON NO-OF-BRANDS
which of the following is true?
a.i) and iii) are valid
b.i) and iv) are valid
c.i) and iii) are not valid
d.all are valid
13.C1 C2 C3 are three conditions whose TRUTH values are as folloes.
C1-TRUE C2-FALSE C3-TRUE
A,B,C are defined as given below
A:C1 AND(NOT C2) OR C3
B.(NOT C1) OR (NOT C2 AND NOT C3)
C.(C1 OR C2)AND C3
D.C1 AND C2 OR C3
given the above information which of the following statements are valid?
a.only A,B and C are TRUE
b.only A,C and D are TRUE
c.A,B,C and D are TRUE
d.only C and D are TRUE
14.consider the following
FD FILE-1
01 REC-1 PIC X(80)
......
WORKING-STORAGE SECTION
01 W-REC PIC X(90)
........
PROCEDURE DIVISION
FIRST-PARA
.......
READ FILE-1 INTO W-REC AT END MOVE 1 TO EOF-FLAG
which of the following is true with respect to the above?
a.REC-1 will contain nothing and W-REC will contain the contains of the
record read
b.REC-1 and W-REC contain the same data
c.syntex is invalid and error will occur
d.REC-1 and W-REC must be of same size
15.PERFORM ACCUMULATE-TOTALS
VARYING A FROM 1 BY 2 UNTIL A >2
AFTER B FROM1 BY 1 UNTIL B>2
AFTER C FROM 2 BY -1 UNTIL C<2 br=""> the paragraph ACCUMULATE-TOTALS would be exicuted
a.18 times
b.4 times
c.8 times
d.24 times
16.there is a file whose ORGANISATION is INDEXED.you want to read the records
from the file in RANDOM fashion as well as sequentially.then which of the
access mode would you specify?
a.SEQUENTIAL
b.RANDOM
c.DYNAMIC
D.ACCESS MODE has nothing to do with it
17.consider the following PROCEDURE DIVISION entry
OPEN EXTEND IN-FILE
identify the correct statement
a.organization of IN-FILE is sequential and records can be added in the
beginning
b.organization of IN-FILE is sequential and records can be added in the
end
c.organization of IN-FILE is indexed and records can be added in the
beginning
d.organization of IN-FILE is indexed and records can be added in the end
18.what is the size of W-REC in the following
01 W-REC
05 A PIC 9(4)V99
05 B READLINES A
10 C PIC XX
10 D PIC S9(4)
05 E OCCURS 7 PIC ZZ.ZZ
05 F OCCURS 5
10 G PIC ZZ.ZZZ99
10 H OCCURS 3
15 J PIC 9(3)
15 K PIC V99
a.177
b.161
c.180
d.none of yhe above
19.consider the following two IF statements:
IF X AND NOT Y MOVE A TO B
IF Z=1 OR 9 MOVE A TO B
select one of the following data divusion entries which gives identical
results for both the above IF statements
a.01 Z PIC 9
88 X VALUE 1.9
88 Y VALUE 0.2 THRU 8
b.01 Z PIC 9
88 X VALUE 0.2 THRU 8
Y VALUE 1.9
c.01 Z PIC 9
88 X VALUE 1.9
88 NOT-Y VALUE 0.2 THRU 1.9
d.none of yhe above
20.consider the following two statements
MOVE 10 TO N
PERFORM PARA-X N TIMES
STOP RUN
PARA-X
MOVE 5 TO N
how many times PARA-X willbe exicuted?
a.10
b.5
c.infinate
d.execution error
21.given the following:
77 A PIC 9V9 VALUE 9.5
77 B PIC 9 VALUE 9.
77 C PIC V9 VALUE 0.8
77 D PIC 9
77 E PIC 9
77 F PIC 9V999
what are the contenta of D E nad F after teh following statements are
executed:
COMPUTE F ROUNDED=A+C/B
MULTIPLY A BY C GIVING E
ADD B C A GIVING D ROUNDED
a.F=9.589 E=8 D=1
b.F=9.589 E=8 D=9
c.F=9.589 E=7 D=9
d.F=9.589 E=7 D=1

22. Consider the follwoing IF condition:

IF A LESS 1200 IF B GREATER 25 MOVE 47 TOC
ELSE MOVE 57 TO C
IF A GREATER 249 MOVE 67 TO C
ELSE NEXT SENTENCE ELSE IF B LESS 67
MOVE 27 TO C

What will be the value of C, when A is 137 and b is 25
(a) 27
(b) 57
(c) 67
(d) none

23. Consider the following:

77 W-NUM PIC 9 VALUE 0
------
MOVE 1 TO W-NUM
PERFORM PARA-X UNTIL W-NUM > 9.
------
PARA-X
ADD 1 TO W-NUM

How many times PARA-X is executed ?
(a) 10
(b) 9
(c) 11
(d) Infinite loop

24. Consider the following code:

77 A PIC 99V99 VALUE 55.35
77 B PIC 99V999 VALUE 32.754

ADD B TO A ON SIZE ERROR DISPLAY "ERROR!!!"

