← MES Jr. Grade
Past Questions
PROSPERITY (Opposite)
A)
Adversity
B)
Sickness
C)
Hardship
D)
Failure
“Prosperity” means success, wealth, or good fortune. Its opposite is “adversity,” which means hardship or misfortune. The other options are related to difficulty or lack of success, but “adversity” is the best antonym.
The value of x in the series 9, 81, x, 6561 is:
A)
729
B)
162
C)
90
D)
60
The series is powers of 9: 9 = 9^1, 81 = 9^2, so the next term should be 9^3 = 729, and then 6561 = 9^4. Therefore, x = 729. The other options do not fit the pattern of successive powers of 9.
Penicillin was invented by:
A)
Dr. Christian Bernard
B)
Alexander Flemming
C)
Alfred Nobel
D)
Dr. George Hume
Penicillin was discovered by Alexander Fleming in 1928. Option (b) is correct. The other options are incorrect: Dr. Christian Bernard was a heart surgeon, Alfred Nobel invented dynamite, and Dr. George Hume is not associated with the discovery of penicillin.
Public Health Engineering Department of Mizoram was:
A)
Established as a purely new Department
B)
Separated from PWD
C)
A part of Health Department
D)
Under UD&PA before
The Public Health Engineering Department (PHED) of Mizoram was carved out from the Public Works Department (PWD) and made a separate department. Hence, the correct option is (b). The other options are incorrect because it was not created as an entirely new department, not part of the Health Department, and not under UD&PA earlier.
Gandhiji evolved ‘non-cooperation and ‘satyagraha’ in:
A)
South Africa
B)
India
C)
England
D)
U.S.A
Mahatma Gandhi developed and first practiced the ideas of satyagraha and non-cooperation during his stay in South Africa, where he led struggles against racial discrimination. Later, he applied these methods in India during the freedom movement. The other options are incorrect because England and the U.S.A. were not the places where these concepts were evolved, and India was the place of their large-scale application, not their origin.
Anand was the sort of person who always looked on the _________ side of life
A)
clear
B)
bright
C)
broad
D)
illuminated
The fixed idiom is "look on the bright side of life," which means to be optimistic and see the positive aspect of a situation. The other options do not form a correct or common idiomatic expression in this context.
He sent a word to me that he would be coming late. (Improvement)
A)
sent word
B)
had sent a word
C)
sent words
D)
no improvement
The correct idiom is **'sent word'**, meaning 'sent a message/information'. So the sentence should be: **'He sent word to me that he would be coming late.'**
Why others are wrong:
- **(b) had sent a word**: unnecessary past perfect and 'a word' is not the usual idiom here.
- **(c) sent words**: incorrect usage; 'words' does not fit this meaning.
- **(d) no improvement**: incorrect because the original phrase 'sent a word' is not the standard idiomatic form in this context.
The number of nearest neighboring atoms in Face-centred cubic (FCC) crystal is
A)
six
B)
eight
C)
twelve
D)
none of these
In a face-centred cubic (FCC) crystal, each atom has 12 nearest neighbours: 4 in the same layer, 4 in the layer above, and 4 in the layer below. Therefore, the coordination number of FCC is 12. Options (a) 6 and (b) 8 are incorrect because they correspond to other crystal structures, not FCC.
The number of fundamental hand motion in micro-motion study are
A)
thirteen
B)
fifteen
C)
sixteen
D)
nineteen
In micro-motion study, the basic fundamental hand motions are known as therbligs. There are 17 therbligs in total, but the commonly taught fundamental hand motions for the hand are 13. Hence, the correct answer is thirteen. The other options do not match the standard count used in industrial engineering MCQs.
Which of the following is the most ductile material?
A)
mild steel
B)
copper
C)
zinc
D)
aluminium
Ductility is the ability of a material to be drawn into thin wires. Among the given options, copper is the most ductile. Mild steel and aluminium are ductile too, but less so than copper in general exam context. Zinc is comparatively brittle at room temperature, so it is not the most ductile.
Bar charts are suitable for
A)
minor works
B)
major works
C)
large projects
D)
all of these
Bar charts (Gantt charts) are simple planning and scheduling tools best suited for small or minor works where activities are limited and interdependencies are not very complex. For major works or large projects, network techniques like CPM/PERT are more suitable because they handle many activities and dependencies more effectively. Hence, the correct answer is minor works.
Time required for non conventional machining in comparison to the conventional machining is
A)
less
B)
equal
C)
more
D)
unpredictable
Non-conventional machining processes generally remove material at a slower rate than conventional machining. They are used for hard, brittle, or complex materials where conventional tools may not work well, so the machining time is usually higher. Hence, the time required is more.
Examples of line defects are
A)
Vacancies
B)
Dislocations
C)
Twins
D)
Stacking faults
Line defects in crystals are defects that extend along a line in the lattice. Dislocations are the classic example of line defects. Vacancies are point defects, while twins and stacking faults are planar (surface) defects.
In which of the following processes does electrode get consumed?
