Ppsc General Science Mcqs Lastest

1

What scientific principle underlies the ability of an airplane to achieve flight?

A

Newton’s Third Law of Motion

B

The Archimedes Principle

C

The Bernoulli Principle

D

The Law of Energy Conservation

2

What is the total count of fundamental units in the International System of Units (SI)?

A

Seven

B

Six

C

Twelve

D

Not listed here

3

Leukocytes, commonly known as white blood cells, serve to defend the body against what?

A

Illness

B

Physical stature

C

The aging process

D

None of the options

4

What form of energy is contained within coal?

A

Energy of motion

B

Energy from chemical bonds

C

Stored positional energy

D

None of the above

5

The hue of a star is an indicator of its what?

A

Its age

B

Its proximity to Earth

C

Its surface temperature

D

Its diameter

6

Which of these was an invention of Benjamin Franklin?

A

Electricity

B

The lightning rod

C

The telephone

D

The telescope

7

At what temperature does water turn to ice?

A

0 degrees Celsius

B

-2 degrees Celsius

C

-4 degrees Celsius

D

None of the mentioned

8

Which planet in our solar system has the greatest mass?

A

Earth

B

Jupiter

C

Saturn

D

Neptune

9

Which celestial body is considered the final planet of our solar system?

A

Uranus

B

Neptune

C

Pluto

D

Saturn

10

What is the term for the pollination of flowers carried out by birds?

A

Aeverology

B

Ornithology

C

Ornithophily

D

Polligramy

11

The various forms of frozen water on Earth are collectively referred to as the:

A

Hydrosphere

B

Cryosphere

C

Frigid Zone

D

Biosphere

12

A blotting paper absorbs liquid primarily through which mechanism?

A

Surface Action

B

Capillary Action

C

Viscosity

D

Boldness

13

In the atmosphere, what is the relationship between low temperature and pressure?

A

Pressure is low

B

Pressure is high

C

Pressure is normal

D

All of the above

14

Who is credited with the discovery of the atomic nucleus?

A

Goldstein

B

James Chadwick

C

J. J. Thomson

D

Rutherford

15

The field of Primatology involves the study of what?

A

Human Behavior

B

Primates

C

Flora and Fauna

D

Forest Ecosystems

16

What is the molecular mass of a single water molecule?

A

16 amu

B

17 amu

C

18 amu

D

20 amu

17

In the periodic table of elements, what are the vertical columns called?

A

Periods

B

Groups

C

Rows

D

Lanthanide series

18

Paleontology is the scientific study of:

A

Airborne organic particles

B

Prehistoric Life and Fossils

C

Organismal anatomical structure

D

Ecological interactions

19

The fruit apple is a good source of which element?

A

Fluorine

B

Calcium

C

Iron

D

Phosphorus

20

The scientific name for humans, Homo Sapiens, is derived from Latin and designates the:

A

Genus & Family

B

Family & Order

C

Genus & Class

D

Genus & Species

21

What is the name for the protein shell that encloses a virus?

A

Plasmid

B

Capsule

C

Plastid

D

Capsid

22

Which of the following muscles is classified as a Voluntary Muscle?

A

Biceps

B

Cardiac Muscle

C

Stomach Muscle

D

Vessel Muscle

23

Hepatitis is a condition caused by what type of agent?

A

Protozoans

B

Algae

C

Fungi

D

A Virus

24

What is the standard SI unit for measuring electric charge?

A

Ampere

B

Coulomb

C

Ohm

D

Volt

25

Dermatophagia is identified as what kind of condition?

A

Physiological

B

Psychological

C

Dermatological

D

Genital

26

What is the largest artery found in the human body?

A

Subclavian artery

B

Aorta

C

Brachial artery

D

None of the options provided

27

A deficiency in which Vitamin leads to Sailor's Disease in humans?

A

Vitamin A

B

Vitamin K

C

Vitamin C

D

Vitamin D

28

Among the following elements, which is considered the most stable?

A

Uranium

B

Hydrogen

C

Oxygen

D

Lead

29

What device is designed to transform mechanical energy into electrical energy?

