GURU NANAK INSTITUTIONS TECHNICAL CAMPUS
ENGINEERING CHEMISTRY
ASSIGNMENT AND IMPORTANT QUESTIONS
UNIT I
2M
:
Assignment
questions:
1.
Define the equivalent conductance? Give its units
2.
Define EMF
3.
What is cementation?
4. What is pitting corrosion?
Important questions:
5.
What is meant by standard electrode potential?
6.
What is paint? What are its constituents ?
7.
What is meant by reference electrode?
8.
What is metal cladding?
9. What is electro chemical series?
10.
What is inter-grannular corrosion?
11.
Calculate the EMF of given cell reaction.
Zn+Cu+2 à
Zn+2 + Cu
Zn= -0.76v and Cu= +0.34v
3M
:
Assignment
questions:
1.
Define the specific conductance? How it vary with dilution?
2.
Define the molar conductance? Give its units
3.
What are concentration cells? write the types of concentration cells
4.
What is cathodic protection.
Important questions:
5
.Write about calomel electrode.
6.
Write the applications of fuel cells
7.
Differentiate primary and secondary batteries
8.
Calculate the specific conductance of an electrolytic solution having cell
constant is 0.3cm-1 and observed conductance is 1995 ohm-1
9.
Calculate the electrode potential of 0.1M Cu+2 ion. Standard
electrode potential is 0.34v at250c
UNIT- II
2
M:
Assignment
questions:
1. Define the
terms monomer, polymer
2. What is functionality?
3. What is
addition polymerization?Give example?
4. What is a
condensation polymerization give example?
Important questions:
5. Define
plastics
6. What is vulcanization?
7. Define fiber?
8. What is
Biodegradable polymer give example?
3M :
Assignment
questions:
1. Write the differences between
addition & condensation polymerization
2. Explain the
differences between thermo-plastic and thermo set plastics
3. What is paint
and write the constituents of paint.
4. Explain the
preparation of PVC
Important
questions:
5. What is
vulcanization? why is this carried out?
6. Explain about
fiber reinforced plastics & its applications.
7. Explain about
Fullarence
UNIT III
2M
:
Assignment
questions:
1. What is hardness of water?
2. What is Temporary and permanent
hardness of hardness of water?
3. Write the different units of hardness
of water.
4. Define scale and sludge
Important
questions:
5. Write the structure of EDTA
6. Define priming.
7. What is calgon conditioning?
8. What is chlorination?
3M:
Assignment
questions:
1. Write about conditioning methods.
2. Why hot lime-soda process is
advantageous over cold lime-soda process
3. What is Reverse Osmosis?
4. What is boiler corrosion?
Important
questions:
5. What is caustic embrittlement?
6. What is potable water.
UNIT IV
2M:
Assignment
questions:
1. Define a fuel?
2. What is meant by calorific value of a
fuel?
3. Distinguish between gross and net
calorific value of a fuel?
4. What is meant by ignition
temperature?
Important
questions:
5. What is knocking?
6. What is octane number and cetane number?
7. Name the highest ranking coal.
3M:
Assignment
questions:
1. Why tetra ethyl lead is mixed with
gasoline?
2 .Why is octane number for 2,3-dimethyl
pentane higher than n-heptane?
3. Why are gaseous fuels more
advantageous than solid fuels?
4. Define cracking
Important
questions:
5 .How do you analyze CO2
and H2O
produced during combustion of a fuel sample?
6. Why is it necessary to remove sulphur
from oil and natural gas?
UNIT V
2M:
Assignment
questions:
1.
What are colloids?
2.
Define adsorption and absorption
3. What is Triple point and Eutectic point
4.
Define Gold Number?
Important
questions:
5.
Define the terms a)phase b)Component c)Degree of freedom?
6.
what is Tindal effect.
7. Write the limitations of the Freundlich
adsorption isotherm?
8.
Write the limitations of the Langmuir adsorption isotherm?
9.
What is adsorption? What are their types?
10.
Write an account of the dialysis?
11.
Write the Cleaning action of Soap
12.
Why sky is Blue in color?
3M
Assignment
questions:
1.
What are colloids? How are they classified?
2.What
is Hardening and Annealing.
3.
Write an account an electro - osmosis?
4.
What is meant by coagulation of colloids?
Important
questions:
5.
Explain about the Kinetic property or Brownian movement?
6.
Explain about the Hardy Schultz rules?
7.
Write a detailed account on origin of charge on colloids?
8. Write the difference between
lyophilic and lyophobic colloid .
UNIT-1 Short Questions
2
Marks
1.
What are the basic operations of Computer?
2.
Define operating system.
3. What is pseudo code?
4.
Define Compilation process?
