Font size
S
M
L
XL
WorksheetsMATERIAL TECHNOLOGY
Total questions: 108
Worksheet time: 54mins
Name
Class
Date
1.
Bonding between two __________ is called Atomic bonding.
a)
Atoms
b)
Molecules
c)
Non Polars
d)
Isotopes
2.
Conversion of atom into ion by removing one or more atoms is called ______________
a)
Atomization
b)
Ionization
c)
Polymerization
d)
Catalyzation
3.
An Atom is the smallest constituent unit, size is around ________________
a)
100 mm
b)
100 Micron
c)
100 Nanometers
d)
100 Pico meters
4.
The bond may result from ________________ of attraction between atoms with opposite charges.
a)
Electrostatic force
b)
Dynamic force
c)
Electric discharge
d)
Kinetic force
5.
Atoms of most of the elements form bonds with one another in order to achieve a ____________ electronic configuration.
a)
Stable
b)
Unstable
c)
Horizontal
d)
Vertical
6.
Ionic bond is a ____________________.
a)
Primary bond
b)
Secondary bond
c)
Dipole bond
d)
Not a bonding type
7.
Primary bond is a ______________________.
a)
Interatomic bond
b)
Intermolecular bond
c)
Free electrons
d)
Valence electrons
8.
Secondary bond is a _________________.
a)
Interatomic bond
b)
Intermolecular bond
c)
Free electrons
d)
Valence electrons
9.
Example for Ionic bond is __________________.
a)
Sodium Chloride
b)
Hydrogen fluoride
c)
Water
d)
Chlorine
10.
Example for Covalent bond is __________________.
a)
Sodium Chloride
b)
Hydrogen fluoride
c)
Water
d)
Carbon
11.
The week force is also known as _________________.
a)
Pneumatic force
b)
Hydraulic force
c)
Vander-waals force
d)
Dipole
12.
The word "Electron Cloud" is related to __________________.
a)
Ionic bond
b)
Covalent bond
c)
Metalic bond
d)
Bond Energy
13.
Covalent bond is also known as ___________________.
a)
Vander-waals force
b)
Homopolar bond
c)
Dipole bond
d)
Valence electrons
14.
Week Vander-waal force is present in _____________ type of bond.
a)
Primary
b)
Secondary
c)
Dipole
d)
Water
15.
Which among the following bonds conducts electricity?
a)
Ionic
b)
Covalent
c)
Metallic
d)
Secondary
16.
Ionic bond exists due to electrostatic force of attraction between Positive and Negative ions of different elements. One looses its Valence electron and other accepts it is called __________.
a)
Ionic bond
b)
Covalent bond
c)
Metallic bond
d)
Secondary bond
17.
The ionic bond exists in _______ only.
a)
Solids
b)
Liquids
c)
Gases
d)
Nowhere
18.
Covalent solids are SOLUBLE in __________________.
a)
Water
b)
Benzene and toluene
c)
Not soluble
d)
Evaporates
19.
The solid which are NOT SOLUBLE either in water or in benzene, toulene, etc. is ____________.
a)
Ionic solid
b)
Covalent solid
c)
Metalic solid
d)
Graphite
20.
Glass is an example for ________________- type of solid
a)
Amorphous
b)
Crystalline
c)
Orthorhombic crystal
d)
Cubic crystal
21.
Metals, Quartz are an example for _____________ type of solid.
a)
Amorphous
b)
Crystalline
c)
Orthorhombic crystal
d)
Cubic crystal
22.
In Amorphous solid, Atoms or Molecules are arranged in _______________ pattern.
a)
Regular
b)
Random
c)
Straight line
d)
Circular
23.
In Crystalline solid, Atoms or Molecules are arranged in ________________ pattern.
a)
Periodic arrangement
b)
Random arrangement
c)
Straight line
d)
Circular
24.
A small body having a regular polyhedral form, bounded by smooth surface is called _______.
a)
Grains
b)
Volatile
c)
Voids
d)
Crystals
25.
Plastics and Woods are an example for _____________ solid.
a)
Amorphous
b)
Crystalline
c)
Positive
d)
Negative
26.
Amorphous solids are ___________________.
a)
True solids
b)
Pseudo solids
c)
Liquids
d)
Gases
27.
A ______________ structure is a regular array of atoms arranged and closely packed with minimum unoccupied space.
a)
Amorphous
b)
Crystalline
c)
Bricks
d)
Wood
28.