A

Motor

B

Transformer

C

Coil

D

Generator

30

The blue appearance of a clear sky results from which phenomenon?

A

Reflection of light

B

Refraction of light

C

Diffraction of light

D

Dispersion of light

31

Individuals residing at high altitudes, such as mountains, typically exhibit a:

A

lower count of Red Blood Cells

B

higher count of Red Blood Cells

C

lower count of White Blood Cells

D

higher count of White Blood Cells

32

Copper is a primary material used for manufacturing what?

A

Brick kilns

B

Children's toys

C

Kitchen utensils

D

Electrical wires

33

Which element is commercially extracted from seawater?

A

Beryllium

B

Magnesium

C

Aluminium

D

None of these listed

34

When a bottle filled with water is left to freeze, it shatters because:

A

Water volume increases upon freezing

B

The bottle shrinks at the freezing point

C

The external temperature is lower than the internal temperature

D

None of the reasons above

35

A tight-rope walker uses a long pole for what purpose?

A

To support him in case of a fall

B

To distribute his weight and lessen pressure on the rope

C

To increase his weight, keeping the rope taut

D

To maintain his center of gravity vertically above the rope

36

The sky looks blue due to the Earth's atmosphere's ability to:

A

Scatter blue light

B

Reflect blue light

C

Transmit blue light

D

Possess a natural blue covering

37

The characteristic that allows metals to be hammered into thin layers is known as?

A

Ductility

B

Malleability

C

Conductivity

D

Density

38

The steering mechanism of a car operates through?

A

A single applied force

B

Two parallel forces in the same direction

C

Two non-parallel forces in opposite directions

D

A pair of forces on the same line in opposite directions

39

What is the approximate sound intensity level that can cause damage to the eardrum?

A

20 dB

B

60 dB

C

100 dB

D

160 dB

40

What is considered the primary substance responsible for depleting the Ozone layer in the stratosphere?

A

Carbon dioxide

B

Chlorofluorocarbons

C

Nitrogen oxides

D

Methane

41

Fuse wire is typically composed of what alloy?

A

63% tin and 37% lead

B

63% lead and 37% tin

C

63% tin and 37% aluminum

D

63% lead and 37% aluminum

42

What represents the fundamental unit of heredity?

A

Chromosomes

B

Gene

C

Nucleotides

D

none of these

43

The distinct shape of the outer ear is maintained by what?

A

Elastic cartilage

B

Fibrocartilage

C

Articular cartilage

D

none of the options

44

When a patient's immune system reacts adversely to a medication, it is known as?

A

A super infection

B

Drug resistance

C

An allergy

D

none of the options

45

Which of the following is not a recognized region of the spinal cord?

A

Thoracic

B

Pelvic

C

Lumbar

D

none of the options

46

The autonomic nervous system controls all of the following except?

A

Cardiac muscles

B

Skeletal muscles

C

Smooth muscles

D

none of the options

47

Injury to which nerve could lead to impaired eye movement?

A

Optic nerve

B

Trigeminal nerve

C

Abducens nerve

D

none of the options

48

Blood serum is essentially blood plasma without its?

A

Calcium ions

B

Clotting proteins

C

Globulins

D

none of the options

49

Which of these substances is not classified as an enzyme?

A

Chemotrypsin

B

Secretin

C

Pepsin

D

none of the options

50

A baby with blood type O+ cannot have a mother with which blood type?

A

AB-

B

O-

C

O+

D

none of the options

51

Knowing which of the following automatically reveals the number of electrons in a neutral atom?

A

The atomic number

B

The atomic weight

C

The number of orbitals

D

none of the options

52

The branch of microbiology focused on disease occurrence within human populations is?

A

Immunology

B

Parasitology

C

Epidemiology

D

none of the options

53

Which of the following is considered a secondary plant nutrient?

A

Nitrogen

B

Phosphorus

C

Sulphur

D

none of the options

54

What technology has largely superseded vacuum tubes?