5.
What is Flowchart? What is the need of Flowchart symbols?
6.
What are the two
commands to control the loops? Give example.
7.
Distinguish between
compiler and interpreter.
8. What
is void in C? Give example.
9.
What is the purpose of
type declaration?
10. Give
syntax and example for goto.
3
marks
1.
What is an algorithm
and what are the characteristics of an
algorithm?
2. Define
a) Preprocessor b) Compiler c) Translator d) Interpreter?
3.
What is the Structure of a C Program?
4.
Define Constants in C. Mention the types.
5.
What is a Data Type and List the different
Data types
6. Differentiate
between Application software and System software.
7. What
is structure chart? Give example.
8.
How algorithm is
different from flowchart? Give example.
9. What
is meant by operator precedence? Give example.
10.
Write about types of
constant representations.
UNIT-1
2 Marks
Questions
1.
Write difference between algorithm and
flowchart?
2.
What is the syntax of switch statement?
3.
Define Hardware?
4.
Write about arithmetic operators in C?
5.
What is
a Type Casting?
6.
What is
a Preprocessor Directive?
7.
Differentiate between Application
software and System software.
8.
What are the two commands to control the
loops? Give example.
9.
Define constant and variable.
10. Distinguish
between compiler and interpreter.
11. What
is the purpose of type declaration?
12. Define Type Specifiers and list them.
13. What
is void? Give example.
14. Define
keyword. How many keywords are there in ‘C’ language.
15. What
is operating system? Give examples.
3
Marks Questions
1.
What is format specifier, give examples?
2.
What is the importance of main() in C?
3.
Define
FOR statement, explain with syntax and example.
4.
What is structure chart? Give example.
5.
Write about types of constant
representations.
6.
What is meant by operator precedence?
Give example.
7.
What is the purpose of break and
continue?
8.
Define variable ? give the rules of a
variable ?
9.
Differentiate between while and
do-while.
10. Give
any two restrictions for a Conditional Operator?
11. What
are Selection statements? State any two
statements with example
12. What
is Increment and Decrement Operator? Give example.
13. What
is the purpose of adding comment lines in a program? What are the types of
comment lines?
14. Differentiate
between Time-sharing and Client/Server environment?
15. difference
between ‘=’ and ‘==’ operator.
ENGINEERING CHEMISTRY
OBJECTIVE QUESTIONS
UNIT 1
1.
Example for fuel cell
is [d]
a)
H2/O2 b)
Solid oxide
b) posphoric
acid d) all
2.
The specific conductance of a solution increases with ____ [a]
a)
increase in concentration b) decrease in concentration
c) increase in temperature d) none of the above
3. Electrolytic conduction Involves
[a]
a) Migration of ions b) Chemical Change
c) Mobility of Electrons d) All The Above
4. A good electrolyte
[d]
a) Urea solution b) Acetic acid
solution
c) Sugar solution d) Dilute HCL
solution
5. In
electro chemical series, the metals above H2 are [a]
a)
Active
b) in active
c) Both d)
none.
6. Secondary reference electrode is
[c]
a) Pt electrode b) Ag
c) Quinehydrone d) cu.
7.
Ionic mobility is related with [b]
a)
Eq’conductance b) ionic conductance
c) SP. Conductance d) none.
8. Secondary reference electrode [c]
a) Pt electrode b) Ag
c) Quinehydrone d) cu.
9.
Which of the following constitutes Daniel cell [c]
a) Zn - Ag cell b) cu- Ag cell
c) Zn – cu cell d) none.
10. The electrode potential of SHE is
[d]
a) 1
b) 2
c)
1.018 d)
0.
11. If a salt bridge is
removed between the half cells, the voltage, [a]
a) Decreases to zero b) increases rapidly
c) Increases d) do not
change.
12.
In the cell zn / Zn+2 // cu+2 / cu
[c]
a) Cu gets reduced b) Zn gets oxidized
c) Zn gets oxidized and cu gets
reduced (d) cu gets oxidized
13. Corrosion is a process of
[b]
a) Reduction b) oxidation
c) ozonolysis d) electrolysis
14. In the wet theory of
corrosion
[b]
a) Dry cell is
formed b)
galvanic cell is formed
c) Concentration
cell is formed d) none
15. Which one of the
following causes corrosion of iron [d]
a) oxygen b)
hydrogen
c) strong base d)
moisture and oxygen
16. The method in which the base metal is heated with another
powdered metal to prevent
corrosion is known
as
[c]
a)
electroplating b) metal spraying
c) pack
cementation d)
metal cladding
17. The method to prevent
corrosion of iron by zinc coating is called [a]
a)
galvanization b) electrolysis
c) cathode
protection d) anode protection
18. The rusting of iron
is catalyzed by
[d]
a) Zn b) Fe
c) Al d) H2O
19. A process is which metal is protected from corrosion by
dipping it in molten
zinc
is known as
[b]
a) tinning b) galvanisation
c) cladding d)
electroplating
20. The process of
cementation with zinc powder is known as [c]
a) galvanizing b) zinsing c) sherardizing d) tinning
21.
