ASI Past Papers SPSC Solved MCQs 2020 -2024

ASI past papers SPSC solved mcqs for assistant sub inspector of police test preparation online.

ASI Past Papers SPSC Solved MCQs

Which country is called the Land of Thunder Dragon?

A. Nepal
B. Sri Lanka
C. Bhutan
D. Bangladesh
E. Afghanistan

Which poet got Lenin prize in 1962?

  1. Faiz Ahamad Faiz
  2. Ahmad Faraz
  3. Wasif Ali Wasif
  4. Jaun Elia
  5. None of these

The first constitution of Pakistan was enforced in the year:

  1. 1951
  2. 1956
  3. 1962
  4. 1973

Hayate-e-Javed is written by Altaf Hussain Hali about:

  1. Agha Khan
  2. Muhammad Ali Jinnah
  3. Allama Iqbal
  4. Sir Sayyid Ahmad Khan
  5. Liaqat Ali Khan

Everyone should be _____ duties and assignments according to his abilities.

  1. Told
  2. Suggested
  3. Advised
  4. Delegated
  5. All of these

The boundary line between India and Pakistan demarcated by Sir Cyril Radcliffe is called:

  1. Durand Line
  2. Line of Actual Control
  3. Radcliffe Line
  4. None of the above

Hanna lake is located in ___ :

  1. Karachi
  2. Dadu
  3. Quetta
  4. Peshawar

What is the correct plural form of ‘analysis’?

  1. Analysis
  2. Analyses
  3. Analayses
  4. All are wrong

Daughter of East was written by___?

  1. Fatima Jinnah
  2. Benazir Bhutto
  3. Ghanwa Bhutto
  4. Begum Raina Liaqat Ali Khan
  5. None of these

smog is the cause of?