A)
TIG welding
B)
resistance welding
C)
thermit welding
D)
arc welding
In arc welding, the electrode is generally consumed as it melts and supplies filler metal to the weld pool. In TIG welding, the tungsten electrode is non-consumable. In resistance welding, no consumable electrode is used in the same sense. Thermit welding uses molten metal from the thermit reaction, not a consumed welding electrode.
Filler metal is not required in the following type of welding process:
A)
Oxy-oxy-acetylene welding
B)
Arc welding
C)
Resistance welding
D)
Oxy-oxy- hydrogen welding
In resistance welding, heat is generated by the electrical resistance at the joint and the parts are pressed together to form the weld. Since the base metals themselves fuse and join under pressure, filler metal is generally not required. In contrast, oxy-acetylene welding, arc welding, and oxy-hydrogen welding commonly use filler metal when needed to build up the joint.
PERT has the following time estimate
A)
one time estimate
B)
two time estimate
C)
three time estimate
D)
four time estimate
PERT (Program Evaluation and Review Technique) uses three time estimates for each activity: optimistic time, most likely time, and pessimistic time. These are used to compute the expected activity duration. Hence, the correct answer is three time estimate. The other options are incorrect because PERT does not use one, two, or four time estimates.
For gas welding of brasses, the most useful flame is:
A)
oxidizing flame
B)
reducing flame
C)
neutral flame
D)
no specific choice
In gas welding of brass, an oxidizing flame is most useful because brass contains zinc, and a slightly oxidizing flame helps reduce zinc fuming and gives better control in welding. A reducing flame is generally used for metals like aluminium and for preventing oxidation, while a neutral flame is the general-purpose flame for many steels. Hence, the correct choice is oxidizing flame.
A model of casting which is constructed in such a way that it can be used for forming an impression in damp sand is defined as
A)
molding
B)
pattern
C)
damper
D)
prototype
In casting, the model used to create an impression in damp sand is called a pattern. It is placed in the molding sand to form the cavity into which molten metal is poured. 'Molding' is the process, 'damper' is unrelated, and 'prototype' is a general model but not the specific foundry term.
Which one of the following is not a queing theory model?
A)
orders waiting to be processed
B)
machines waiting to be repaired
C)
machines in an assembly line to be operated
D)
batch of finished products waiting to be transported
Queuing theory deals with situations where customers/jobs wait for service, such as orders waiting to be processed, machines waiting to be repaired, or finished products waiting to be transported. In an assembly line, machines are generally part of a production sequence rather than a waiting-line system, so this is not a typical queuing theory model.
Graphical method, simplex method and transposition method are concerned with
A)
break-even analysis
B)
value analysis
C)
linear programming
D)
inventory control
Graphical method, simplex method, and transposition method are all standard techniques used to solve linear programming problems. The graphical method is used for two-variable LP problems, the simplex method is the general iterative optimization method, and the transposition method is another LP-solving approach. The other options are unrelated: break-even analysis deals with cost-volume-profit relationships, value analysis with improving value of products/services, and inventory control with stock management.
The prime objective of value engineering is to minimize
A)
cost of production
B)
time of production
C)
cost of labor
D)
cost of value
Value engineering aims to improve the function of a product or process at the lowest possible total cost. Its prime objective is to reduce unnecessary costs without reducing performance or quality. Among the given options, this is best represented by 'cost of production'. The other options are too narrow or incorrect: time of production and cost of labor are only parts of the total cost, and 'cost of value' is not a standard term.
Statistical quality control techniques are based on the theory of
A)
quality
B)
statistics
C)
probability
D)
all of these
Statistical Quality Control (SQC) uses statistical methods to monitor and control quality, and its control charts and acceptance sampling are fundamentally based on the theory of probability. Statistics provides the tools for analysis, but the underlying basis is probability. Hence, the correct option is (c) probability.
The probability distribution of project completion time in PERT is
A)
Gaussian
B)
gamma
C)
beta
D)
binomial
In PERT, the project completion time is assumed to follow a beta distribution because activity times are uncertain and bounded between optimistic and pessimistic estimates. The beta distribution is flexible and suitable for modeling such skewed time estimates. Gaussian is not used in standard PERT assumptions, binomial is for discrete trials, and gamma is not the classical PERT distribution.
Which of the following conditions does not favour the production of discontinuous chips?
A)
brittle material
B)
large chip thickness
C)
low cutting speed
D)
large rake angle
Discontinuous chips are generally formed when the material is brittle, the chip thickness is large, and the cutting speed is low. These conditions promote fracture rather than smooth plastic flow. A large rake angle, however, reduces cutting deformation and tends to favor continuous chip formation, so it does not favor discontinuous chips.
Carbon steel is
A)
made by adding carbon in steel
B)
refined from cast iron
C)
an alloy of iron and carbon with variable quantities of phosphorus and sulphur
D)
extremely brittle
Carbon steel is essentially an alloy of iron and carbon. In practice, it may also contain small variable amounts of impurities such as phosphorus and sulphur. Option (a) is incorrect because steel is not made by simply adding carbon to already formed steel in this context; rather, carbon is an alloying element in steel. Option (b) refers to cast iron being refined to produce steel, which is a process, not the definition of carbon steel. Option (d) is incorrect because carbon steel is not necessarily extremely brittle; its properties depend on carbon content.