Atoms arranged in a crystal in a particular fashion, general arrangements of particles in to small parts is called ________________.
a)
Unit cell
b)
Space lattice
c)
Miller indices
d)
Crystal directions
29.
An infinite three dimensional pattern of atoms in space is called ______________.
a)
Unit cell
b)
Space lattice
c)
Miller indices
d)
Crystal directions
30.
Chromium like hard material is an example for ___________ structure.
a)
BCC
b)
FCC
c)
HCP
d)
Undefined
31.
Aluminium like soft material is an example for _____________ structure.
a)
BCC
b)
FCC
c)
HCP
d)
Undefined
32.
The total number of atoms in B.C.C structure is _____.
a)
8
b)
9
c)
12
d)
14
33.
The total number of atoms in F.C.C structure is _____.
a)
8
b)
9
c)
12
d)
14
34.
The coordinate number for B.C.C structure is _____.
a)
8
b)
9
c)
12
d)
14
35.
The coordinate number for H.C.P structure is _____.
a)
8
b)
9
c)
12
d)
14
36.
The missing or misalignment of atoms or ions in an ideal crystal structure or lattice is called _______________.
a)
Crystal perfection
b)
Crystal Defect
c)
True solid
d)
Super cooled liquid
37.
Whenever an extra atom occupies the prearrangement of atoms is called ____________.
a)
Vacancies
b)
Substitutional defects
c)
Interstitial defects
d)
Frenkel defects
38.
Frenkel defect is an example of ________________.
a)
Point defect
b)
Line defect
c)
Surface / Plane defect
d)
Perfection
39.
Grain boundary and Twin boundary are an example for _________________.
a)
Point defect
b)
Line defect
c)
Surface / Plane defect
d)
Perfection
40.
When homogeneous mixtures of two or more kind of atoms occur in the solid state is called _________________.
a)
Solid solution
b)
Liquid solution
c)
Gas solution
d)
Solvent
41.
Which of the following is the solid solution of Copper and Zinc?
a)
Bronze
b)
Brass
c)
Gun metal
d)
Y- alloy
42.
Which of the following is the solid solution of Copper and Tin?
a)
Bronze
b)
Brass
c)
Monel metal
d)
Y- alloy
43.
Which of the following is the Intermediate solid solution of Iron and Carbon?
a)
Bronze
b)
Brass
c)
Monel metal
d)
Steel
44.
If the atoms OCCUPY similar lattice points within the crystal structure is known as ________________ Solid solutions.
a)
Ordered substitutional
b)
Disordered substitutional
c)
Interstitial
d)
Insoluble
45.
If the atoms NOT OCCUPY similar lattice points within the crystal structure is known as ________________ Solid solutions.
a)
Ordered substitutional
b)
Disordered substitutional
c)
Interstitial
d)
Insoluble
46.
The homogeneous mixture of Two or more elements of which atleast one is metal is called _____________.
a)
Phase
b)
Alloy
c)
Equlibrium
d)
Liquid
47.
Ceramic is an example of _______________ alloy.
a)
Single phase
b)
Multi phase
c)
Solid solution
d)
Interstitial
48.
The graphical representation diagram (ie.) Equilibrium diagram or Constituent diagram is other wise called as __________.
a)
Free hand sketch
b)
Geometrical diagram
c)
Phase diagram
d)
Matrix
49.
Phase diagram indicates the Temperature at which the solid alloy is start and finish _______.
a)
Melting
b)
Vapourizing
c)
Solidifying
d)
Equilibrium
50.
Unary phase diagram is ___________ component system
a)
One
b)
Two
c)
Three
d)
Four
51.
Binary phase diagram is _________ component system.
a)
One
b)
Two
c)
Three
d)
Four
52.
The point of intersection (ie.) Solid, liquid and Vapour coexist in equilibrium state is called _______________.
a)
Uneven point
b)
Intersecting point
c)
Triple point
d)
Isotropic
53.
The physically separable and chemically homogenous of distinct material is called _______________.
a)
Components
b)
Phases
c)
Solutes
d)
Solvents
54.
The metals begins to conver from liquid state to solid state when temperature drops is called _____________.
a)
Solidification
b)
Melting
c)
Synchronizing
d)
Manufacturing
55.
Depend upon rate of cooling, the amount of impurities in the melt may form the growth of ____________ during the process.
a)
Dendrites
b)
Grains
c)
Surfaces
d)
Partition
56.
The curve which helps to determine the temperature at which the phase changes from liquid to solid is ______________.
a)
Heating curve
b)
Cooling curve
c)
Bezier curve
d)
Straight line
57.