  1. Acid rain
  2. air pollution
  3. Ozone layer thinning
  4. None of these
The concept of acting in aid of civil power by the armed forces has been laid down in the Constitution of Pakistan 1973 ____?
  1. Article 246
  2. Article 247
  3. Article 245
  4. None
according to some scientists how many galaxies are there in the universe?
  1. 10 Billion Galaxies
  2. 100 Billion Galaxies
  3. 1000 Billion Galaxies
  4. 10000 Billion Galaxies
Which organism is known as the powerhouse of the cell?
  1. Organ powerhouse
  2. Cell membrane
  3. Cytoplasm
  4. Mitochondria
What is the correct plural form of ‘Child’?
  1. Childs
  2. Childies
  3. Chilredn
  4. Children
  5. Childrens
Angel Falls is the world’s tallest waterfalls, located in which country?
  1. Canada
  2. Russia
  3. Venezuela
  4. Mexico
  5. Brazil
The largest Island of the world is :
  1. Iceland
  2. Cyprus
  3. Greenland
  4. None of these
Arab League’s summit 2023 was held in which country?
  1. Egypt
  2. UAE
  3. Saudi Arabia
  4. Qatar
Sir Syed Khan Ahmed became chief judge in which year?
  1. 1849
  2. 1846
  3. 1848
  4. 1850
  5. None of these
What is the official language of Brazil?
  1. Spanish
  2. English
  3. Portuguese
  4. Italian
  5. None of these
Antonym of “quiescent” is___
  1. Dormant
  2. Active
  3. Weak
  4. unconcerned
What is the correct plural form of ‘criterion’?
  1. Criterions
  2. Criteria
  3. Criterias
  4. Criteriae
What is the plural of ‘Index’?
  1. Indices
  2. Indexies
  3. Indexis
  4. None of these
Make only a few rules for students that emphasize ____ behaviour.
  1. Correct
  2. Fitting
  3. Beneficial
  4. Appropriate
  5. Useful
Frederik X became king on 14th January 2024 of which country?
  1. United Kingdom
  2. Spain
  3. Japan
  4. Denmark
  5. France
How many countries are declared nuclear powers?
  1. 8
  2. 6
  3. 7
  4. 9
  5. 6
‘The Silk Roads: A New History of The World’ is written by _____?
  1. J. K. Rowling
  2. Stephen King
  3. Margaret Atwood
  4. Peter Frankopan
  5. John Grisham
Who was the First woman Governor of State Bank of Pakistan?
  1. Dr. Farzana Raja
  2. Dr. Shama Khalid
  3. Dr. Shamshad Akhter
  4. Dr. Maria Naz
  5. None of these
Anwaarul Haq Kakar has become ____ caretaker prime minister of Pakistan?
  1. Seventh
  2. Ninth
  3. Eighth
  4. Fifth
Name the country that won FIFA women’s world cup 2023?
  1. Argentina
  2. Qatar
  3. France
  4. Spain
  5. Brazil
To keep one’s temper means:
  1. To become hungry
  2. To become angry
  3. To be in good mood
  4. To become thirsty
  5. None of these
Which forests act as barriers against cyclones?
  1. Alpine forests
  2. Mangrove forests
  3. Evergreen forests
  4. Monsoon forests
  5. None of these
What play the most important role in regulating temperature and determining climate on the Earth?
  1. Mountains
  2. Oceans
  3. Deserts
  4. Forests
  5. All of these
What is the correct plural form of ‘Mouse’ (referring to computer device)?
  1. Mice
  2. Mousez
  3. Mouses
  4. Mices
The plural form of ‘Fish’ is?
  1. Fishes
  2. Fishez
  3. Fish
  4. None of these
The idiom ‘Fair field and no favor’ means:
  1. Equal disadvantage
  2. An equal chance for everyone
  3. Perfection
  4. Indifference in opinion
  5. Popularity
Which region of the Moon is known as ‘Dark side’?
  1. Equator
  2. South Pole
  3. North Pole
  4. Great Spot
  5. None of these
The shrine of Hazrat Sachal Sarmast is located in?
  1. Candiaro
  2. Sukkur
  3. Gambat
  4. Larkana
  5. Dadu
He must have _____ to stick to his diet, if he wants to lose weight.
  1. Obstinacy
  2. Decision
  3. Obligation
  4. Determination
  5. All of these
Who is called the National Poet of Sindh?
  1. Ustad Bukhari
  2. Usman Marwandi
  3. Abdul Latif Bhitai
  4. Sachal Sarmast
  5. None of these
The Thar Coalfied has huge reserves of coal. It is located in which district of Sindh?
  1. Jacobabad
  2. Thatta
  3. Jamshoro
  4. Tharparkar
  5. None of these
Select the antonym of ‘CONSOLIDATE’____?
  1. Build
  2. Destroy
  3. Expand
  4. Weaken
  5. All of these
World’s largest salt mine is “Sifto Salt Mine”. It is located in