What will be the result ?
(a) A=88.10, B=32.754
(b) A=87.00 B=32.754
(c) A=87.10 B=32.754
(d) ERROR!!! will be DISPLAYed on the screen.

25. Consider the following:

77 A PIC 9(10)
77 B PIC 9(10)
77 C PIC 9(19)

MULTIPLY AB BY B GIVING C

Which of the following is true ?

(a) The execution of the above may result in size error.
(b) The execution of the above will result in size error.
(c) The definition of C is invalid resulting in compilation error.
(d) No error will be thee and the program would proceed correctly.

26. A paragraph PARA-X is to be executed when none oof the data names
A, B and C have value of 1. Which of the following will achieve this ?

(a) IF A NOT = 1 OR B NOT = 1 OR C NOT = 1 PERFORM PARA-X
(B) IF NOT A= 1 AND B= 1 AND C = 1 PERFORM PARA-X
(C) IF A NOT =1 IF NOT B = 1 OR C= 1 PERFORM PARA-X
(C) IF A NOT = 1 AND B NOT = 1 AND C NOT = 1 PERFORM PARA-X



27. Study the five expressions and the class to which they belong:
S.N. Expression Class
1 "SPACES" Figurative constant
2. "Depreciation Schedule Non-numeric literal
3. "12%" Non-numeric literal
4. INTEREST-DUE Non-numeric literal
5. ZEROES Figurative constant
Which of the following statement is true?
(a) 1 and 3 are incorrect
(b) 1 and 4 are incorrect
(c) 3 and 4 are incorrect
(d) All are correct

28. Identify the invalid dataname from the following:
(a) SAVINGS-ACCOUNT
(b) ANNUAL-ALLOCATION-FOR-OVERHEAD
(c) SAMOUNT250
(d) 12DEMAND

29. Study the DATA DIVISION entries and the three PROCEDURE DIVISION entries
given below:
01 END-OF-FILE-SWITCH PIC XXX.
88 NO-MORE-RECS VALUE "YES".
88 MORE-RECS VALUE "NO".
(i) READ SAMPLE-FILE AT END MOVE "YES" TO NO-MORE-RECS.
(ii) IF NO-MORE-RECS = "YES" GO TO LAST-PARA.
(iii) IF NO-MORE-RECS GO TO LAST-PARA.
Which are wrong?
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) all

30. The following entries appear in the WORKING-STORAGE SECTION:
01 DATE-TODAY.
05 YY PIC XX VALUE "90".
05 MM PIC XX VALUE "12".
05 DD PIC XX VALUE :31".
01 DATE-EDIT PIC XX/XX/XX.
MOVE DATE-TODAY TO DATE-EDIT.
(a) 901231
(b) 90/12/31
(c) 31/12/90
(d) 311290

31. How many bytes will be allocated for the following record description
entries?
01 REC-A.
05 A PIC S9(4).
05 B PIC XXXBXXX.
05 C PIC ____9.99.
05 D PIC S9(5) COMP-3.
05 E PIC 9(3) COMP.
(a) 29
(b) 26
(c) 25
(d) 28

32. What is wrong with the following data declaration?
01 W-DATE PIC X(6).
05 DD PIC 99.
05 MM PIC 99.
05 YY PIC 99.
(a) Nothing is wrong.
(b) Under W-DATE all level 05 items are having a PIC 99 but level
01 has PIC X(6).
(c) PIC can't be specified for a group item.
(d) DD, MM, and YY are invalid datanames.

33. What is the output generated by the following code?
01 GRP-I.
05 SUBFLD1 PIC XX VALUE "AB".
05 FILTER PIC X(6) VALUE SPACES.
01 GRP-2 REDEFINED GRP-1.
05 SUB-FLD2 PIC XX.
05 SUB-FLD3 PIC XX.
05 FILTER PIC X(4).
IF SUB-FLD1 NOT = SPACES
DISPLAY "SUBFLD1"
MOVE "ABBCCD" TO GRP-1
IF SUB-FLD3 = SPACES
DISPLAY "SPACES"
ELSE
DISPLAY "SUBFLD3"
DISPLAY "END"
ELSE
DISPLAY "SPACES"
DISPLAY "END".
(a) SUBFLD1
SUBFLD3
END
(b) SPACES
END
(c) SUBFLD1
END
(d) SUBFLD1
SPACES

34. 88 level entry is used for
(a) data items in WORKING-STORAGE SECTION
(b) items with RENAMES clause
(c) condition-names
(d) None of the above