A

Conductors

B

Diodes

C

Transistors

D

None of the options

55

A Geiger-Muller counter is an instrument used for detecting what?

A

Protons

B

Neutrons

C

Photons

D

none of the options

56

On the Richter scale, what was the measured severity of the 2005 earthquake in Pakistan?

A

6.9

B

7.6

C

7.1

D

none of the options

57

The unit used for measuring the amount of Ozone in the atmosphere is the?

A

Dobson Unit

B

Dalton

C

Coulomb

D

none of the options

58

Which of the following nations generates the most energy from atomic reactors?

A

France

B

USA

C

UK

D

none of the options

59

The coulomb is the scientific unit designated for measuring what?

A

Velocity

B

Temperature

C

Mass

D

None of these

60

What instrument is used to check the purity of milk?

A

Lactometer

B

Hygrometer

C

Manometer

D

Sonometer

61

The concept of the Expanding Universe was initially proposed by whom?

A

Einstein

B

Newton

C

Galileo

D

Hubble

62

At which temperature does water reach its maximum density?

A

0°C

B

4°C

C

4 K

D

4.8°C

63

To view three-dimensional images, which device is required?

A

A binocular

B

A camera

C

An epidiascope

D

A stereoscope

64

A satellite orbiting the Earth at a constant speed exhibits what kind of motion?

A

An accelerated motion

B

Zero acceleration

C

Uniform acceleration

D

Irregular acceleration

65

The water-resistant quality of materials for raincoats and tents is due to their?

A

Surface tension

B

Viscosity

C

Specific gravity

D

Elasticity

66

The process by which blotting paper soaks up ink involves what phenomenon?

A

Ink viscosity

B

The capillary action phenomenon

C

Ink diffusion through the blotter

D

A siphoning action

67

How do detergents dissolved in water aid in cleaning clothes?

A

By raising the water's temperature

B

By having a chemical reaction with the dirt

C

By lowering the water's surface tension

D

By dissolving the dirt particles

68

To protect iron pipes from corrosion, they are commonly coated with zinc in a process called?

A

Electroplating

B

Annealing

C

Galvanization

D

Vulcanization

69

The crackling noise produced when combing dry hair with a hard rubber comb is caused by?

A

The hair touching the charged comb

B

Tiny electric sparks

C

The friction between the comb and hair

D

None of the choices above

70

Why is a scald from steam more severe than one from boiling water?

A

Steam has the ability to penetrate the skin

B

Steam is at a greater temperature

C

Steam holds more energy than boiling water

D

Steam has a higher pressure

71

Why is water a particularly effective coolant for a car's engine?

A

Because water is a good conductor of heat

B

Because water possesses a very high specific heat capacity

C

Because water's boiling point is relatively high

D

Because the evaporation of water creates significant cooling

72

A train speeds past a station. A boy standing at the platform's edge is most likely to?

A

Be unaffected

B

Be pushed away from the train

C

Be pulled towards the train

D

Be pushed or pulled depending on train speed

73

Which set of colors is combined to create the color spectrum in television?

A

Red, green, and blue

B

Orange, black, and violet

C

White, red, and yellow

D

Yellow, green, and blue

74

A Fahrenheit thermometer shows a temperature of 14°F. What is the equivalent reading on the Celsius scale?

A

–20°C

B

–10°C

C

+10°C

D

+20°C

75

A lead ball descends through water more slowly than through air primarily because?

A

The value of 'g' is lower in water

B

The density of air is less than water's density

C

Of the presence of viscous force in water

D

Of water's surface tension

76

The rear-view mirror on a motor vehicle is typically what type of mirror?

A

Concave

B

Plane

C

Convex

D

Biconcave

77

What is the main purpose of feathers on a bird?

A

To provide insulation and conserve body heat

B

To offer a striking surface for the wings during flight

C

To render the body surface waterproof

D

To display coloration for species and gender identification

78

What is 'Stealth Technology'?

A

A device that makes an aircraft invisible to radar when attached

B

A special coating that diminishes an aircraft's radar visibility

C

A technology enabling aircraft to spy in enemy territory

D

A method for secretly dropping paratroopers behind enemy lines

79

Bats are capable of flying in darkness because they utilize what?

