MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Chemical Engineering
Chemical Engineering Basics
Quiz 25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Q.1
The maximum value, which the residual stress in a material can reach is the __________ of the material.
Elastic limit
Plastic limit
Yield stress
Breaking stress
Q.2
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
Hydrochloric acid
Methyl alcohol
Formic acid
Nitric acid
Q.3
Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost
Only
Plus variable cost
Plus overhead cost
Plus selling expenses
Q.4
Direct conversion of thermal energy to electrical energy is facilitated by the
Fuel cells
Photo voltaic cell
Magneto hydrodynamic generator
None of these
Q.5
Laser is a device to produce
Gamma rays
Microwaves
A beam of white light
A beam of coherent light
Q.6
Tin based white metals are used, where bearings are subjected to
High pressure & load
Low pressure & load
High temperature
Large surface wear
Q.7
The fugacity of liquid water at 298 K is approximately 3171 P
a
. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be
3171P
a
3567P
a
1.01 x 10⁵P
a
5000P
a
Q.8
A colloidal system, in which a liquid is dispersed in gas is called a/an
Gel
Aerosol
Foam
Emulsion
Q.9
Disposable patterns are made of
Metal
Polystyrene
Rubber
Wood
Q.10
__________ addition increases the depth of hardness of steel.
Chromium
Nickel
Tungsten
Vanadium
Q.11
When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
Partial pressure of water vapour is less than the total pressure
Humidity is < 100% & dew point temperature of air has not reached
Dew point temperature of air has not reached & air is not saturated fully
Air is fully saturated
Q.12
When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
Partial pressure of water vapour is less than the total pressure
Humidity is < 100% & dew point temperature of air has not reached
Dew point temperature of air has not reached & air is not saturated fully
Air is fully saturated
Q.13
Which of the following approaches the ideal gas behaviour most closely?
Wet steam
Saturated steam
Superheated steam
Saturated water
Q.14
With increase in temperature, the electrical conductivity of a __________ decreases.
Semi-conductor
Metal or alloy
Dielectric
None of these
Q.15
The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then
Wet bulb temperature=dry bulb temperature
Wet bulb temperature=dew point temperature
Saturation temperature=dew point temperature
All of the above
Q.16
The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x
0.5
while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)
X
1.5
X
0.8
X
-1.5
X
-0.8
Q.17
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
Supercharging
Wall temperature
Compression ratio
Engine speed
Q.18
Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
18
16
14
12
Q.19
A pycnometer is used for the measurement of
Flow rate of molten metal
Specific gravity of a liquid
Composition of alloys
Concentration of a solution
Q.20
Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?
Galvanising
Tinning
Sheardising
None of these
Q.21
Which of the following is an ore dressing operation?
Classification
Smelting
Roasting
None of these
Q.22
A material being tested for endurance strength is subjected to the __________ load.
Impact
Completely reversed
Dynamic
Static & dynamic
Q.23
__________ of grey cast iron produces white cast iron.
Tempering
Rapid heating
Rapid cooling
Slow cooling
Q.24
Which of the following pairs is not correctly matched?
Uranium - 233 : Fertile material
Bindingenergy : Mass defect
Scattering : Absorption cross-section
Number of nucleons : Mass number
Q.25
In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of
Chromium, tungsten & vanadium
Tungsten, chromium & vanadium
Tungsten, vanadium & chromium
Tungsten, chromium & molybdenum
Q.26
Property of a material to resist a tensile force without giving away is a measure of its
Stiffness
Toughness
Resilience
Tenacity
Q.27
If a solid is compressed adiabatically in its elastic range, its __________ remains constat
Internal energy
Enthalpy
Entropy
Temperature
Q.28
Filler metal is used in __________ welding.
Braze
Electric spot
Projection
Seam
Q.29
Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
Piercing
Spinning
Drawing
Extrusion
Q.30
It is possible to form martensite
Sometimes by cold working
Sometimes without nucleation
Sometimes by gas quenching
Only in iron based alloys
Q.31
Which of the following is the most elastic material?
Plastic
Glass
Steel
Rubber
Q.32
Maximum consumption of limestone is in the __________ industry.
Iron and steel
Cement
Glass
Fertiliser
Q.33
Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
Spigot and socket
Flanged iron
Collar
Expansion
Q.34
Which of the following is not a cupro-nick-el alloy?
German silver
Monel metal
Muntz metal
None of these
Q.35
Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
Horizontal
Vertical
Inclined
Any
Q.36
An example of unsteady non uniform flow is the flow of liquid under pressure through a
Tapering pipe at constant flow rate
Tapering pipe at either decreasing or increasing flow rate
Long pipeline of constant diameter
None of these
Q.37
A material being tested for endurance strength is subjected to the __________ load.
Impact
Completely reversed
Dynamic
Static & dynamic
Q.38
As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.
Butt
Lap
Welded
None of these
Q.39
Speisses is a mixture of the following:
Arsenides of heavy metals
Antimonides of heavy metals
Arsenides & antimonides of heavy metals
Iron, cobalt and nickel
Q.40
LVDT used for displacement measurement is a/an __________ transducer.
Passive
Active
Capacitive
None of these
Q.41
What is the pH of distilled water?
0
1
7
14
Q.42
Which of the following is not a dielectric material?
Cotton, silk and paper
Asbestos, glass, porcelain and mica
Rubber and polymeric resins
All of the above
Q.43
Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is
Chromium
Nickel
Zinc
Aluminium
Q.44
Which of the following if present in iron ore, enhances its value?
Alumina
Alkali oxide
Lime & Magnesia
None of these
Q.45
Killed steels
Are free from oxygen
Contain not even traces of sulphur & phosphorous
Are produced by L.D. process only
Contain minimum impurity level
Q.46
Hot working of lead is carried out at
75°C
373°K
150°C
Room temperature
Q.47
Cast iron contains __________ percent carbon.
2.5
3.75
4.75
5.25
Q.48
The condition of diffraction from a crystal is given by
nλ = 2d Sin θ
λ = d Sin 2θ
λ = 2d Sin 2θ
nλ = d Sin θ
Q.49
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be
100% indirect reduction
100% direct reduction
50-60% indirect reduction
30-40% indirect reduction
Q.50
Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its
Lower cost
Abundant availability
Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry
None of these
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page