Ppsc General Science Mcqs Lastest

1

Which of these diseases is viral in origin?

A

Smallpox

B

Tuberculosis

C

Malaria

D

Cholera

2

What organ is primarily affected by malaria?

A

Heart

B

Lungs

C

Spleen

D

Kidneys

3

Which blood group is known as the universal recipient, able to receive from any other group?

A

B

AB

C

B

D

O

4

What is the average number of heartbeats per minute for a typical adult male?

A

50

B

70

C

80

D

100

5

Which vitamin is essential for maintaining healthy vision in humans?

A

Vitamin B

B

Vitamin C

C

Vitamin A

D

Vitamin D

6

Among these nutrients, which provides the highest number of calories?

A

Carbohydrates

B

Fats

C

Proteins

D

Vitamins

7

Which human gland is often referred to as the 'master gland'?

A

Pancreas

B

Thyroid

C

Pituitary

D

Spleen

8

What is the approximate number of bones in a newborn baby?

A

206

B

230

C

280

D

300

9

What is the largest gland found within the human body?

A

Thyroid

B

Liver

C

Pancreas

D

None of the above

10

Which blood type is considered the universal donor?

A

O

B

AB

C

A

D

B

11

Which of these glands is responsible for producing tears?

A

Lachrymal

B

Pituitary

C

Thyroid

D

Pancreas

12

What is the primary role of hemoglobin?

A

Transporting oxygen

B

Eliminating bacteria

C

Preventing anemia

D

Utilizing energy

13

What is the main purpose of the kidneys?

A

Regulating blood pressure

B

Controlling body temperature

C

Filtering waste from the body

D

Assisting in food digestion

14

What is the core component of hemoglobin?

A

Chlorine

B

Iron

C

Calcium

D

None of the above

15

What are the primary components of bones and teeth?

A

Calcium carbonate

B

Calcium phosphate

C

Calcium sulphate

D

Calcium nitrate

16

In which part of the body is the tibia bone located?

A

Skull

B

Arm

C

Leg

D

Face

17

What is the name of the largest section of the human brain?

A

Medulla oblongata

B

Cerebellum

C

Cerebrum

D

None of the above

18

How many bones does a typical adult human have?

A

210

B

260

C

206

D

300

19

Where in the body are red blood cells produced?

A

Liver

B

Bone marrow

C

Kidneys

D

Heart

20

What is the total blood volume in a normal adult?

A

5-6 liters

B

3-4 liters

C

8-10 liters

D

10-12 liters

21

Which vitamin aids in the process of blood clotting?

A

Vitamin B1

B

Vitamin B2

C

Vitamin D

D

Vitamin K

22

What is considered the normal body temperature for a human?

A

81.1 °C

B

37.0 °C

C

98.6 °C

D

21.7 °C

23

Where does the majority of nutrient absorption occur in humans?

A

Small intestine

B

Stomach

C

Liver

D

Large intestine

24

Cobalt is a material that is?

A

Strongly drawn to a magnet

B

Not drawn to a magnet

C

Not magnetic

D

Weakly drawn to a magnet

25

The seismograph, designed for recording earthquake waves, measures them on what scale?

A

Diatonic scale

B

Fahrenheit Scale

C

Richter scale

D

Celsius Scale

26

Myopia, a defect in human vision, can be corrected using which type of lens?

A

Convex lens

B

Concave lens

C

Cylindrical lens

D

Plano-convex lens

27

What upward velocity is required for an object to overcome Earth's gravitational pull?

A

25 miles per sec

B

60 miles per sec

C

7 miles per sec

D

10 miles per sec

28

A nuclear reactor facilitates controlled nuclear reactions, while a Geiger-Müller counter is used to detect what?

A

Current

B

Voltage

C

Nuclear Radiation

D

Power

29

How can the magnifying power of a simple microscope be enhanced?