A

Ultraviolet Waves

B

Ultrasonic Waves

C

Electromagnetic Waves

D

A Special Retina

80

The Green House Effect is primarily the result of an excess of which gas?

A

Carbon dioxide

B

Carbon monoxide

C

Carbon tetrachloride

D

None of the above gases

81

Why can't TV transmissions extend over a very large area?

A

Because the power of TV waves is very restricted

B

Because picture clarity diminishes after a certain distance

C

Because the Earth's shape is spherical

D

Because air is a poor medium for light and sound waves

82

Approximately what percentage of cow's milk is water?

A

60%

B

65%

C

72%

D

80%

83

In which layer of the atmosphere is most of the ozone concentrated?

A

Mesosphere

B

Troposphere

C

Stratosphere

D

Ionosphere

84

An iceberg is floating in the sea. What fraction of its mass will be visible above the water's surface?

A

One-tenth

B

One-fifth

C

One-fourth

D

One-third

85

Why does the sun look red during sunrise and sunset but white at midday?

A

Due to refraction

B

Because it is cooler at sunrise and sunset

C

Due to diffraction causing the red spectrum to reach Earth

D

Due to light scattering by dust and air molecules

86

An astronaut within a spacecraft experiences weightlessness, which means that?

A

The astronaut's mass becomes zero

B

The force of gravity stops acting inside the spacecraft

C

The astronaut is beyond the reach of Earth's gravitational pull

D

Both the astronaut and the spacecraft are in a state of free fall

87

A lake begins to freeze due to a cold atmosphere. Where will the ice first form?

A

At the bottom of the lake

B

In the middle section

C

On the top surface

D

Simultaneously throughout the entire water body

88

The striking color patterns seen on a peacock's tail feathers are created by what?

A

Selective absorption of light

B

Selective reflection of light

C

Interference of light

D

The natural color pattern of the feathers

89

What is the typical pulse rate for an average adult?

A

140-150 bpm

B

115-125 bpm

C

72-80 bpm

D

60 bpm

90

When someone moves from a brightly lit area into a dark room, they can't see well for a moment because the?

A

Eye cannot adapt itself instantly

B

Retina temporarily loses sensitivity

C

Iris cannot dilate the pupil right away

D

Lens-to-retina distance needs time for adjustment

91

Which component of a camera is analogous to the retina in a human eye?

A

The Lens

B

The Film

C

The Aperture

D

The Shutter

92

"Dolly" is the name given to the?

A

First successfully cloned sheep

B

First successfully cloned monkey

C

First baby conceived via test-tube

D

First discovered human fossil

93

What is the primary stimulant found in tea leaves?

A

Brucine

B

Caffeine

C

Phenylalanine

D

Theine

94

For what condition is dialysis used as a treatment?

A

Kidney failure

B

Heart weakness

C

Brain diseases

D

None of these conditions

95

ECG is a diagnostic tool used to check for ailments of the?

A

Brain

B

Heart

C

Kidneys

D

Lungs

96

How can short-sightedness be corrected?

A

By using a convex lens

B

By using a concave lens

C

By using a convex-concave lens

D

By using a concave-convex lens

97

Trachoma is a disease affecting which part of the body?

A

The Liver

B

The Eyes

C

The Lungs

D

The Kidneys

98

Myopia is a medical condition related to the?

A

Ears

B

Eyes

C

Lungs

D

Brain

99

Leukemia is a type of disease that affects the?

A

Lungs

B

Blood

C

Skin

D

Nerves

100

The medulla oblongata is a component of the human?

A

Heart

B

Brain

C

Liver

D

Sex organ

GENERAL SCIENCE MCQs

What scientific principle underlies the ability of an airplane to achieve flight?

What is the total count of fundamental units in the International System of Units (SI)?

Leukocytes, commonly known as white blood cells, serve to defend the body against what?

What form of energy is contained within coal?

The hue of a star is an indicator of its what?

Which of these was an invention of Benjamin Franklin?