Anodic coating protects the underlined metal [a]
a) due to its noble character b)sacrificially
c)due to its higher electrode potential d) none of the above
22. Drying oils supply to paint film [ b ]
a) main film forming constituent b) medium or vehicle
c) water proofness d) all of these
23. The buried pipe line is protected
from corrosion by connecting to Mg block it is called as[c]
a ) impressed voltage
protection b) sacrificial
cathodic protection
c) sacrificial anodic protection d) any of the above
24. The rusting of iron is catalyzed by
[d]
(a) Zn (b) Fe
(c) Al (d) H2O
25. The overall cell reaction in the
Galvanic cell is
[a]
a) Zn + Cu+2 -à Zn+2+Cu b) Zn+2+ Cu -à Cu++Zn
a) Zn + Cu+2 -à Zn+2+Cu b) Zn+2+ Cu -à Cu++Zn
C) 2 Ag + Cu+2 -à2Ag++Cu d) 2 Ag + Cu+2 -à2Ag+Cu+2
Fill in
the blanks
1) Calomel
electrode is Hg / Hg2 cl2
paste
2) Nernst
eg’ is E = E0-
log 
log
3) Galvanic
cell converts chemical energy into
electrical energy
4) PEMFC
means proton exchange membrane fuel cell
5) Rechargeable
batteries are secondary batteries
6) Units
for equivalent conductance ohm-1 cm2
eq-1
7) Glass
electrode is a type of ion selective
electrode
8) Cell
const = distance between the electrodes
Area of
cross – section of electrodes
9) Cell
const = Specific conductance X resistance
10) As
the dilution increases Molar and equivalent conductance of an electrolyte
increases
11) Determination
of eq’ conductance for weak electrolytes at infinite dilution is determined
using kohlraulsch’s law.
12) Corrosion
is the destruction of a metal by chemical or electrochemical reaction with its
environment.
13) Physical
or mechanical wearing of a metal is called erosion.
14) Corrosion is
the deterioration of solids by liquid electrolyte.
15) Chemical
corrosion is also called as dry
corrosion.
16) Direct
attack of dry gases on metals forms thick
film.
17) Solid corrosion
product formed on the surface of the metal protects the remaining metal from
further corrosion.
18) Volatile
product formed on the surface of the metal proceeds the attack.
19) Ferric chloride
is an example of solid corrosion product.
20) Pilling Bedworth
rule is, the metal oxide formed is protective if the volume of the oxide is as
great as the volume of the metal from which it is formed.
21) The
industrial example of chemical corrosion is the formation of scales during hot working of steel.
22) The
electrochemical corrosion is also
called as wet corrosion.
23) The
common cases of corrosion are explained on the basis of the electrochemical theory.
24) At
ordinary temperatures the corrosion process involves oxidation.
25) A
Galvanic cell is formed when two
dissimilar metals, electrically connected, dip in an electrolyte.
DEPARTMENT OF COMPUTER
SCIENCE & ENGINEERING
ACADEMIC YEAR: 2015-2016
UNIT-I
INTRODUCTION TO COMPUTERS
& INTRODUCTION TO C
Objective Type Questions
1. ALU stands for ________
2. The process of repeating statements in an algorithm is known as
________
3. _______ translates high level language source code into low-level
language
4. Output of the assembler in the form of 0’s and 1’s is called
_________
5. Which of the following is a component of a computer system
a) Hardware b) Software c) both hardware & software d) pseudocode
6. Which of the following is an example of application software
a) Database Management Systems b)
Language translator
c)
Operating System d)
Security monitor
7. Tool used for translating assembly language program into machine
language is ________
8. Pictorial representation of algorithm is _____________
9. _________ computing environment splits the computing function
between a central computer and user’s computers.
