CPI, Process, PD AND ED

Question 1

Manufacture of paper pulp from pulp employing the Foudrinier machine

Answer 1

Kraft Process

Question 2

Method of recovering hydrogen from water gas, carbon monoxide is reacted with steam at 500C in the presence of catalyst to form carbon monoxide and hydrogen

Answer 2

Bosch Process

Question 3

Extraction of aluminum from bauxite

Answer 3

Hall’s Process

Question 4

Process of recovering sulfur from the buried porous cap rock of a salt done and delivering it above ground as a product of suitable purity and condition for use

Answer 4

Frasch process

Question 5

Production of ammonia by direct combination of nitrogen and hydrogen at 600C and under 200-300 atmospheric pressure in the presence of catalyst.

Answer 5

Haber-Bosch Process

Question 6

Soda ash manufacture

Answer 6

Solvay process

Question 7

Sulfonation and extraction process in the manufacture of phenol

Answer 7

Dennis Bull Process

Question 8

Rubber reclaiming process in vulcanized scraps are introduced into a mixer (Banbury) where in the presence of air it is worked under pressure and at high temperature fpor a very short time

Answer 8

Babbyry Process

Question 9

Method of recovering gold and silver from their ores into a soluble from by treatment with cyanides

Answer 9

Cyanidation Process

Question 10

Process for reduction of lead ores; small charge is roasted slowly at low temperature, the lead being collected outside the furnace by means of heat

Answer 10

Carinthian process

Question 11

Formation a rust resistant coating on iron, base metal by oxidation with superheated steam

Answer 11

Barff process

Question 12

Copper or iron sulfides fused and blown with air to burn out the sulfur content

Answer 12

Holloway Process

Question 13

Recovering copper from its sulfide ores by leaching with cupric and sodium or calcium chloride solution and electrolyzing the resulting cuprous chloride liquor in cells with impure copper anodes

Answer 13

Hoepener Peocess

Question 14

Catalysts used in the manufacture of sulfuric acid y chamber and contact processes are respectively

Answer 14

Oxides of nitrogen and V2O5 on a porous carrier

Question 15

In contact process, SO3 is absorbed in 97% H2SO4 and not in water because

Answer 15

Water forms an acid mist which is difficult to absorb

Question 16

Contact process

Answer 16

Yields acid of higher concentration than chamber process

Question 17

20%Oleum means that in 100lb, there are 20lb of

Answer 17

So3 and 80% H2SO4

Question 18

producer gas contains mainly of

Answer 18

CO, CO2, N2, H2

Question 19

Oxygen is produced by fraction of air using

Answer 19

Both Lindes and Claudes process

Question 20

Raw materials for Solvay process for manufacture of the soda ash are

Answer 20

Salt, limestone , ammonia and coke oven gas

Question 21

Economics of SOLVAY PROCESS DEPENDS upon the efficiency of

Answer 21

Ammonia recovery and size of plant

Question 22

Cement mainly contains

Answer 22

CaO, SiO2, Al2O3

Question 23

Gypsum is

Answer 23

Calcium Sulfate

Question 24

Glaubers salt is

Answer 24

Sodium sulfate decahydrate

Question 25

Permanent hardness of water is due to the presence of calcium and magnesium

Answer 25

Sulfates and chlorides

Question 26

Widely used method for conditioning of boiler feed water is

Answer 26

Hot-lime soda process

Question 27

Hydrazine is largely used in

Answer 27

As rocket fuel

Question 28

Trinitro-toluene is

Answer 28

Explosive

Question 29

Oil is

Answer 29

A mixture of glycerides of fatty acids

Question 30

Wax is

Answer 30

A mixture of fatty esters of polyhydric alcohols except glycerin.