35. ZEROES and SPACES are _______ constants
(a) Figurative
(b) Numeric
(c) Non-numeric
(d) Alphabete

36. COMPUTE X = A * B - C * D and
COMPUTE X = (A * B) - (C * D)
(a) Are not the same
(b) Are same
(c) Syntactically wrong
(d) Will yield a run time error

37. OCCURS clause is used in the DATA DIVISION on data names at
(a) 01 level
(b) 77 level
(c) 88 level
(d) any level from 02 to 49

38. Consider the following COBOL entries:
05 X PIC 99 VALUE 10.
SUBTRACT 20 FROM X.
The resultant value of X wil be
(a) 10
(b) 00
(c) compile-time error
(d) none of these

39. Consider the following COBOL entries
05 X PIC 99 VALUE 10.
ADD 40 X TO X.
COMPUTE X = 3 * X - 40.
The result in X is
(a) 10
(b) 40
(c) Compile or Run time error
(d) none of these

40. given the following piece of code:
CALL SUB-PGM USING A, B, C.
CALL SUB-PGM USING A, C, C.
(a) Both CALL statements will always produce same result.
(d) Both CALL statements may produce different result.
(c) Compile-time error because SUB-PGM is a dataname.
(d) Compile-time error because A, B, C are used twice.

41. The hierarchy of the execution of logical operators is
(a) NOT AND OR
(b) AND OR NOT
(c) OR AND NOT
(d) OR NOT AND

42. The order of precedence of arithmetic operators in an expression can be
overridden with the use of
(a) []
(b) ()
(c) {}
(d) Any of the above

Consider the following passage for answering questions 43 to 47.

A program is written to accept an answer to the query "enough fo the Day?"
If the respons is "N" then the program accepts quantity purchased and rate
of the item and displays the amount to be collected. Then the above query
is again displayed and the loop continues. At the end of the day, when
the response to the above query is "Y", the day collections are displayed.

The program checks that the quantity purchased is between 25 and 125 and the
rate of the item is between 10.00 and 75.00. If any of these two conditions
are violated, the program displays an appropriate message and asks for next
input. The amounts are displayed with proper editing. The program is written
assuming that there can be a maximum of 1000 transactions a day.

43. How many variables would you declare for the above problem?
(a) 3
(b) 4
(c) 5
(d) 7

44. What should be the PICTURE clause of the variable used to calculate
end of the day collections?
(a) 9(9)v99
(b) 9(8)v99
(c) 995)v99
(d) Information given is insufficient to arrive at the answer

45. What should be the PICTURE clause of the variable used to calculate
to be collected.
(a) 9(9)v99
(b) 9(8)v99
(c) 9(5)v99
(d) Information given is insufficient to arrive at the answer

46. Assuming that the above program is being executed in a Department
Stores in MADRAS which of the following PICTURE clause will be
suitable for DISPLAYing the end of the day collections?
(a) Z(5)V99
(b) Z(5).99
(c) ZZ,ZZ,ZZ,ZZ9.99
(d) Information given is insufficient to arrive at the answer

47. How many _____ statements do you think will be there in the program?
(a) 3
(b) 4
(c) 5
(d) Information given is insufficient to arrive at the answer

48. Which of the following paragraphs is compulsory in every COBOL program?
(a) SPECIAL-NAMES
(b) PROGRAM-ID
(c) FILE-CONTROL
(d) OBJECT-COMPUTER

49. Which of the following files can be OPENed in all the 4 modes? The four
modes are INPUT, I-O, OUTPUT and EXTEND.
(a) INDEXED
(b) RELATIVE
(c) SEQUENTIAL
(d) All of the above

50. Which of the following EDITind and PICTURE symbols is to be used if a
minus(-) is to appear before the value if the value is -ve and a plus(+)
is to appear before the value if the value is +ve?
(a) +
(b) -
(c) + OR
(d) It is not possible

solutions

b,b,c,c,c,a,d,a,b,a,c,c,b,b,b,c,b,d,a,a,c,b,d,a,d,d,b,c,d,b,a,c,a,c,a,b,d,
a,c,b,a,b,b,b,c,c,a,b,c,a

C LANGUAGE INTERVIEW QUESTIONS

C LANGUAGE INTERVIEW QUESTIONS
1.What does static variable means?

