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Latest NMDC Maintenance Assistant Mechanical Exam Question (Objective Questions), MCQ in English

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Question Bank NMDC Maintenance Assistant Mechanical (Trainee) Exam - English

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Mechanical

Question 1Single Answer

What is the primary use of a spud wrench?

A
Tightening bolts
B
Aligning holes in structural steel
C
Cutting metal
D
Measuring angles

Question 2Single Answer

Which power tool is best suited for cutting curves in wood?

A
Drill
B
Grinder
C
Jigsaw
D
Impact wrench

Question 3Single Answer

What is the function of a torque wrench?

A
Cutting threads
B
Applying a specific torque to a fastener
C
Drilling holes
D
Sanding surfaces

Question 4Single Answer

Which tool is used to remove material from a workpiece by abrasion?

A
File
B
Hammer
C
Pliers
D
Screwdriver

Question 5Single Answer

What is the purpose of a center punch?

A
To tighten screws
B
To mark a spot for drilling
C
To cut metal sheets
D
To measure depth

Question 6Single Answer

Which power tool is commonly used for grinding and sharpening?

A
Angle grinder
B
Circular saw
C
Drill
D
Router

Question 7Single Answer

What is the main use of a pipe wrench?

A
Cutting pipes
B
Turning and gripping pipes
C
Measuring pipe diameter
D
Bending pipes

Question 8Single Answer

Which tool is used to check the flatness of a surface?

A
Straight edge
B
Caliper
C
Protractor
D
Tap

Question 9Single Answer

What does a countersink tool do?

A
Drills holes
B
Creates a conical recess for screw heads
C
Cuts threads
D
Measures angles

Question 10Single Answer

Which power tool is ideal for driving screws quickly?

A
Impact driver
B
Jigsaw
C
Grinder
D
Router

Question 11Single Answer

What is the base unit of length in the metric system?

A
Inch
B
Meter
C
Foot
D
Yard

Question 12Single Answer

How many millimeters are in one centimeter?

A
10
B
100
C
1000
D
1

Question 13Single Answer

What unit is used to measure force in the SI system?

A
Pound
B
Newton
C
Kilogram
D
Ton

Question 14Single Answer

Which instrument is used to measure small dimensions with high precision?

A
Ruler
B
Vernier caliper
C
Tape measure
D
Protractor

Question 15Single Answer

Which unit measures pressure in the SI system?

A
Pascal
B
Bar
C
PSI
D
Torr

Question 16Single Answer

What does a micrometer measure?

A
Angles
B
Small distances
C
Volume
D
Weight

Question 17Single Answer

How many feet are in a yard?

Question 18Single Answer

What is the SI unit for temperature?

A
Celsius
B
Fahrenheit
C
Kelvin
D
Rankine

Question 19Single Answer

Which tool measures angles with precision?

A
Ruler
B
Protractor
C
Caliper
D
Micrometer

Question 20Single Answer

What is the primary function of a bolt?

A
Cutting metal
B
Joining parts with a nut
C
Measuring length
D
Welding joints

Question 21Single Answer

Which fastener is self-tapping?

A
Bolt
B
Nut
C
Screw
D
Rivet

Question 22Single Answer

What is the purpose of a washer?

A
To cut threads
B
To distribute load and prevent loosening
C
To drill holes
D
To measure torque

Question 23Single Answer

Which fastener is permanent?

A
Screw
B
Bolt
C
Rivet
D
Nut

Question 24Single Answer

What type of nut prevents loosening due to vibration?

A
Wing nut
B
Lock nut
C
Hex nut
D
Cap nut

Question 25Single Answer

Which fastener is used to join sheet metal?

A
Bolt
B
Screw
C
Rivet
D
Pin

Question 26Single Answer

What is the function of a cotter pin?

A
To cut metal
B
To secure a nut or bolt
C
To measure angles
D
To weld joints

Question 27Single Answer

Which fastener has a slotted head?

A
Hex bolt
B
Phillips screw
C
Slotted screw
D
Torx screw

Question 28Single Answer

What is the purpose of a set screw?

A
To join two plates
B
To secure an object without a nut
C
To cut threads
D
To measure depth

Question 29Single Answer

Which fastener is used in high-strength applications?

A
Wood screw
B
Machine bolt
C
Rivet
D
Nail

Question 30Single Answer

What is the primary use of a hacksaw?

A
Cutting wood
B
Drilling holes
C
Cutting metal
D
Grinding surfaces

General Knowledge

Question 31Single Answer

Which Windows interface element typically appears to display information, a warning, an error message, or a request for confirmation?

A
Window
B
Pop-up menu
C
Message box
D
Taskbar

Question 32Single Answer

What is active desktop ?

A
a term that is synonymous with viewing your desktop as web page
B
a feature to customize your desktop to display informating you can update from the internet
C
both a and b above mentioned
D
A software
E
None of these

Question 33Single Answer

What is meant by an active window?

