Question for Ordnance Factory Group C 2026 - Quiz / Questions / MCQ

Objective Questions

Latest OFB Group C Exam Question (Objective Questions), MCQ in English

Subjects : Numerical Aptitude, General Science, General Awareness

Question Bank OFB Labour Group C Exam - English

Numerical Aptitude

Question 1Single 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 2Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 3Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 4Single 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 5Single Answer

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

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 6Single Answer

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

Question 7Single Answer

Convert 0.6 into fraction ?

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

Question 8Single 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 9Single 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 10Single Answer

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

A
93
B
103
C
60.5
D
121

Question 11Single Answer

Which is greater ?

A
15/16
B
17/18
C
Equal
D
Cannot compare

Question 12Single Answer

If sum of two numbers is 42 and their product is 437, then find their difference.

Question 13Single Answer

Write the 44000 in Roman numerals

A
XLI
B
XLVI
C
XLIV
D
XLVIC

Question 14Single Answer

Convert 0.0909… into fraction ?

A
1/11
B
9/11
C
1/9
D
9/10

Question 15Single Answer

What is (98 times 102) ?

A
9996
B
10000
C
10096
D
10196

Question 16Single Answer

Which is smaller ?

A
9/11
B
7/9
C
Equal
D
Cannot compare

Question 17Single Answer

Convert 0.5777… into fraction ?

A
26/45
B
52/90
C
13/22
D
5/9

Question 18Single Answer

Convert 0.81 into fraction ?

A
81/100
B
9/10
C
8/9
D
9/11

Question 19Single Answer

(63)² – (12)² =?

A
3528
B
3852
C
3582
D
3825

Question 20Single Answer

Which is greater ?

A
13/17
B
11/14
C
Equal
D
Cannot compare

Question 21Single Answer

16.928 + 24.7582

5.015 =?

A
20
B
24
C
22
D
26

Question 22Single Answer

Convert 0.75 into fraction ?

A
3/4
B
2/3
C
4/5
D
5/8

Question 23Single Answer

Which is greater ?

A
11/13
B
12/15
C
Equal
D
Cannot compare

Question 24Single Answer

Two numbers are co-prime if their HCF is ?

A
0
B
1
C
Same
D
Prime

Question 25Single Answer

Product of all factors of 10 is ?

A
10
B
100
C
1000
D
10000

Question 26Single Answer

How many real numbers exist between 2 and 3 ?

A
1
B
10
C
Infinite
D
None

Question 27Single Answer

Which number is divisible by 11 ?

A
12345
B
1331
C
1234
D
1213

Question 28Single Answer

What is the unit digit of (7^{245}) ?

Question 29Single Answer

What is (64^{^}{2/3}) ?

A
4
B
8
C
16
D
32

Question 30Single Answer

What is (125^{^}{1/3}) ?

Question 31Single Answer

Which of the following is composite ?

A
17
B
19
C
21
D
23

Question 32Single Answer

What is √0.0009 ?

A
0.003
B
0.03
C
0.3
D
0.09

Question 33Single Answer

What is √1156 ?

A
32
B
34
C
36
D
38

Question 34Single Answer

What is √2025 ?

A
35
B
40
C
45
D
50

Question 35Single Answer

What is (51^{^}2) ?

A
2601
B
2501
C
2551
D
2651

Question 36Single Answer

7 8 18 57 ?

A
244
B
174
C
186
D
none of these

Question 37Single Answer

Last year my age was a perfect square number. Next year it will be a cubic number. What is my Present age ?

A
25 years
B
27 years
C
26 years
D
24 years

Question 38Single Answer

If a + b = 5, a²+ b² = 13, the value of a – b (where a > b) is

A
2
B
-1
C
1
D
-2

Question 39Single Answer

How many factors does 100 have ?