10. Computing environments are divided into ____ types
a) 2 b) 4 c) 5 d)
3
11. The software used to write programs is known as a _________
12. Popular development life cycle model is _
a) Waterfall b) prototype c) object-oriented d) spiral
13. Structure chart is also known as
a) Hierarchy chart b)
flowchart c) Multichart d) none
14. Black-box testing is developed by looking only at the _______
statement
a) Functioning b)
requirement c) both d) none
15. ___ connector is used to connect flowchart from one page to another
a) circle b) Pentagon c) square d)
rectangle
16. a<<1 is equivalent to
a)
multiplying by 2 b) dividing by 2 c) adding 2 d)none of the above
17. The operation of a stair case
switch best explains the
a)
or operation b) and operation c)exclusive nor operation
d)exclusive or operation
18. Which of the following is/are
syntactically correct?
a)
for(); b) for(;); c) for(,); d) for(;;);
19. The expression 4+6/3*2-2+7%3
evaluates to
a) 3 b) 4 c) 6 d) 7
20. Any C program
a) must contain at least one
function b) need not contain ant
function
c) needs input data d) none of the
above
21. Using goto inside for loop is
equivalent to using
a)continue b) break c)
return d)none of the above
22. The program fragment int a=5,
b=2; printf(“%d”,a+++++b);
a)prints 7 b)prints 8 c) prints 9
d)none of the above
23. printf(“ab” , “cd”,”ef”);
prints
a)ab b) bcdef c)
abcdef, followed by garbage value d) none of the above
24. Consider the following program
segment. i=6720; j=4; while((i%j)==0)
{
i=i/j;
j=j+1;
}
On termination j will have the
value
a)4 b) 8 c) 9 d) 6720
25. What types of errors checked
during compilation
a)Logical errors b) divide-by-zero error c) run-time error d) syntax error
26. Size of long double variable is
________
27. ____________ are identifiers
reserved by the C language for special use
28. The ___________ of operator
gives the order in which operators are applied in expressions.
29. _________ is very similar to
the while loop except that test occurs at the end of loop
30. What will be output when you
will execute following c code?
#include<stdio.h>
int main(){
printf("%d\t",sizeof(6.5));
printf("%d\t",sizeof(90000));
printf("%d",sizeof('A'));
return 0;
}
Choose all that apply:
a)4 2 1 b) 8 2 1 c)
4 4 1 d)8 4 1 e
) 8 2 1
31. Which of the following language
is predecessor to C Programming Language?
a)A b) B c)
BCPL d) C++
32. C programming language was
developed by
A) Dennis Ritchie b) Ken
Thompson c) Bill Gates d) Peter Norton
33. C was developed in the year _____
34. Which of the following symbol is used to
denote a pre-processor statement?
a)! b) # c) ~ d) ;
35. Which escape character can be
used to begin a new line in C?
a) \a b) \b c) \m d) \n
36. Which escape character can be
used to beep from speaker in C?
a)\a b) \b c) \m d) \n
37. Character constants should be
enclosed between ___
a) Single quotes b) Double quotes
c) Both a and b d)
None of these
38. The maximum length of a
variable in C is ___
a)8 b) 16 c) 32 d) 64
39. What will be the maximum size
of a float variable?
a)1 byte b) 2 bytes c) 4 bytes d)8
bytes
40. What will be the maximum size
of a double variable?
41. A)1 byte b) 4 bytes c)
8 bytes d) 16 bytes
42. A declaration float a, b; occupies
____ of memory
43. The size of a String variable
is ______
44. Integer type is denoted as %_____
45. Long double is denoted as %______
46. Void is ___________
47. ______ Operator complements bits in a number.
48. ________ loop executes statements at least once.
49. In _________ loop condition is tested at the entry level itself.
50. If there is no match for any case in the switch, statement in __________ is executed.
51. Choose the correct answer
a) Casting refers
to implicit type conversion. b) Coercion refers to implicit type conversion. c)
Casting means coercion. d) Coercion refers to explicit type conversion.
52. Output of the following program fragment is x = 5; y = x++;
printf(“%d%d”, x, y);
a) 5, 6 b)
5, 5 c)
6, 5 d)
6, 6
53. ‘C’ allows a three-way transfer of control with the help of
a) unary operator b) relational operator
c) ternary operator d) comparison operator
54. The expression X=4+2%-8 evaluates
a) –6 b) 6 c)
4 d)
None
55. Which amongst the following is not a keyword?
a) external b) int c)
float d) double
56. The _______ operator is a technique to forcefully convert one data
type to the others
a) Cast b) Conversion c) Type d) Unary
57. The __________ statement causes immediate exit from the loop
overriding the condition test
a) Exit
b) Break c) Goto d) None
of the above
58. Which of the following
numerical value is invalid constant
a).75 b) 9.3e2 c) 27,512 d) 123456
59. If a=8 and b=15 then the statement x= (a>b) ? a:b;
a) assigns a value
8 to x b) gives an
error message
c) assigns a value
15 to x (d) assigns a
value 7 to x
60. Which of the following storage devices can store maximum amount of
data?
a) Floppy Disk b) Hard Disk c) Compact Disk d) Magneto
Optic Disk
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