  1. China
  2. Canada
  3. Pakistan
  4. Brazil
  5. Venezuela
Neither he nor his friends _____reading books.
  1. is
  2. are
  3. yet
  4. am
A man travels 1mile due east, 5mile due south, 2mile due east and finally 9miles due north. How far is the starting point?
  1. 3miles
  2. 5miles
  3. 4miles
  4. between 5miles and 9miles
  5. I don’t know the answer
“Push” and “pull” exerted by one object to another is known as:
  1. Momentum
  2. speed
  3. force
  4. All
will you wait ___ I return. Fill in the blank with correct conjunction .
  1. also
  2. that
  3. till
  4. for
The simple leaner equation is ?
  1. 7x
  2. x2 +10=10
  3. 7x+5y=10
  4. None
Which of following is present in bicycle?
  1. Gears
  2. Wheel
  3. Pulleys
  4. All
Using multiple pulleys we can change ___and___ of force.
  1. direction , angle
  2. Direction, amount
  3. speed ,amount
  4. None
Three main kinds of pollution are:
  1. Air,oil and land
  2. Air, water and industrial
  3. Air, water and land
  4. Water and land
The goal of managing a class room effectively is maximization of:
  1. Teaching
  2. Listening
  3. Reading
  4. Learning
A teacher should ensure at least in the first week of class to maintain class:
  1. Attendance
  2. Cooperation
  3. Suggestions
  4. Discipline
A question should be thrown first of all to:
  1. Low achievers
  2. Active participants
  3. whole class
  4. Talented students
The comparison of schools 10th class results in the last 5 years can be batter be presented through:
  1. Pie graph
  2. Bar graph
  3. Histogram
  4. Line graph
Post writing activity on writers part is:
  1. What progress a child is doing
  2. Skimming
  3. Followup
  4. Scanning
What number must be multiplied by 384 to get 28032?
  1. 37
  2. 72
  3. 12
  4. 73
What does show a green color in the map?
  1. Roads
  2. Oceans
  3. Trees
  4. None
The location of a country influences?
  1. Culture and tradition
  2. Land and agriculture
  3. People and their life
  4. None
All the activities which can help and fulfill human needs are called :
  1. Services
  2. Goods
  3. Products
  4. Material
How many months are there in a year?
  1. 2
  2. 8
  3. 9
  4. 12
How many years are there in a decade?
  1. 5
  2. 10
  3. 14
  4. 20
What is the source of exchange of information?
  1. Internet
  2. Computer
  3. Television
  4. Telephone
Visibility is reduced by?
  1. Fog
  2. Dew
  3. Rain
  4. None
A foreign currency which is kept in the central bank is known as?
  1. Reserves of foreign exchange
  2. Import reserves
  3. Export reserves
  4. Trade reserves
Potassium permanganate is used as:
  1. Fertilizer
  2. Baking soda
  3. Sugar industry
  4. Disinfectant
Sweet taste buds lie at the ____ of tongue:
  1. Tip
  2. Right side
  3. Left side
  4. Back
potassium nitrate is used as:
  1. Fertilizer
  2. Backing soda
  3. Sugar Industry
  4. None
Most of the water in the Northern part of subcontinent comes from:
  1. Lakes
  2. Sea
  3. Rivers
  4. Land
Teacher behavior ought to:
  1. Administrative
  2. Instructive
  3. Idealistic
  4. None
At primary level it is batter to teach in mother tongue because:
  1. Higher qualification is not needed in this profession
  2. They are ready to work with low salary
  3. Both
  4. None
What is called the amount of moisture in the air?
  1. Wind
  2. Air
  3. Water
  4. Humidity
Choose the correct spelling_____
  1. Pictorial
  2. Pactorial
  3. Pacorial
  4. None
From the following options which one is the component of curriculum?
  1. Design
  2. Evolution
  3. Preparation
  4. None
The Solar Year has ____ days?
  1. 355
  2. 350
  3. 365
  4. 356
We should not swim ___ a meal.
  1. in
  2. after
  3. at
  4. over
Choose the correct sentence—-
  1. I prefer an apple to a banana
  2. I prefer an apple than a banana
  3. I prefer a apple to a banana
  4. I prefer an apple to an banana
Karl Marx introduced the theory of —-:
  1. Socialism
  2. Economics
  3. Capitalism
  4. None
Choose the correct sentence:
  1. The action was either just or unjust
  2. The action was just or unjust