Question 40Single Answer

If x = a – b, y = b – c, z = c – a, then the numerical value of the algebraic expression x³ + y³ + z³ – 3xyz will be

A
a + b + c
B
Zero
C
4 (a + b + c)
D
3 abc

General Science

Question 41Single 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 42Single 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 43Single 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 44Single 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 45Single 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

Question 46Single Answer

In a common emitter amplifier the input signal is applied across

A
anywhere
B
emitter-collector
C
collector-base
D
base-emitter

Question 47Single Answer

Adding detergents to water helps in removing dirty greasy stains. This is because
1. It increases greasy stains. This is because
2. It decreases the oil-water surface tension
3. It increases the viscosity of the solution
4. Dirt is held suspended surrounded by detergent molecules

A
2 and 4
B
1 only
C
3 and 4
D
4 only

Question 48Single Answer

Choose the correct statement (a) for a cricket ball that is spinning clockwise through air
S1 : Statemlines of air are symmetric around the ball.
S2 : The velocity of air above the ball relative to it is larger than that below the ball.
S3 : The velocity of air above the ball relative to it is smaller than that below the ball.
S4 : There is a net upward force on the ball.

A
S1,S2 and S4
B
S2 and S4
C
S4 only
D
S3 only

Question 49Single Answer

Ferromagnetic materials used in a transformer must have

A
low permeability and high hysterisis loss
B
high permeability and low hysterisis loss
C
high permeability and high hysterisis loss
D
low permeability and low hysterisis loss

Question 50Single Answer

According to Newton’s corpuscular theory, the speed of light is

A
same in all the medium
B
lesser in rarer medium
C
lesser in denser medium
D
independent of the medium

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General Science

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

In countries nearer to polar region, the roads are sprinkled with CaCl₂. This is

A
to minimise the wear and tear of the roads
B
to minimise the snow fall
C
to minimise pollution
D
to minimise the accumulation of dust on the road

Question 57Single Answer

A compound of ‘A’ and ‘B’ crystallises in a cubic lattice in which ‘A’ atoms occupy the lattice points at the corners of the cube. The ‘B’ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is

A
AB₂
B
A₂B
C
AB
D
AB₃

Question 58Single Answer

In electrophilic aromatic substitution reaction, the nitro group is meta directing because it

A
decreases electron density at ortho and para positions
B
decreases electron density at meta position
C
increases electron density at meta position
D
increases electron density at ortho and para position

Question 59Single Answer

The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with

A
PCI₅
B
PCI₃
C
SOCl₂ in presence of pyridine
D
dry HCl in the presence of anhydrous ZnCl₂

Question 60Single Answer

The carbon bond length in benzene is

A
in between C₂H₆ and C₂H₄
B
same as in C₂H₄
C
in between C₂H₆ and C₂H₂
D
in between C₂H₄ and C₂H₂

Question 61Single Answer

The respiratory quotient during cellular respiration would depend on

A
the nature of enzymes involved
B
the nature of the substrate
C
the amount of carbon dioxide released
D
the amount of oxygen utilised

Question 62Single Answer

Which of the following is not a green - house gas ?

A
Water vapour
B
Carbon monoxide
C
Methane
D
Oxygen

Question 63Single Answer

Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is

A
50%
B
75%
C
0%
D
25%

Question 64Single Answer

An animal, which has both exoskeleton and endoskeleton structures is a

A
fresh-water mussel
B
tortoise
C
frog
D
jelly fish

Question 65Single Answer

Identify the group, which includes animals all of which give birth to young ones directly?

A
Dolphin, kangaroo, bat, cat
B
Platypus, penguin, bat, hippopotamus
C
shrew, bat, kiwi, car
D
Lion, whale, ostrich, bat

Question 66Single Answer

Compare the statement A and B.
Statement A Blood sugar level falls rapidly after hepatectomy.
Statement B The glycogen of the liver is the principal source of blood sugar.
Select the correct description.

A
Both the statements A and B are correct and B is the reason for A
B
Statement A is correct and B is wrong
C
Statement A is wrong and B is correct
D
Both the statements A and B are correct and B is not the reason for A

Question 67Single Answer

What is/are true about heart wood?
(A) It does not help in water conduction.
(B) It is also called laburnum.
(C) It is dark in colour but very soft.
(D) It has tracheary elements which are filled with tannin, resin, etc.

A
B,C and D
B
A and D
C
B and D
D
A, B and C

Question 68Single Answer

Compare the statements A and B.
Statement A Auxins promote apical dominance by suppressing the activity of lateral buds.
Statement B In moriculature, periodic pruning of shoot tips is done to make mulberry plants bushy.
Select the correct description.