A

By increasing the lens's focal length

B

By decreasing the lens's focal length

C

With a large aperture lens

D

With a short aperture lens

30

What is the deepest known point on Earth?

A

Trench

B

Mariana Trench

C

Mangrove

D

Groove

31

What causes the twinkling effect of stars?

A

Reflection of light

B

Polarization of light

C

Refraction of light

D

Interference of light

32

A lactometer, a type of hydrometer, measures the specific gravity of what liquid?

A

Honey

B

Water

C

Milk

D

Olive oil

33

What is the temperature of a deceased body?

A

0°C

B

37°C

C

Room Temperature

D

The temperature of its surroundings

34

German Silver is composed of which alloy of metals?

A

Zn + Ni

B

Cu + Zn

C

Cu + Ni

D

Cu + Sn

35

At which pole is the continent of Antarctica located?

A

North Pole

B

South Pole

C

Middle of the Earth

D

Equator

36

What does the unit 'Parsec' measure?

A

Energy

B

Time

C

Power

D

Distance

37

In a fission reaction, a heavy nucleus splits, whereas in a fusion reaction, two or more nuclei combine. What is the latter process called?

A

Chemical Reaction

B

Nuclear reaction

C

Fission nuclear reaction

D

Fusion nuclear reaction

38

Radar and Sonar operate on a similar principle. Radar uses radio waves, while Sonar uses what?

A

Red waves

B

Infrared waves

C

Ultrasonic waves

D

Supersonic waves

39

A woman who is six feet tall wants to see her entire reflection in a plane mirror. What is the minimum required length for the mirror?

A

6 feet

B

12 feet

C

4 feet

D

3 feet

40

When sunlight enters a dark room, its path becomes visible due to airborne dust particles. This happens because light is?

A

Visible

B

Transparent

C

Invisible

D

Opaque

41

It's possible to identify someone in the dark just by their voice due to its unique?

A

Pitch

B

Frequency

C

Time period

D

Quality

42

For an echo to be clearly heard at normal temperatures, what is the minimum distance required from the sound source to the reflecting surface?

A

1120 ft

B

120 ft

C

56 ft

D

100 ft

43

Why does an iron pipe feel colder than a wooden window in winter? Because wood is a?

A

Conductor

B

Non-Conductor

C

Semi-Conductor

D

Different state of matter

44

Water in a kettle heats up through convection. How does a person sitting near a fire feel its heat?

A

Conduction

B

Convection

C

Radiation

D

Reflection

45

Why is a gap left between sections of railway tracks when they are joined end to end?

A

To save steel

B

To prevent accidents from winter contraction

C

To help bear the train's weight

D

To avoid accidents from summer expansion

46

What is the name of Ibn-Sina's renowned book that covers human physiology and medicine?

A

Al-Qanun

B

Al-Masudi

C

New Renaissance

D

Tadhkira

47

An animal that actively hunts and kills other living animals for food is known as a?

A

Parasite

B

Scavenger

C

Predator

D

Mammal

48

Fruits like bananas that develop without seeds are referred to as?

A

Seedless fruits

B

Parthenogenesis fruits

C

Parthenocarpic fruits

D

Placental fruits

49

The quartz crystal in a watch operates based on which scientific principle?

A

Photoelectric effect

B

Stark effect

C

Thermionic effect

D

Piezo-electric effect

50

An oasis is a feature typically associated with what environment?

A

Glaciers

B

Desert

C

Islands

D

Volcanoes

51

Why is yeast added to bread dough?

A

It produces carbon dioxide

B

It produces sugar

C

It produces bacteria

D

It produces oxygen

52

The Aurora Borealis, a natural light display in the northern hemisphere, is caused by radiation from the?

A

Ionosphere

B

Troposphere

C

Mesosphere

D

Stratosphere

53

What type of harmful radiation does the ozone layer protect us from?

A

Infra-red

B

Ultraviolet

C

X-rays

D

Gamma rays

54

Which of the following is classified as a non-metallic mineral?