A
A window that is minimized
B
The window currently receiving user input
C
Any window currently open
D
The window opened first

Question 34Single Answer

What was America Online (AOL) primarily known for during the early popularization of consumer Internet access?

A
An online service providing Internet access and proprietary online content
B
A computer operating system
C
A spreadsheet application
D
A database management system

Question 35Single Answer

An application is

A
word processing, accounting and engineering programs are example of application programs
B
computer program designed to enable users to perform specific job functions
C
Both a and b above mentioned
D
a document
E
None of these

Question 36Single Answer

Yojna a weekly journal

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 37Single Answer

Kurukshetra a journal on rural development is published by

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 38Single Answer

Devaluation of a currency means

A
Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
B
Reduction in the value of a currency vis-à-vis major internationally traded currencies
C
Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
D
Permitting the currency to seek its worth in the international market

Question 39Single Answer

In India rural incomes are generally lower than the urban incomes, which of the following reasons account for this
1. a large number of farmers are illiterate and know little about scientific agriculture
2. prices of primary products are lower than those of manufactured products
3. Investments in agriculture has been low when compared to investment in industry

A
1 and 3
B
2 and 3
C
1 and 2
D
1,2 and 3

Question 40Single Answer

Which of the following programmes aims at the promotion of savings among rural women

A
Rashtriya Mahila Kosh
B
Indira Mahila Yojna
C
Jawahar Rozgar Yojna
D
Mahila Samridhi Yojna

Question 41Single Answer

What is Net National Product

A
the money value of final goods and services produced annually in the economy
B
the money value of annual service generation in the economy
C
the money value of tangible goods produced annually in the economy
D
The money value of tangible goods available in the economy

Question 42Single Answer

National income is the

A
net national product at market price
B
net national product at factor cost
C
net domestic product at market price
D
net domestic product at factor cost

Question 43Single Answer

Chelliah Committee of 1992 deals with the overhauling of our

A
financial system
B
tax system
C
patents and copyrights
D
Public sector undertakings

Question 44Single Answer

During which Five Year Plan was the annual growth rate of National Income the lowest

A
2^nd plan
B
3^rd plan
C
5^th plan
D
6^th plan

Question 45Single Answer

Which of the following taxes is a progressive tax

A
sales tax
B
custom tax
C
excise tax
D
income tax

Question 46Single Answer

In ruby laser, the stimulated emission is due to transition from

A
metastable state to any lower state
B
any higher state of lower state
C
metastable state to ground state
D
any higher state to ground state

Question 47Single Answer

A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is

A
uniform throughout the pipe not zero
B
zero only along the axis of the pipe
C
zero at any point inside the pipe
D
maximum at the centre and minimum at the edge

Question 48Single Answer

convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is

A
0.45 m
B
0.15 m
C
0.30 m
D
0.6 m

Question 49Single Answer

Two sources are said to be coherent if they produce waves

A
having a constant phase difference
B
of equal wavelength
C
of equal speed
D
having same shape of wavefront

Question 50Single Answer

Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -

A
0.75 A
B
1 A
C
2 A
D
1.5 A

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General Knowledge

Question 51Single Answer

10^-6 M NaOH is diluted 100 times. The pH of the diluted base is

A
between 7 and 8
B
between 5 and 6
C
between 6 and 7
D
between 10 and 11

Question 52Single Answer

In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is

A
1.93 A
B
9.65 A
C
19.3 A
D
0.965 A

Question 53Single Answer

The one which decreases with dilution is

A
molar conductance
B
conductance
C
specific conductance
D
equivalent conductance

Question 54Single Answer

Vapour pressure of pure ‘A’ is 70 mm of Hg at 25^oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25^oC, the vapour pressure of pure ‘B’ at 25^oC is

A
28 mm
B
56 mm
C
70 mm
D
140 mm

Question 55Single Answer

A 6% solution of urea is isotonic with

A
1 M solution of glucose
B
0.05 M solution of glucose
C
6% solution of glucose
D
25% solution of glucose

Question 56Single Answer

Plant viruses usually contain :

A
RNA
B
DNA
C
DNA and RNA
D
DNA or RNA

Question 57Single Answer

Viruses were discovered by :

A
Stanley
B
Ivanowski
C
Twort
D
Herelle

Question 58Single Answer

Which statement best defines viruses?

A
Acellular infectious agents that replicate only inside living host cells
B
Cellular microorganisms containing only DNA
C
Free-living microorganisms capable of independent metabolism
D
Cellular microorganisms containing only RNA

Question 59Single Answer

Which infectious agents consist essentially of small, naked RNA molecules without a protein coat?

A
Virions
B
Prions
C
Viroids
D
Bacteriophages

Question 60Single Answer

Coliphage f X 174 contains :

A
double stranded RNA
B
single stranded DNA
C
double stranded DNA
D
single stranded RNA

Question 61Single Answer

What generally happens to contractile-vacuole activity when a freshwater Amoeba is transferred to a sufficiently hypertonic saline solution?