A
Both the statements A and B are correct and A is the reason for B
B
Statement A is correct and B is wrong
C
Statement A is wrong and B is correct
D
Both the statements A and B are correct and A is not the reason for B

Question 69Single Answer

Bryophytes resemble algae is the following aspects

A
Filamentous body, presence of vascular tissues and autotrophic nutrition
B
Differentiation of plant body into root, stem and leaves and autotrophic nutrition
C
Thallus like plant body, presence of roots and autotrophic nutrition
D
Thallus like plant body, lack of vascular tissues and autotrophic nutrition

Question 70Single Answer

Stoma opens, when

A
guard cells swell due to an increase in their water potential
B
guard cells swell by endosmosis duie to influx of hydrogen ions (protons)
C
guard cells swell by endosmosis due to efflux of potassium ions
D
guard cell swell due to a decrease in their water potential

General Awareness

Question 71Single Answer

Yojna a weekly journal

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

Question 72Single 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 73Single 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 74Single 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 75Single 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 76Single 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 77Single 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 78Single 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 79Single 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 80Single Answer

Which of the following taxes is a progressive tax

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

Question 81Single Answer

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

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

Question 82Single Answer

What was the real name of Amir Khusro?

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

Question 83Single 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 84Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 85Single Answer

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

A
water polo
B
Rugby
C
Polo
D
baseball

Question 86Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 87Single 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 88Single 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 89Single Answer

Who is known as the "Father of the Indian Renaissance" ?

A
Raja Ram Mohan Roy
B
Swami Vivekananda
C
Rabindranath Tagore
D
Mahatma Gandhi

Question 90Single Answer

Which classical dance form is associated with Tamil Nadu ?

A
Kathak
B
Kuchipudi
C
Bharatanatyam
D
Odissi

Question 91Single Answer

Who became the longest-serving continuous Finance Minister of India and presented her ninth straight Union Budget on February 1, 2026?

A
Nirmala Sitharaman
B
Arun Jaitley
C
Pranab Mukherjee
D
P. Chidambaram

Question 92Single Answer

How many Ramsar sites does India now have after adding two new ones (in Uttar Pradesh and Gujarat) in early February 2026?

A
98
B
97
C
96
D
100

Question 93Single Answer

In which rank did India stand in the Global Soft Power Index 2026, as reported around February 2026?

A
25th
B
32nd
C
28th
D
35th

Question 94Single Answer

What did the Supreme Court of India declare as a fundamental right in schools around February 2026?

A
Free education up to class 12
B
Sports infrastructure
C
Digital literacy programs
D
Menstrual health facilities

Question 95Single Answer

Which organization plans to launch India's first-ever National Household Income Survey (NHIS) and Annual Survey of Incorporated Service Sector Enterprises (ASISSE) starting April 2026?

A
RBI
B
SEBI
C
NITI Aayog
D
NSO (National Statistical Office)

Question 96Single Answer

Where was India's first-ever LNG-diesel dual-fuel DEMU train launched in early 2026?

A
Delhi
B
Mumbai
C
Ahmedabad
D
Chennai

Question 97Single Answer

Which country's first indigenous submarine was highlighted in news around February 2026?

A
India
B
Taiwan
C
South Korea
D
Japan

Question 98Single Answer

What rare natural phenomenon was observed in Ladakh around early February 2026?

A
Solar eclipse
B
Volcanic eruption
C
Meteor shower
D
Red aurora

Question 99Single Answer

Who became Maharashtra's first woman Deputy Chief Minister around February 2026?

A
Supriya Sule
B
Oormila Matondkar
C
Pankaja Munde
D
Sunetra Pawar

Question 100Single Answer

Which city hosted the 6th National Crop Nutrition Summit on February 5-6, 2026?

A
Delhi
B
Mumbai
C
Hyderabad
D
Bengaluru

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Latest OFB Group C Exam Question (Objective Questions), MCQ in English

Numerical Aptitude

General Science

OFB Group C Exam Online Question Bank Package

General Science

General Awareness

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