2.What is a Pointer?
3.What is a Structure?
4.What are the differences between Structures and Arrays?
5.In header files whether functions are declared or defined?
6.What are the differences between malloc() and calloc()?
7.What are Macros? What are its advantages and disadvantages?
8.Difference between Pass by Value and Pass by reference?
9.What is static identifier?
10.Where is the auto variables stored?
11.Where does global, static, local, register variables, free memory and C program instructions get stored?
12.Difference between arrays and linked list?
13.What are enumerations?
14.Describe about storage allocation and scope of global, extern, static, local and register variables?
15.What are register variables? What are the advantages of using it?
16.What is the use of typedef?
17.Can we specify variable field width in a scanf()format string? If possible, how?
18.Out of fgets() and gets(), which function is safe to use and Why?
19.Difference between strdup and strcpy?
20.What is recursion?
21.Differentiate between a FOR loop and a WHILE loop? What are its uses?
22.What are the different storage classes in C?
23.Write down the equivalent pointer expression for referring the same element a[i][j][k][l]?
24.What is the difference between Structure and Unions?
25.What are the advantages of using Unions?
26.What are the advantages of using pointers in a program?
27.What is the difference between Strings and Arrays?
28.What is a far pointer? Where we use it?
29.How will you declare an array of three function pointers where each function receives two int and returns a float?
30.What is NULL pointer? Whether it is same as an un-initialized pointer?
31.What is a NULL macro? What is the difference between a NULL pointer and a NULL macro?
32.What does the error ‘Null Pointer Assignment’ means and what causes this error?
33.What is near, far and huge pointers? How many bytes are occupied by them?
34.How would you obtain segment and offset addresses from a far address of a memory location?
35.Are the expressions arr and &arr same for an array of integers?
36.Does mentioning the array name gives the base address in all the contexts?
37.Explain one method to process an entire string as one unit?
38.What is the similarity between a Structure, Union and Enumeration?
39.Can a Structure contain a Pointer to itself?
40.How can we check whether the contents of two structure variables are same or not?
41.How are Structure passing and returning implemented by the compiler?
42.How can we read/write Structures from/to data files?
43.What is the difference between an enumeration and a set of pre-processor # defines?
44.What do the ‘c’ and ‘v’ in argc and argv stand for?
45.What is the maximum combined length of command line arguments including the space between adjacent arguments?
46.If we want that any wildcard characters in the command line arguments should be appropriately expanded, are we required to make any special provision? If yes, which?
47.Does there exist any way to make the command line arguments available to other functions without passing them as arguments to the function?
48.What are bit fields?
49.What is the use of bit fields in a Structure declaration?
50.To which numbering system can the binary number 1101100100111100 be easily converted to?
51.Which bit wise operator is suitable for checking whether a particular bit is on or off?
52.Which bit wise operator is suitable for turning off a particular bit in a number?
53.Which bit wise operator is suitable for putting on a particular bit in a number?
54.Which one is equivalent to multiplying by 2: Left shifting a number by 1 or Left shifting an unsigned int or char by 1?
55.Write a program to compare two strings without using the strcmp() function?
56.Write a program to concatenate two strings?
57.Write a program to interchange 2 variables without using the third one?
58.Write a program for String Reversal?
59.Write a program for Palindrome check?
60.Write a program to find the Factorial of a number?
61.Write a program to generate Fibonacci series?
62.Write a program which employs Recursion?
63.Write a program which uses Command Line Arguments?
64.Write a program which uses functions like strcmp(), strcpy(), etc.?
65.What are the advantages of using typedef in a program?
66.How would you dynamically allocate a one-dimensional and two-dimensional array of integers?
67.When reallocating memory if nay other pointers point the same piece of memory, do you have to readjust these other pointers or do they get readjusted automatically?
68.Which function should be used to free the memory allocated by calloc()?
69.How much maximum can you allocate in a single call to malloc()?
70.Can you dynamically allocate arrays in expanded memory?
71.What is object file? How can you access object file?
72.Which header file should include if you are to develop a function which can accept variable number of arguments?
73.Can you write a function similar to printf()?
74.How can a called function determine the number of arguments that have been passed to it?
75.Can there be at least some solution to determine the number of arguments passed to a variable argument list function?
76.How do you declare, An array of three pointers to chars?
77.How do you declare, An array of three char pointers?
78.How do you declare, A pointer to array of three chars?
79.How do you declare, A pointer to function which receives an int pointer and returns a float pointer?
80.How do you declare, A pointer to a function which receives nothing and returns nothing?
81.What do the functions atoi(), itoa() and gcvt() do?
82.Does there exist any other function which can be used to convert an integer or a float to a string?
83.How would you use qsort() function to sort an array of structures?
84.How would you use qsort() function to sort the name stored in an array of pointers to string?
85.How would you use bsearch() function to search a name stored in array of pointers to string?
86.How would you use the functions sin(), pow(), sqrt()?
87.How would you use the functions memcpy(), memset(), memmove()?
88.How would you use the functions fseek(), fread(),fwrite() and ftell()?
89.How would you use the functions randomize() and random()?
90.How would you obtain current time and difference between two times?
91.How would you implement a substr() function that extracts a sub string from a given string?
92.What is the difference between the functions rand(), random(), srand() and randomize()?
93.What is the difference between the functions memmove() and memcpy()?
94.How do you print a string on the printer?
95.Can you use the function fprintf() to display the output on the screen?