A
It increases rapidly
B
It remains unchanged
C
It decreases markedly or may cease
D
The vacuole divides repeatedly

Question 62Single Answer

What is the median adhesive pad located between the two terminal claws of a cockroach leg called?

A
Unguis
B
Arolium
C
Tibial spur
D
Cercus

Question 63Single Answer

The binomial system of Carolus Linnaeus was devoid of which of the following categories ?

A
Genus and species
B
Class and order
C
Phylum and family
D
Kingdom and class

Question 64Single Answer

The mouthparts of a cockroach are adapted primarily for which mode of feeding?

A
Biting and chewing
B
Piercing and sucking
C
Siphoning
D
Sponging

Question 65Single Answer

Which mosquito is the biological vector responsible for natural transmission of human malaria?

A
Male Culex
B
Female Culex
C
Female Aedes
D
Female Anopheles

Question 66Single Answer

"Who said, 'India was a parrot unto itself'?

A
Malik Muhammad Joyce
B
Raskhan
C
Rich Khusrow
D
Rich Hasan

Question 67Single Answer

What was the real name of Amir Khusro?

A
Muhammad Hasan
B
Muhammad Hussain
C
Muhammad Khusrow
D
Muhammad Mine

Question 68Single Answer

Who is considered the founder of the Sufi movement in India?

A
Qutubuddin Bakhtiar Aunty
B
Nizamuddin Awliya
C
muinuddin Chishti
D
Naseeruddin Mahmud

Question 69Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 70Single Answer

What is the national game of the United States of America ?

A
water polo
B
Rugby
C
Polo
D
baseball

Question 71Single Answer

What is considered the national game of India ?

A
Field hockey
B
cricket
C
Chess
D
Kabaddi

Question 72Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 73Single Answer

Who was the Chairman of the Drafting Committee of the Indian Constitution?

A
Dr. Rajendra Prasad
B
Dr. B.R. Ambedkar
C
Jawaharlal Nehru
D
Sardar Vallabhbhai Patel

Question 74Single Answer

The idea of the Constituent Assembly was first put forward by:

A
Mahatma Gandhi
B
M.N. Roy
C
Jawaharlal Nehru
D
Sardar Vallabhbhai Patel

Question 75Single Answer

What is the lithosphere composed of ?

A
Water and gases
B
Rocks and minerals
C
Living organisms
D
Air and gases

Question 76Single Answer

The lithosphere includes :

A
Only the Earth's crust
B
The Earth's crust and upper mantle
C
Only the Earth's mantle
D
The Earth's crust, mantle, and core

Question 77Single Answer

The process of soil formation is called :

A
Erosion
B
Weathering
C
Deposition
D
Lithification

Question 78Single Answer

The Indian Navy recently received its second indigenous Diving Support Vessel (DSV). What is its name?

A
Nistar
B
Nipun
C
INS Vikrant
D
INS Arihant

Question 79Single Answer

The Public Examinations (Prevention of Unfair Means) Amendment Bill, 2026, was passed by the Rajya Sabha on which date?

A
27 July 2026
B
29 July 2026
C
31 July 2026
D
30 July 2026

Question 80Single Answer

Who won the silver medal in the men’s javelin throw at the Commonwealth Games 2026 held in Glasgow?

A
Yash Vir Singh
B
Neeraj Chopra
C
Kishore Jena
D
Rohit Yadav

Numerical & Reasoning Ability

Question 81Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 82Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 83Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 84Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 85Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 86Single Answer

How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?

A
None
B
One
C
Two
D
Three
E
More than three

Question 87Single Answer

If it is possible to make only one meaningful word with the first, the second, the seventh and the eighth letters of the word TEMPORAL, which of the following will be the first letter of that word? If more than one such word can be made, give ‘Y’ as the answer and if no such word can be made, give ‘X’ as the answer.

Question 88Single Answer

If the letters of the word HANDOVER are arranged alphabetically from left to right how many letters will remain at the same position?

A
None
B
One
C
Two
D
Three
E
More than three

Question 89Single Answer

How many such pairs of letters are there in the word EXCURSION, each of which has as many letters between them in the word as they have in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 90Single Answer

If it is possible to make only one meaningful word with the first, the second, the third, the sixth and the eighth letters of the word DEVIATION first letter of that word is your answer? If more than one such word can be made formed your answer is ‘A’ and if no such word can be formed your answer is ‘B’.

Question 91Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 92Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 93Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 94Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 95Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 96Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 97Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 98Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 99Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 100Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

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Latest NMDC Maintenance Assistant Mechanical Exam Question (Objective Questions), MCQ in English

Mechanical

General Knowledge

NMDC Maintenance Assistant Mechanical Exam Online Question Bank Package

General Knowledge

Numerical & Reasoning Ability

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