  3. The act was either just or unjust
  4. None
What is the most important invention of 20th century?
  1. Radio
  2. Internet
  3. Computer
  4. Mobile
Which area of Earth receives more amount of light?
  1. North pole
  2. South pole
  3. Hemisphere
  4. Equator
‘ ___’ is essential part of application and letter.
  1. Yours obediently
  2. Yours Obediently
  3. Your’s Obediently
  4. None
ما انا بقاری کس کے جواب ميں کھا گيا؟
  1. علم کے
  2. اقرا کے
  3. يسن کے
  4. طہ کے
اطھور الشطر ايمان ميں شطر کا کيا مطلب ھے؟
  1. طھارت
  2. پاکيزگی
  3. بڑا ھصہ
  4. شرط
الصلوت عماد الدين ميں کس چيز کی اھميت بيان کی گی ھے؟
  1. قرآن کی
  2. نماز کی
  3. ھديث کی
  4. روزہ کی
Which color is used to show the trees and forest in the map?
  1. Black
  2. Blue
  3. Green
  4. White
In which year smart card issued in Pakistan ?
  1. 2010
  2. 2012
  3. 2013
  4. 2014
North pole repels the ___ pole:
  1. South
  2. North
  3. East
  4. West
How many cardinal directions are there in the world?
  1. 3
  2. 4
  3. 5
  4. 6
Clinical treatment has a range of___ c to ____c.
  1. 35 degree centigrade to 42 degree centigrade
  2. 30 degree centigrade to 42 degree centigrade
  3. 30 degree centigrade to 50 degree centigrade
  4. None
The study of human necessity and desire is called:
  1. Sociology
  2. Economic
  3. politics
  4. None
Coastal breeze is generally produced by:
  1. Conviction
  2. Conduction
  3. Radiation
  4. Sublimation
Solutions in which water is used as solvent are called___.
  1. Universal solutions
  2. Aqueous Solutions
  3. Aqueous Compound
  4. None
Uncontrolled cell growth followed by tumors by major cause:
  1. Mouth ulcer
  2. Stomach ulcer
  3. Cancer
  4. None
Name the scientist who first declare that the Earth revolves around the Sun ?
  1. Newton
  2. Galileo
  3. Copernicus
  4. None of these
مصر کاآ خری باد شاہ کون تھا؟
  1. شاہ فاروق
  2. سليم شاہ
  3. فاروق شاہ
  4. اکبر شاہ
برطانيہ کی ملکہ وکٹوريہ کی عمر ملکہ بنتے وقت کتنی تھی؟
  1. 18
  2. 19
  3. 21
  4. 22
__ me as soon as possible.Its urgent
  1. Call up
  2. Telephone call
  3. Call
  4. None
A process in which liquid changes into gas without boiling is called?
  1. Condensation
  2. Melting
  3. Freezing
  4. Evaporation
which one of the following is instant source of energy?
  1. Sugar
  2. Protein
  3. Vitamin
  4. Carbohydrates
which one is important for solar cell
  1. Carbon
  2. Sodium
  3. Silicon
  4. None
Which of these senses least developed in humans.
  1. Listen
  2. Hearing
  3. Smell
  4. Sight
Which of the following is the most important element in the teaching
  1. Subject matter
  2. Relationship between teachers and students
  3. Both
  4. None
Which of the following is not a solution of the equation 2x+3y=24
  1. (9,-2)
  2. (0,8)
  3. (12,0)
  4. (6,4)
Which of following produces more severe burn:
  1. Sun
  2. Hot air
  3. Steam
  4. None
Which of following part of bacteria has ability to self replicating
  1. Plasmid
  2. Cell wall
  3. Ribosome
  4. None
Which of following color of water is not due to algae?
  1. Red
  2. Green
  3. Blue
  4. None
Which layer near the surface of earth is called?
  1. Thermosphere
  2. Troposphere
  3. Mesosphere
  4. None
Which is the largest joint in the human body?
  1. Knee
  2. Albow
  3. Ankle
  4. Wrist
Which is called distributive law?
  1. a*(b+c)= a*b+a*c
  2. ab=ba
  3. Both
  4. None
How does states were Malaysia have?
  1. 13
  2. 14
  3. 18
  4. 20
Human eye consist of —– coats.
  1. 4
  2. 6
  3. 8
  4. 3
I am writing a letter:
  1. A latter is being written by me
  2. A latter is been written by me
  3. A latter is been written by my
  4. None
If 5 times a number decrease by 2 is 8,Than the number is?
  1. 4
  2. 2
  3. 3
  4. 1
If A={a,b,c} than cardinality set=
  1. 3
  2. 4
  3. 5
  4. 6
If A={1,2,3,4,5} and B={1,2,5,9} than which is true?
  1. A is subset of B
  2. Bis subset of A
  3. A and B are dis joint set
  4. A and B are overlapping
In 11/-13___ -10/39 the accurate symbol in the blank is ?
  1. <
  2. >
  3. =
  4. None
In flowering plants,pericarp;
  1. Outer wall
  2. Inner wall
  3. seed wall