A

Manganese

B

Magnesium

C

Gypsum

D

Bauxite

55

Sedimentary rocks are typically characterized as being?

A

Porous

B

Hard

C

Rough

D

Brittle

56

What is the function of a moderator within a nuclear reactor?

A

To accelerate neutrons

B

To reduce the speed of neutrons

C

To increase the electron count

D

To decrease the electron count

57

Which layer of the atmosphere facilitates radio communication?

A

Exosphere

B

Ionosphere

C

Troposphere

D

Stratosphere

58

What kind of fuel is utilized in a Fast Breeder Reactor?

A

Uranium Oxide

B

Uranium Plutonium carbide

C

Uranium Plutonium Oxide

D

Uranium thorium Oxide

59

What is the primary cause of monsoons?

A

The seasonal reversal of wind patterns

B

The Earth's revolution

C

The movement of clouds

D

An increase in temperature

60

What does the term 'Blue Shift' signify in astronomy?

A

An object appearing bluer as it moves toward an observer

B

A star changing from white to blue

C

The sun becoming blue in the future

D

The initial blue color of a black hole

61

A radioactive element has a half-life of 8 days. How much time will pass for it to decrease from 10 mg to 5 mg?

A

4 days

B

12 days

C

16 days

D

8 days

62

How many spark plugs are required in a diesel engine?

A

2

B

3

C

0

D

4

63

Where are most asteroids located?

A

In the asteroid belt between Mars and Jupiter

B

In the asteroid belt between Mars and Venus

C

In the asteroid belt between Jupiter and Venus

D

Spread throughout the sky

64

How are television signals transformed into light signals?

A

By an optical fiber

B

By a transistor

C

By a decoder

D

By a photo diode

65

What is the reason a total solar eclipse does not occur every new moon?

A

The relative size of the Earth to the moon

B

The Moon's orbital path around Earth

C

The Earth's rotational direction around the Sun

D

The portion of the sun obscured by the moon

66

Which of these atmospheric layers enables radio transmissions?

A

Troposphere

B

Ionosphere

C

Mesosphere

D

Stratosphere

67

Diamond, a highly valued gemstone, is made of what single element?

A

Carbon

B

Gold

C

Silver

D

Platinum

68

What is the term for the point in Earth's orbit when it is farthest from the sun, leading to summer in the northern hemisphere?

A

Aphelion

B

Perihelion

C

Perigee

D

Apogee

69

What is the field of Eugenics the study of?

A

Modifying human traits by altering genetic components

B

The people of the European region

C

The various races of humanity

D

The genetics of plants

70

Which constellation is considered the most brilliant and magnificent in the night sky?

A

Orion

B

Columba

C

Canis Major

D

Taurus

71

What is the orbital period of the planet Mercury as it revolves around the sun?

A

88 days

B

365 days

C

2 years

D

98 days

72

Which of the following materials is the most elastic?

A

Steel

B

Rubber

C

Glass

D

Sponge

73

Bronze is an alloy created from which metals?

A

Copper and Zinc

B

Tin and Zinc

C

Copper and Tin

D

Iron and Zinc

74

What does a hygrometer measure?

A

The speed of sound

B

The density of milk

C

The humidity in the air

D

The specific gravity of liquids

75

What is the chemical name for vinegar?

A

Sodium Nitrate

B

Dilute acetic acid

C

Chloride of lime

D

Calcium

76

A deficiency in which vitamin leads to decreased hemoglobin production?

A

Biotin

B

Thiamine

C

Niacin

D

Pyridoxine

77

What is dry ice?

A

Methane hydrate

B

Liquid Nitrogen

C

Solid Carbon dioxide

D

Frozen Water

78

What are chemicals used for exterminating rats and mice called?

A

Insecticides

B

Rodenticides

C

Fungicides

D

Herbicides

79

What is the term for the scientific study of the manners and customs of peoples?