Question 31

Unsaturated oils compared to satd oils have

Answer 31

Lower melting point and higher reactivity to oxygen

Question 32

Rancidity if oil can be reduced by

Answer 32

Hydrogenation

Question 33

Solvent used for extraction of oil is

Answer 33

Methyl-Ethyl Ketone

Question 34

Catalyst used in hydrogenation if oil is

Answer 34

Nickel

Question 35

SO2 is bubbled through a hot sugar cane juice to

Answer 35

Act as an acidfying agent

Question 36

Essential oils ate usually obtained using

Answer 36

Steam distillation

Question 37

Plasticizers are added to paints to

Answer 37

Give elasticity and prevent cracking of the film

Question 38

Which oil is preferred for paint maunfacture

Answer 38

Drying oil

Question 39

Function of thinner in paint is

Answer 39

Suspend pigments and dissolve film forming materials

Question 40

Varnish does not contain

Answer 40

Pigment

Question 41

Enamels

Answer 41

Give good glossy finish

Question 42

Metallic soap is

Answer 42

Aluminum or calcium salt of fatty acids

Question 43

Fat splitting catalyst is

Answer 43

ZnO

Question 44

Free alkali in toilet soap is

Answer 44

Less than in laundry soap

Question 45

Soap cannot be used in hard water beacause

Answer 45

They form insoluble calcium soaps which precipitate

Question 46

Builders are added in soap to

Answer 46

Boost cleaning power

Question 47

Bio degradable detergents

Answer 47

Can be readily oxidized

Question 48

``` Which of the following is a detergent a. Fatty alcohol B. Alkyl benzene sulfonate C. Fatty acids D. Methyl Chloride ```

Answer 48

Alkyl benzene sulfonate

Question 49

Yellow glycerin is made into white, using

Answer 49

At activated carbon

Question 50

The only strength of stress grade lumber that can be precisely determined without breaking the piece is

Answer 50

Stiffness

Question 51

The chief difference between exterior grade plywood and interior grade plywood is

Answer 51

That different types of glue are used

Question 52

Warp, wane and checks are all factors to help determine the quality of

Answer 52

Stress grade lumber

Question 53

Brinell number is a measure of

Answer 53

Hardness

Question 54

A major classification group of stainless steels 6% to 22% nickel in addition to 16% to 26% chromium. This group differs from the other two major groupings in that its steels

Answer 54

Are non-magnetic

Question 55

The ultimate strength divided by the allowable stress is

Answer 55

Factor of safety

Question 56

If an engineering structure is to be designed against rupture of any of its members under steady load, the factor of safety is ratio based on working stress and

Answer 56

Ultimate strength

Question 57

The unit lateral deformation of a body under stress divided by unit longitudinal deformation is

Answer 57

Poissons ratio

Question 58

A thin wire is subject to a tensile stress. If the temperature is constant, the electric resistance of the stressed wire with respect to the electric resistance of the unstressed wire is

Answer 58

Increased

Question 59

The offset method is used to find a property of metals that do not have a well-defined stress-strain curve such as steel. This property is called

Answer 59

Yield point

Question 60

The stress in an elastic material is

Answer 60

Proportional to the displacement of the material acted in by the force

Question 61

Normally, the diameter of a rivet is 1/16 inches less than that of the hole in which it is to fit. This is to ensure easy entrance of a hot rivet. In boiler calculations, the rivet is assumed to

Answer 61

Fill the hole after driving

Question 62

The intermittent welds generally used to hold material in place temporarily are called

Answer 62

Double vee

Question 63

In the construction of a vinegar container tank, one of these is not recommended

Answer 63

Brass

Question 64

Bracket supports are most suitable for

Answer 64

Thick walled vertical vessels

Question 65

Skirt support is most suitable for

Answer 65

Tall horizontal vessel

Question 66

Circular cylindrical cans of volume Vo are to be manufactured with both ends closed. The ratio of the diameter and height that will require minimum amount of metal to make each can is

Answer 66

D/H =1.0

Question 67

The simplest mode of control which is characteristic of a two position control commonly utilized in a thermostat for controlling the temperature of heaters, air con, refrigerators, etc.

Answer 67

On-off control

Question 68

It is a control system in which the control action is independent of the output

Answer 68

Open-loop system

Question 69

An arrangement pf physical components connected or related in such a manner as to command, direct or regulate itself or another system.

Answer 69

Control system

Question 70

It is the actual response obtained from the control system. It may or may not be equal to the specified response by the input

Answer 70

Output

Question 71

A control system in which the control action is somehow dependent on the output.

Answer 71

Closed-loop control system

Question 72

A property of a closed loop system which permits the output o be compared with the input to the system so that the appropriate control action may be formed as some fraction of the output and the input

Answer 72

Feedback control system

Question 73

A frequency response measure of how well the system responds to variations in the input signal.

Answer 73

Bandwidth

Question 74

A signal defined at, or of interest at, only discrete instants of the variable (upon which it depends)

Answer 74

A digital signal

Question 75

A device that converts an analog or continuous signal into a discrete or digital signal

Answer 75

Analog-to digital (A/D) converter

Question 76

It is used to convert one signal or energy form into another

Answer 76

Transducer

Question 77

The part of the response which approaches zero as time approaches infinity

Answer 77

Steady state response

Question 78

The integral of a unit step function is also known as

Answer 78

Unit ramp function

Question 79

When the total number of variables in a process is greater than the number of independent equations that can be set up, the process is said to be

Answer 79

Under specified

Question 80

A control structure with two feedback controllers with the output of the primary controller changing the set point of the secondary controller whose output goes to the final controller.

Answer 80

Cascade controller

Question 81

A type of advanced control system that identifies continuously online the parameters of the process as they change and returns the controller appropriately.

Answer 81

Adaptive control

Question 82

A sensor usually made of a semiconductor that utilizes the effect of temperature on the resistance to current is called a

Answer 82

Thermistor

Question 83

A PI controller of a first order process is subjected to a unit step input . If the integral constant is fixed, increasing the proportional gain will

Answer 83

Decrease the overshoot

Question 84

A PID controlled process has a highly oscillating response. The process can be stabilized by

Answer 84

The decreasing proportional gain

Question 85

The integral of a DiRac function is

Answer 85

Step function

Question 86

In the control of pressure in a distillation column, there is no need to include

Answer 86

Derivative control

Question 87

A PI controller of a first order process is subjected to a init step input. If the integral constant is fixed, decreasing the proportional gain will

Answer 87

Increase overshoot

Question 88

A proportional controller exhibits a large offset. This offset can be eliminated without altering the proportional constant Kc by

Answer 88

Adding an integral control