  4. stomata
In figure ” three billion,two hundred one million, five hundred six thousand and fifty six is:
  1. 32305656
  2. 3201506056
  3. 3203565690
  4. 320560566
In human being chances of heart attack can be prevented by
  1. Taking antibiotics
  2. Taking vacancies
  3. Decreasing blood cholesterol level
  4. Increasing blood cholesterol level
In ______ proportion, one quantity is increase by decreasing the other quantity.
  1. Direct
  2. Inverse
  3. Indirect
  4. Simple
I will be having lunch with him. Mark the tense
  1. Past continuous
  2. present continuous
  3. Future continuous
  4. Past perfect
we had a ____ weekend at Karachi.
  1. Enjoyable
  2. Excellent
  3. Charming
  4. None
Vertical columns in the periodic are called:
  1. Rows
  2. Periods
  3. Groups
  4. Blocks
Two sets have same cardinality:
  1. Similar sets
  2. Equivalent sets
  3. Equal sets
  4. None
Two supplementary angles measure (3x+5) and (90x+5), how many degrees are there in X?
  1. 15
  2. 25
  3. 20
  4. 30
This is___ most beautiful desert I have seen.
  1. The
  2. An
  3. A
  4. And
The value of a in 3/-2=a/-6
  1. 18
  2. 9
  3. 0.14
  4. 0.9
The symbol of sodium is :
  1. Na
  2. Sa
  3. Pa
  4. Ca
  5. N
The sum of three consecutive even integers is 66, the largest number among these 3 numbers is :
  1. 20
  2. 30
  3. 22
  4. 24
The sum of 3 consecutive odd number is 51.The intermediate number is?
  1. 13
  2. 19
  3. 15
  4. 17
The solution of Acetic acid is known as:
  1. Vinegar
  2. Salt
  3. Lemon
  4. None
The smallest 9 digit number is:
  1. 900000000
  2. 9
  3. 100000000
  4. 10000000
  5. All of the above
The set {1,2,3} is written in:
  1. Descriptive form
  2. Set builder form
  3. Tabular form
  4. Singular form
The phenomena in which the moon is seam to be big is known as:
  1. Gibbous moon
  2. Waning moon
  3. Waxing moon
  4. None
The oxidation state of Nitrogen in HNO3 is:
  1. -5
  2. -5
  3. -6
  4. +5
The number which tells how many times the divisor is contained in the dividend is :
  1. Dividend
  2. Reminder
  3. quotient
  4. Addend
The number 1,000,000,000 is read as:
  1. 100 billion
  2. 10 billion
  3. one billion
  4. None
The multiplicative Identity of rational number is:
  1. 1
  2. 2
  3. 3
  4. 4
The invaders are___.
  1. Attackers
  2. workers
  3. Belivers
  4. peoples
The expression 7/4/77/48=____
  1. 11/12
  2. 12/11
  3. 12
  4. 11
The antonym for BOLD is:
  1. Timid
  2. Courageous
  3. weak
  4. None
The antonym of ” halt ” is:
  1. Start
  2. Spin
  3. Stop
  4. Begin
The age of mother is two times the age of her daughter., 2 years after the sum of their ages will be 49.. Find the age age of daughter after two years.
  1. 17
  2. 15
  3. 18
  4. 19
Tape recorder converts electrical energy into:
  1. Sound energy
  2. Kinetic energy
  3. Heat energy
  4. None
Subtracting smallest 2 digit number from the largest 2 digit number we get____?
  1. 99
  2. 90
  3. 89
  4. 80
Subtract the first number from the second number 6444325689 and 8344000351.
  1. 1833995664
  2. 1899674662
  3. 1899964733
  4. 1899678492
Study of population is called:
  1. Population expulsion
  2. Genetics
  3. Demography
  4. None
Someone has broken your pen.( passive voice)
  1. Your pen has been broken by someone
  2. Your pen has broken by someone
  3. Our pen has broken by someone
  4. None
Sodium by carbonate is used as:
  1. Sodium
  2. Backing soda
  3. Sugar industry
  4. None
Snake is a/an ___ and ____
  1. Inveterate,reptile
  2. Inveterate,amphibian
  3. Vertebrate ,reptile
  4. None
She was sewing ___ the light of lamp :
  1. In
  2. by
  3. with
  4. on
Reptiles are the example of:
  1. Vertebrate
  2. Invertebrate
  3. Reptiles
  4. Amphibians
Rate of leveling a field is Rs 2.50 per square mater. The field is trapezium in shape.If the base field are 54m and 45m and altitude is 36m , than total expenditure is:
  1. Rs 6550
  2. Rs 5670
  3. Rs 4455
  4. Rs 5500
Product of two negative terms is a ______ term?
  1. Negative
  2. Positive
  3. Rational
  4. Irrational