A

Ethnology

B

Morphology

C

Ethics

D

Genetics

80

Which instrument is used to measure extremely high temperatures?

A

Manometer

B

Thermostat

C

Chronometer

D

Pyrometer

81

Who is considered the founder of modern astronomy?

A

Archimedes

B

William Gilbert

C

Nicolas Copernicus

D

Michael Faraday

82

On what biological process is the role of biotechnology in food production based?

A

Decomposition

B

Respiration

C

Digestion

D

Fermentation

83

Which method of drug abuse carries the highest risk of HIV (AIDS) infection?

A

Smoking cigarettes

B

Consuming alcohol

C

Injecting heroin

D

Taking excess aspirin

84

If both parents are heterozygous normal, what is the probability of their baby being diabetic?

A

Zero

B

1/4

C

1/2

D

3/4

85

Pakistan's Dr. Abdus Salam was a key contributor to the unification of which two forces?

A

Electromagnetic and gravitational forces

B

Electromagnetic and weak nuclear forces

C

Gravitational and weak nuclear forces

D

Weak and strong nuclear forces

86

Laughing gas is a chemical compound made of which two elements?

A

Nitrogen + Hydrogen

B

Nitrogen + Carbon

C

Nitrogen + Oxygen

D

Oxygen + Carbon

87

Which part of the eye is the light-sensitive layer?

A

Choroid

B

Sclera

C

Retina

D

Cornea

88

What is the common mineral salt found in human sweat?

A

Calcium Oxalate

B

Potassium Sulphate

C

Sodium Chloride

D

Iron Sulphate

89

Individuals with which blood group are known as universal recipients?

A

A+

B

B+

C

AB+

D

O+

90

What is the study of life in outer space called?

A

Endobiology

B

Exobiology

C

Enterobiology

D

Neobiology

91

What is a primary function of the Earth's ozone layer?

A

To stop global warming

B

To block ultraviolet rays

C

To soak up pollution

D

All of these

92

How can base metals be transformed into gold?

A

Through heating

B

Through beating

C

Through artificial nuclear radioactivity

D

Through a chemical reaction

93

Who was the Muslim scientist that wrote the famous book "Al-Qanun"?

A

Jabar bin Hayyan

B

Zakariya Al-Razi

C

Abu Ali Sina

D

Abdul Qasim Majreeti

94

Which of these elements is not found in abundance in the Earth's crust?

A

Silicon

B

Radium

C

Aluminum

D

Carbon

95

Which woody raw material is primarily used to manufacture paper pulp?

A

Cotton

B

Poplar

C

Bagasse

D

Rice straw

96

What is the approximate alcohol percentage in rectified spirit?

A

80%

B

95%

C

70%

D

85%

97

Which radioactive isotope of Uranium is used in nuclear bombs?

A

92 U 235

B

92 U 234

C

92 U 233

D

92 U 238

98

Why is human population growth most significant in developing countries?

A

The birth rate is high in these countries

B

The death rate is high in these countries

C

A large part of the population is of child-bearing age

D

The majority of the world's population resides in industrialized nations.

99

A bronze medal is composed of which metals?

A

copper, nickel

B

copper, tin

C

copper, silver

D

copper, zinc

100

To which category does the hummingbird belong?

A

Ectotherm

B

Endotherm

C

Exotherm

D

Heterotherm

GENERAL SCIENCE MCQs

Which of these diseases is viral in origin?

What organ is primarily affected by malaria?

Which blood group is known as the universal recipient, able to receive from any other group?

What is the average number of heartbeats per minute for a typical adult male?

Which vitamin is essential for maintaining healthy vision in humans?

Among these nutrients, which provides the highest number of calories?

Which human gland is often referred to as the 'master gland'?

What is the approximate number of bones in a newborn baby?

What is the largest gland found within the human body?

Which blood type is considered the universal donor?