Iron has many _______________ forms delta (ᵟ), gamma(ᵞ) and alpha (α) ie.,. different structural changes of an elements.
a)
Allotropic
b)
Isotropic
c)
Horizontal
d)
Vertical
58.
α ,β, γ, δ are the allotropic forms of _________.
a)
Aluminium
b)
Iron
c)
Zinc
d)
Copper
59.
The graphical representation of the effects of a temperature and composition upon the phases present in an alloy, plotting temperature along Y-axis and Percentage composition along X-axis.
a)
Heating curve
b)
Iron carbon equilibrium diagram
c)
Mapping
d)
Schematic diagram
60.
The Pure iron containing only 0.008% Carbon is called __________, in microconstituents of steel.
a)
Ferrite
b)
Cementite
c)
Pearlite
d)
Austenite
61.
A compound of iron and carbon ,extremely hard and brittle ,contains 93.33% iron & 6.67 % carbon is called _____________.
a)
Ferrite
b)
Cementite
c)
Pearlite
d)
Austenite
62.
The microconstituent which is an intimate mixture of Ferrite (88.5%) and Cementite (11.5%) is called _____________, exist at 723 ˚C.
a)
Ferrite
b)
Cementite
c)
Pearlite
d)
Austenite
63.
The solid solution of Carbon in Iron, dissolve upto 2% Carbon at 1148 ˚C is ___________ which is above Upper Critical Temperature.
a)
Ferrite
b)
Cementite
c)
Pearlite
d)
Austenite
64.
Steel is having upto ______ of Carbon.
a)
0.002
b)
0.02
c)
0.2
d)
2
65.
At 0.83% C, the point is called ________________.
a)
Eutectoid point
b)
Hypo eutectoid
c)
Hyper eutectoid
d)
Eutectic point
66.
Less than 0.83% C, the region is called _____________.
a)
Eutectoid point
b)
Hypo eutectoid
c)
Hyper eutectoid
d)
Eutectic point
67.
More than 0.83%C, the region is called _____________.
a)
Eutectoid point
b)
Hypo eutectoid
c)
Hyper eutectoid
d)
Eutectic point
68.
Ferrite is having _______% of Carbon
a)
8.0E-5
b)
0.05
c)
0.1
d)
0.15
69.
In Iron carbon diagram, X-axis represents _______________.
a)
Time
b)
Temperature
c)
% Carbon
d)
% Iron
70.
The lower critical temperature is __________.
a)
1130 ˚C
b)
723 ˚C
c)
1200 ˚C
d)
1500 ˚C
71.
The sequence of heating, soaking and cooling operations designed to get the desired combination of properties in metals and alloys in solid state is called ______________.
a)
Heat treatment
b)
Manufacturing
c)
Machining
d)
Polymerizing
72.
The TOOL which can be used to carry the HT pot or job pieces to load and unload from furnace is _____________. Ensure it is dry before removing any work from liquid carburizing pot.
a)
Goggles
b)
Tongs
c)
Heat resistant clothe
d)
Face mask
73.
The form of energy that is directly related the temperature of the body.
a)
Heat
b)
Sound
c)
Light
d)
Chemical
74.
Ferrite is pure iron containing only _____________ of Carbon.
a)
8.0E-5
b)
0.015
c)
0.04
d)
0.0667
75.
The temperature in the Fe-C diagram indicated by a plateau; at which metal changes its magnetic properties is called as _______________.
a)
Lower Critical Temperature
b)
Eutectic point
c)
Curie point
d)
Nucleation point
76.
TTT stands for _____________________________.
a)
Time Temperature Travel
b)
Temperature Thermometer Testing
c)
Thermal Temperature Testing
d)
Time Temperature Transformation
77.
Martensite is a micro constituent of steel which is appearing like ___________ and it is very hard and brittle.
a)
Granule like
b)
Needle like
c)
Soft spot
d)
Tiny globule like
78.
This microconstituent is appear like Tiny globule form _______________.
a)
Martensite
b)
Bainite
c)
Austenite
d)
Pearlite
79.
The sequence of HT process - Heating, _______________, Cooling, Reheat if required.
a)
Burning
b)
Loading
c)
Soaking
d)
Unloading
80.
Soaking time for hardening is 1 hour for every 25mm ________________.
a)
Length
b)
Volume
c)
Thickness
d)
Density
81.
Find the appropriate "Purpose of Heat treatment" amongst the list below.
a)
To obtain desired properties
b)
To remove material
c)
To prevent from oxidation
d)
To scratch the material
82.
