Question for CSBC Bihar Police Constable (Operator) 2026 - Quiz / Questions / MCQ

Objective Questions

Latest CSBC Bihar Police Constable Operator Exam Question (Objective Questions), MCQ in English

Subjects : General Knowledge & Current Affairs, Physics, Chemistry, Maths

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General Knowledge & Current Affairs

Question 1Single Answer

Yojna a weekly journal

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

Question 2Single 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 3Single 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 4Single 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 5Single 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 6Single 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 7Single 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 8Single Answer

Who was the real founder of Turk rule in Bihar ?

A
Ibn Bakhtiyar Khilji
B
Ibrahim
C
Dariya Khan Noohani
D
Malik Husamuddin
E
None of the above / More than one of the above

Question 9Single Answer

Who was the first Indian Governor of Bihar ?

A
Dr. Shri krishna Singh
B
Brij Kishor Prasad
C
B.P. Mandal
D
Satyendra Prasanna Sinha
E
None of the above/More than one of the above

Question 10Single Answer

In which year the Chauri Revolt of Bihar took place ?

A
1842
B
1798
C
1784
D
1832
E
None of the above / More than one of the above

Question 11Single Answer

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

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

Question 12Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 13Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 14Single 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 15Single Answer

Who is known as the "Missile Man of India"?

A
Dr. Homi J. Bhabha
B
Dr. Vikram Sarabhai
C
Dr. APJ Abdul Kalam
D
Dr. Satish Dhawan

Question 16Single Answer

What astronomical discovery was announced by astronomers in March 2026?

A
New planet in solar system
B
Discovery related to 1,900 light-years away (specific object)
C
Black hole merger
D
Exoplanet with life signs

Question 17Single Answer

On what date in March 2026 did Prime Minister Narendra Modi become India’s longest-serving head of government?

A
15 March
B
20 March
C
22 March
D
25 March

Question 18Single Answer

What major infrastructure project was inaugurated by PM Narendra Modi on 28 March 2026?

A
Mumbai Trans Harbour Link
B
Atal Tunnel
C
Noida International Airport
D
Chenab Bridge

Question 19Single Answer

What was the status of India-US trade relations highlighted in early 2026 leading into March developments?

A
Increased tariffs
B
Breakthrough deal reducing US tariffs on Indian goods to 18%
C
Complete trade halt
D
New sanctions

Question 20Single Answer

What was the fiscal deficit target set for FY 2026-27 in the Union Budget 2026-27 presented by FM Nirmala Sitharaman?

A
4.0% of GDP
B
5.0% of GDP
C
4.5% of GDP
D
4.3% of GDP

Question 21Single Answer

What was the total expenditure estimated in the Union Budget 2026-27?

A
₹49.6 lakh crore
B
₹53.5 lakh crore
C
₹55 lakh crore
D
₹60 lakh crore

Question 22Single Answer

What defence-related development was noted in the context of India’s preparedness amid global tensions in March 2026?

A
Reduction in capex
B
Withdrawal from international exercises
C
Complete self-reliance achieved
D
Surge in defence budget and modernisation push

Question 23Single Answer

What significant diplomatic agreement was announced between India and Canada in early March 2026?

A
Defence pact
B
Free Trade Agreement
C
Strengthened economic partnership
D
Climate alliance

Question 24Single Answer

Which airport or port received a critical LPG shipment (Pyxis Pioneer) in March 2026 amid West Asia tensions?

A
Mundra Port
B
Paradip Port
C
New Mangalore Port
D
Kandla Port

Question 25Single Answer

What major international sporting hosting rights did India receive in March 2026?

A
2028 World Athletics Indoor Championships
B
2028 Olympics
C
2030 Asian Games
D
2027 Cricket World Cup

Physics

Question 26Single 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 27Single 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 28Single 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 29Single 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 30Single 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 31Single Answer

In a common emitter amplifier the input signal is applied across

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

Question 32Single 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 33Single 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 34Single 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 35Single 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

Question 36Single Answer

Temperature can be expressed as derived quantity in terms of

A
length and mass
B
mass and time
C
length, mass and time
D
None of these

Question 37Single Answer

Electron volt is a unit of

A
potential difference
B
charge
C
energy
D
capacity

Question 38Single Answer

Dimensions of impulse are

A
[MLT ^–1]
B
[MLT²]
C
[MT^–2]
D
[ML^–1T^–3]

Question 39Single Answer

Potential is measured in

A
joule/coulomb
B
watt/coulomb
C
newton–second
D
None of these

Question 40Single Answer

One Nanometer is equal to

A
10^–9m
B
10^–6m
C
10^–10m
D
10^–3m

Question 41Single Answer

Maxwell is the unit of

A
magnetic susceptibility
B
intensity of Magnetisation
C
magnetic Flux
D
magnetic Permeability

Question 42Single Answer

Which of the following is derived physical quantity ?

A
Mass
B
Velocity
C
Length
D
Time

Question 43Single Answer

What are the units of magnetic permeability ?