Which of these glands is responsible for producing tears?

What is the primary role of hemoglobin?

What is the main purpose of the kidneys?

What is the core component of hemoglobin?

What are the primary components of bones and teeth?

In which part of the body is the tibia bone located?

What is the name of the largest section of the human brain?

How many bones does a typical adult human have?

Where in the body are red blood cells produced?

What is the total blood volume in a normal adult?

Which vitamin aids in the process of blood clotting?

What is considered the normal body temperature for a human?

Where does the majority of nutrient absorption occur in humans?

Cobalt is a material that is?

The seismograph, designed for recording earthquake waves, measures them on what scale?

Myopia, a defect in human vision, can be corrected using which type of lens?

What upward velocity is required for an object to overcome Earth's gravitational pull?

A nuclear reactor facilitates controlled nuclear reactions, while a Geiger-Müller counter is used to detect what?

How can the magnifying power of a simple microscope be enhanced?

What is the deepest known point on Earth?

What causes the twinkling effect of stars?

A lactometer, a type of hydrometer, measures the specific gravity of what liquid?

What is the temperature of a deceased body?

German Silver is composed of which alloy of metals?

At which pole is the continent of Antarctica located?

What does the unit 'Parsec' measure?

In a fission reaction, a heavy nucleus splits, whereas in a fusion reaction, two or more nuclei combine. What is the latter process called?

Radar and Sonar operate on a similar principle. Radar uses radio waves, while Sonar uses what?

A woman who is six feet tall wants to see her entire reflection in a plane mirror. What is the minimum required length for the mirror?

When sunlight enters a dark room, its path becomes visible due to airborne dust particles. This happens because light is?

It's possible to identify someone in the dark just by their voice due to its unique?

For an echo to be clearly heard at normal temperatures, what is the minimum distance required from the sound source to the reflecting surface?

Why does an iron pipe feel colder than a wooden window in winter? Because wood is a?

Water in a kettle heats up through convection. How does a person sitting near a fire feel its heat?

Why is a gap left between sections of railway tracks when they are joined end to end?

What is the name of Ibn-Sina's renowned book that covers human physiology and medicine?

An animal that actively hunts and kills other living animals for food is known as a?

Fruits like bananas that develop without seeds are referred to as?

The quartz crystal in a watch operates based on which scientific principle?

An oasis is a feature typically associated with what environment?

Why is yeast added to bread dough?

The Aurora Borealis, a natural light display in the northern hemisphere, is caused by radiation from the?

What type of harmful radiation does the ozone layer protect us from?

Which of the following is classified as a non-metallic mineral?

Sedimentary rocks are typically characterized as being?

What is the function of a moderator within a nuclear reactor?

Which layer of the atmosphere facilitates radio communication?

What kind of fuel is utilized in a Fast Breeder Reactor?

What is the primary cause of monsoons?

What does the term 'Blue Shift' signify in astronomy?

A radioactive element has a half-life of 8 days. How much time will pass for it to decrease from 10 mg to 5 mg?

How many spark plugs are required in a diesel engine?

Where are most asteroids located?

How are television signals transformed into light signals?

What is the reason a total solar eclipse does not occur every new moon?

Which of these atmospheric layers enables radio transmissions?

Diamond, a highly valued gemstone, is made of what single element?

What is the term for the point in Earth's orbit when it is farthest from the sun, leading to summer in the northern hemisphere?

What is the field of Eugenics the study of?

Which constellation is considered the most brilliant and magnificent in the night sky?

What is the orbital period of the planet Mercury as it revolves around the sun?

Which of the following materials is the most elastic?

Bronze is an alloy created from which metals?

What does a hygrometer measure?

What is the chemical name for vinegar?

A deficiency in which vitamin leads to decreased hemoglobin production?

What is dry ice?

What are chemicals used for exterminating rats and mice called?

What is the term for the scientific study of the manners and customs of peoples?