The type of annealing applied to HCS for minimum hardness, maximum ductility and machinability; it will produce a global form of carbide in steel.
a)
Stress annealing
b)
Bright annealing
c)
Recrystallisation annealing
d)
Speroidizing
83.
Internal stress can cause more problems in __________________ material.
a)
Ductile
b)
Brittle
c)
Elastic
d)
Tough
84.
The problem caused during Machining, Welding, case hardening is ___________.
a)
Under size
b)
Scoring
c)
Internal stress
d)
Fatigue
85.
During __________ process, the cooling will be SLOW after heating to Austenite phase by switching off the power supply.
a)
Annealing
b)
Normalizing
c)
Hardening
d)
Tempering
86.
The__________ annealing is done in a sealed container to minimize oxidation of components.
a)
Full annealing
b)
Box annealing
c)
Bright annealing
d)
Spherodizing
87.
Annealing in a protective medium such as Argon or Nitrogen to prevent from discolouration is __________________ .
a)
Full annealing
b)
Box annealing
c)
Bright annealing
d)
Spherodizing
88.
Steel becomes hard when cooled ______________ from Austenite during Hardening process.
a)
Slowly
b)
Rapidly or fastly
c)
Isothermal
d)
Austempering
89.
Martensite is __________________ & ________________.
a)
Soft & Tough
b)
Hard & Brittle
c)
Elastic & Elongate
d)
Arrange & Allocate
90.
Hardening will be successful, when the formation of Austenite is ________________.
a)
Homogeneous
b)
Isotropic
c)
Anisotropic
d)
Not bonded well
91.
The process which should be done immediately after hardening is _________________.
a)
Annealing
b)
Machining
c)
Hardening
d)
Tempering
92.
By changing the chemical composition at the surface of the steel is called ______________.
a)
Case hardening
b)
Surface hardening
c)
Austempering
d)
Martempering
93.
Without changing the chemical composition at the surface is called _______________.
a)
Case hardening
b)
Surface hardening
c)
Austempering
d)
Martempering
94.
The energizer used to accelerate the process during carburizing is _______________.
a)
Barium
b)
Silicon
c)
Barium Carbonate
d)
Cyanide
95.
Liquid carburizing is also known as _____________ carburizing.
a)
Solid
b)
Vaccum
c)
Gassous
d)
Salt bath
96.
Type of flame hardening in which burner is moved over a rotating workpiece is _____________.
a)
Spinning method
b)
Progressive method
c)
Stationary method
d)
Progressive spinning method
97.
Oxy-acetylene fuel blow pipe followed by spraying jet of water as coolent is used in __________ hardening.
a)
Induction
b)
Flame
c)
Laser
d)
Electron beam
98.
The coil carries alternate current to harden the steel is called ___________- hardening.
a)
Induction
b)
Flame
c)
Laser
d)
Electron beam
99.
Austempering transform the austenite structure to ______________.
a)
Bainite
b)
Pearlite
c)
Martensite
d)
Ledeburite
100.
In Sub zero treatment, cooled suddenly in bath having temperature between -30˚C and -70˚C for transforming _____________ to martensite.
a)
Pearlite
b)
Retained Austenite
c)
Austenite
d)
Ferrite
101.
A box like chamber carrying a refractory lining inside with temperatrue controls and indicating device is _______________.
a)
Furnace
b)
Tools
c)
Equipments
d)
Thermometer
102.
Arc furnace is a type of ___________ furnace.
a)
Gaseous fuel fired
b)
Liquid fuel fired
c)
Batch type
d)
Electrically heated
103.
The box furnace in which special refractory material is "coated" is ____________ type furnace.
a)
Muffle
b)
Pit
c)
Lift off cover
d)
Bogie hearth
104.
The furnace used below the gound level is called ________________.
a)
Muffle
b)
Pit
c)
Lift off cover
d)
Bogie hearth
105.
Lift off cover furnace is also called as _________________ .
a)
Ball type
b)
Bell type
c)
Balloon type
d)
Bowl type
106.
Conveyor furnace is ______________ type of furnace.
a)
Batch
b)
Continuous
c)
Constant
d)
Rotary
107.
The fuel used generally in liquid fuel is ______, which can be stored easily.
a)
Water
b)
Oil
c)
Oxy-acetylene
d)
Electric
108.
Commonly used salts used in Salt bath furnace is _____________.
a)
Coal
b)
Kerosene
c)
Nitrates
d)
Chromium
Reset