A
Wb A^–1 m^–1
B
Wb^–1 Am
C
Wb A m^–1
D
Wb A^–1 m

Question 44Single Answer

The dimensions of pressure gradient are

A
[ML^–2 T^–2]
B
[ML^–2 T^–1]
C
[ML^–1 T^–1]
D
[ML^–1 T^–2]

Question 45Single Answer

The dimensions of Rydberg's constant are

A
[M⁰L^–1T]
B
[MLT^–1]
C
[M⁰L^–1T⁰]
D
[ML⁰T²]

Question 46Single Answer

'Farad' is the unit of

A
resistance
B
conductance
C
capacitance
D
inductance

Question 47Single Answer

S.I. unit of surface tension is

A
degree/cm
B
N/m
C
N/m²
D
Nm

Question 48Single Answer

Which one of the following pairs does not have the same dimension ?

A
Potential energy and Kinetic energy
B
Density and specific gravity
C
Focal length and height
D
Gravitational force and frictional force

Question 49Single Answer

Which one of the following physical quantity has the same unit as that of pressure ?

A
Angular momentum
B
Stress
C
Strain
D
Work

Question 50Single Answer

The symbol of SI unit of inductance is H. It stands for

A
Holm
B
Halogen
C
Henry
D
Hertz

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Chemistry

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

Which of the following is not a synthetic fibre:

A
Anygora
B
Rayon
C
Nylon
D
Polyster

Question 62Single Answer

Which one of the following is not contained in Portland cement ?

A
Ca₃Al₂O₆
B
Ca₃SiO₅
C
Ca₂SiO₄
D
Ca₃(PO₄)₂

Question 63Single Answer

What is the reson for white cement to be white ?

A
It does not contain carbon
B
It does not contain silicon
C
It does not contain iron
D
It does not contain calcium

Question 64Single Answer

Which fertilizer is assimilated directly by the plant ?

A
Super phosphate
B
Nitrolim
C
Muriate of Potash
D
Humus

Question 65Single Answer

Which of the following chemicals is used in foam fire extinguishers ?

A
Aluminium sulphate
B
Copper sulphate
C
Cobalt sulphate
D
Nickel sulphate

Question 66Single Answer

What is a mixture of potassium nitrate, powdered charcoal and sulphur called ?

A
Glass
B
Cement
C
paint
D
Gun powder

Question 67Single Answer

Which one of the following chemicals is used in beauty parlours for hair – setting ?

A
Sulphur based
B
Phosphorus based
C
Silicon based
D
Iron based

Question 68Single Answer

Which one of the following is used as a mordant in dyeing and tanning industry ?

A
Magnesium oxide
B
Magnesium carbonate
C
Magnesium chloride
D
Magnesium sulphate

Question 69Single Answer

Which one of the following substances is used in the manufacture of safety matches ?

A
Red phosphorus
B
White phosphorus
C
Phosphorus trioxide (P₂O₃)
D
Black phosphorus

Question 70Single Answer

Which one of the following polymeric materials is used for making bullet proof jacket ?

A
Nylon –6, 6
B
Rayon
C
Kevlar
D
Dacron

Question 71Single Answer

Which one of the following is another name of RDX

A
Cyanohydrin
B
Dextran
C
Cyclohexane
D
Cyclonite

Question 72Single Answer

Which one of the following is used as an explosive ?

A
Phosphorus trichloride
B
Mercuric oxide
C
Graphite
D
Nitroglycerine

Question 73Single Answer

Flint glass is obtained from which of the following ?

A
Zinc and barium borosilicate
B
Sand, red lead and potassium carbonate
C
Sodium aluminium borosilicate
D
Pure silica and zinc oxide

Question 74Single Answer

Which one of the following correctly defines the state of glass ?

A
Crystalline solid
B
Super cooled liquid
C
Condensed gas
D
Liquid crystal

Question 75Single Answer

Which one of the following is not used as fertilizer ?

A
Ammonium nitrate
B
Ammonium sulphide
C
Ammonium phosphate
D
Ammonium sulphate

Maths

Question 76Single 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 77Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 78Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 79Single 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 80Single Answer

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

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 81Single Answer

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

Question 82Single Answer

Convert 0.6 into fraction ?

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

Question 83Single 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 84Single 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 85Single Answer

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

A
93
B
103
C
60.5
D
121

Question 86Single Answer

Which is greater ?

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

Question 87Single Answer

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

Question 88Single Answer

Write the 44000 in Roman numerals

A
XLI
B
XLVI
C
XLIV
D
XLVIC

Question 89Single Answer

Convert 0.0909… into fraction ?

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

Question 90Single Answer

What is (98 times 102) ?

A
9996
B
10000
C
10096
D
10196

Question 91Single Answer

Which is smaller ?

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

Question 92Single Answer

Convert 0.5777… into fraction ?

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

Question 93Single Answer

Convert 0.81 into fraction ?

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

Question 94Single Answer

(63)² – (12)² =?

A
3528
B
3852
C
3582
D
3825

Question 95Single Answer

Which is greater ?

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

Question 96Single Answer

16.928 + 24.7582

5.015 =?

A
20
B
24
C
22
D
26

Question 97Single Answer

Convert 0.75 into fraction ?

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

Question 98Single Answer

Which is greater ?

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

Question 99Single Answer

Two numbers are co-prime if their HCF is ?

A
0
B
1
C
Same
D
Prime

Question 100Single Answer

Product of all factors of 10 is ?

A
10
B
100
C
1000
D
10000

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Latest CSBC Bihar Police Constable Operator Exam Question (Objective Questions), MCQ in English

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Physics

CSBC Bihar Police Constable Operator Exam Online Question Bank Package

Chemistry

Maths

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