At what temperature does water turn to ice?

Which planet in our solar system has the greatest mass?

Which celestial body is considered the final planet of our solar system?

What is the term for the pollination of flowers carried out by birds?

The various forms of frozen water on Earth are collectively referred to as the:

A blotting paper absorbs liquid primarily through which mechanism?

In the atmosphere, what is the relationship between low temperature and pressure?

Who is credited with the discovery of the atomic nucleus?

The field of Primatology involves the study of what?

What is the molecular mass of a single water molecule?

In the periodic table of elements, what are the vertical columns called?

Paleontology is the scientific study of:

The fruit apple is a good source of which element?

The scientific name for humans, Homo Sapiens, is derived from Latin and designates the:

What is the name for the protein shell that encloses a virus?

Which of the following muscles is classified as a Voluntary Muscle?

Hepatitis is a condition caused by what type of agent?

What is the standard SI unit for measuring electric charge?

Dermatophagia is identified as what kind of condition?

What is the largest artery found in the human body?

A deficiency in which Vitamin leads to Sailor's Disease in humans?

Among the following elements, which is considered the most stable?

What device is designed to transform mechanical energy into electrical energy?

The blue appearance of a clear sky results from which phenomenon?

Individuals residing at high altitudes, such as mountains, typically exhibit a:

Copper is a primary material used for manufacturing what?

Which element is commercially extracted from seawater?

When a bottle filled with water is left to freeze, it shatters because:

A tight-rope walker uses a long pole for what purpose?

The sky looks blue due to the Earth's atmosphere's ability to:

The characteristic that allows metals to be hammered into thin layers is known as?

The steering mechanism of a car operates through?

What is the approximate sound intensity level that can cause damage to the eardrum?

What is considered the primary substance responsible for depleting the Ozone layer in the stratosphere?

Fuse wire is typically composed of what alloy?

What represents the fundamental unit of heredity?

The distinct shape of the outer ear is maintained by what?

When a patient's immune system reacts adversely to a medication, it is known as?

Which of the following is not a recognized region of the spinal cord?

The autonomic nervous system controls all of the following except?

Injury to which nerve could lead to impaired eye movement?

Blood serum is essentially blood plasma without its?

Which of these substances is not classified as an enzyme?

A baby with blood type O+ cannot have a mother with which blood type?

Knowing which of the following automatically reveals the number of electrons in a neutral atom?

The branch of microbiology focused on disease occurrence within human populations is?

Which of the following is considered a secondary plant nutrient?

What technology has largely superseded vacuum tubes?

A Geiger-Muller counter is an instrument used for detecting what?

On the Richter scale, what was the measured severity of the 2005 earthquake in Pakistan?

The unit used for measuring the amount of Ozone in the atmosphere is the?

Which of the following nations generates the most energy from atomic reactors?

The coulomb is the scientific unit designated for measuring what?

What instrument is used to check the purity of milk?

The concept of the Expanding Universe was initially proposed by whom?

At which temperature does water reach its maximum density?

To view three-dimensional images, which device is required?

A satellite orbiting the Earth at a constant speed exhibits what kind of motion?

The water-resistant quality of materials for raincoats and tents is due to their?

The process by which blotting paper soaks up ink involves what phenomenon?

How do detergents dissolved in water aid in cleaning clothes?

To protect iron pipes from corrosion, they are commonly coated with zinc in a process called?

The crackling noise produced when combing dry hair with a hard rubber comb is caused by?

Why is a scald from steam more severe than one from boiling water?

Why is water a particularly effective coolant for a car's engine?

A train speeds past a station. A boy standing at the platform's edge is most likely to?

Which set of colors is combined to create the color spectrum in television?

A Fahrenheit thermometer shows a temperature of 14°F. What is the equivalent reading on the Celsius scale?

A lead ball descends through water more slowly than through air primarily because?

The rear-view mirror on a motor vehicle is typically what type of mirror?

What is the main purpose of feathers on a bird?

What is 'Stealth Technology'?

Bats are capable of flying in darkness because they utilize what?