product of two rational numbers is -28/15. If first rational number is 4/5, than the other rational number is .
  1. -7/3
  2. -5/3
  3. 3/7
  4. 9/3
Pointing a man in a photograph woman said,his brothers father is the only son of my grand father” how is the woman related to man?
  1. Sister
  2. Mother
  3. Grandfather
  4. Father
Part of microscope which holds the slides is referred to as:
  1. Course adjustment
  2. Arm
  3. Stage clip
  4. None
A cuboid has ____ vertices.
  1. 04
  2. 08
  3. 12
  4. 16
Add 0.98+45.102+32.3333+31+0.0009
  1. 109.4162
  2. 109.4353
  3. 109.71539
  4. 109.81539
A2+B2=? ,if A-B=9 AB=3
  1. 87
  2. 81
  3. 85
  4. 27
250 man can finish a work in 20 days working 5 hours a day. To finish the work within 10 days working 8 hours a day, the minimum number of men required is:
  1. 300
  2. 310
  3. 312
  4. 313
240% of 1/8
  1. 3
  2. 30
  3. 0.3
  4. 300
45 is equivalent ___ in binary system.
  1. 11100001
  2. 101101
  3. 110110
  4. 1010101
30%=_____.
  1. 0.03
  2. 0.003
  3. 0.3
  4. 3
3/7 of 14 is?
  1. 21
  2. 6
  3. 21/7
  4. 9/21
3+4*(7+1)=?
  1. 56
  2. 32
  3. 50
  4. 35
2 is the solution of an equation :
  1. 4x-6=2
  2. 2x+2=2
  3. 6x-6=9
  4. 2x+6=2
(2+5)-4+(5-3)=?
  1. 4
  2. 10
  3. 5
  4. 2
On heating,solids:
  1. Expand
  2. Condense
  3. Shrink
  4. Cancel
3x+6y+4x=?
  1. 7x+10xy
  2. 7x+6y
  3. 7x+2y
  4. None
625 is a perfect square of:
  1. 5
  2. 25
  3. 55
  4. None
A human baby is similar to Human being .The property due to which similar characteristics are transfered from the parents to their young ones is termed as:
  1. Transportation
  2. Respiration
  3. Heredity
  4. None
A ladder of length is 4m is placed on wall of height 2m the distance between the base of wall and lower ebb of ladder is:
  1. 3.5 m
  2. 4 m
  3. 5 m
  4. 4,5m
An Acid is indicated by _____final color on litmus:
  1. Red
  2. Orange
  3. Colorless
  4. None
An angle of 360 degree is referred to as:
  1. Straight Angle
  2. Acute Angle
  3. Right Angle
  4. Complete Angle
Area of triangle =2*base*_____?
  1. Base
  2. Altitude
  3. Parameter
  4. None
As compared to plant cell animal cell is characterized the presence of :
  1. Many small vacuoles
  2. A large vacuoles
  3. Penheral nucleus
  4. None
Atomic number is usually presented by symbol:
  1. A
  2. N
  3. M
  4. Z
A Trinomial expression is:
  1. xyz
  2. xy+z
  3. x+y+z
  4. x+yz
A U (Ac)c=?
  1. A
  2. Empty
  3. U-A
  4. None
Basic life function regulated by medulla oblongata, is
  1. Heart beat
  2. Body posture
  3. Intelligence
  4. Thirst
By changing the fraction 4/5 into percentage:
  1. 40
  2. 60
  3. 80
  4. 125
Centriole is present in?
  1. Virus
  2. Bacteria
  3. Plant cell
  4. Animal cell
CFC used in air conditioners, if accidentally released in the air will damage the:
  1. Water
  2. Computer
  3. Air
  4. Ozone Layer
chloroplast is main organelle are in:
  1. Virus
  2. Bacteria
  3. Plant cell
  4. None
Coefficient of “xy” is
  1. 5
  2. 1
  3. 3
  4. -1
Converting 1 into percentage we get____.
  1. 0.1%
  2. 10%
  3. 100%
  4. 50%
Converting 0.125 to fraction we get:
  1. 125
  2. 1/4
  3. 1/8
  4. 1/100
Data is usually available in the form of:
  1. Grouped data
  2. Un grouped data
  3. Qualitative data
  4. Quantitative data
Dental amalgamation is an example of solution.
  1. Liquid in liquid
  2. Solid in liquid
  3. Gas in liquid
  4. Liquid in solid
Dividing rupees under into class student each will get:
  1. 4
  2. 6
  3. 10
  4. None
The distance covered by a unit of time is called?
  1. Force
  2. Speed
  3. Momentum
  4. None
Earth is :
  1. Perfect circle
  2. Perfect sphere
  3. Imperfect circle
  4. None
Electric device that converts AC to DC is called _____?
  1. Battery
  2. Rectifier
  3. Both
  4. None
Electric bells works on the principal of :
  1. Conduction effect of current
  2. Physical effect of current
  3. Chemical effect of current
  4. Magnetic effect of current
Even number >40 but <43 are:
  1. 40
  2. 40,41,42
  3. 42
  4. 40

Read More: All ASI Past Papers and Syllabus for ASI test preparation.

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