Psf General Science Mcqs Lastest

1

A deficiency in which hormone leads to Addison's disease?

A

Antidiuretic Hormone

B

Luteinizing Hormone

C

Melanophore-stimulating Hormone

D

Adrenocorticotropic Hormone

2

For what discovery was Max Planck awarded the 1918 Nobel Prize in Physics?

A

The electron

B

Energy quanta

C

The photon

D

The positron

3

How do clocks moving at speeds near the speed of light behave?

A

They run faster.

B

They run slower.

C

Their speed matches the speed of light.

D

They have zero velocity.

4

What are the three primary elements required for the healthy growth of plants?

A

Nitrogen, Phosphorus, Potassium

B

Nitrogen, Carbon, Phosphorus

C

Nitrogen, Potassium, Carbon

D

Nitrogen, Sulfur, Phosphorus

5

Which of these nations does the equator pass through?

A

Kenya

B

Malaysia

C

Malta

D

Pakistan

6

Through which process can copper be transformed into gold?

A

Artificial radioactivity

B

Heating

C

Electroplating

D

A chemical reaction

7

Which developmental stage is commonly referred to as the "toy age"?

A

Early childhood

B

Late childhood

C

Babyhood

D

All of the above

8

Which bacterium is instrumental in the production of yogurt?

A

Escherichia Coli

B

Staphylococcus aureus

C

Lactobacillus

D

All of the mentioned

9

Which telescope is expected to be the world's most powerful when it is completed in 2029?

A

James Webb 5.0 Telescope

B

Giant Magellan Space Telescope

C

The Vainu Bappu Telescope

D

Hubble Space Telescope 2.0

10

What is the name of the bacterium responsible for causing Lyme Disease?

A

Escherichia Coli

B

Staphylococcus aureus

C

Borrelia burgdorferi

D

None of the above

11

What elements constitute a balanced diet?

A

Carbohydrates and Fats

B

Proteins and Water

C

Vitamins and Minerals

D

All of the above

12

Which of the following are examples of monosaccharides?

A

Glucose

B

Galactose

C

Fructose

D

All of the above

13

How many categories of nutrients exist?

A

One

B

Two

C

Three

D

None of the above

14

What is the balanced diet formula recommended by the World Health Organization?

A

58% Carbohydrates, 12% Proteins, 30% Fats

B

Minerals, Proteins, and Fats

C

Fats, Proteins, and Minerals

D

None of the above

15

What are considered the primary building blocks of the body?

A

Carbohydrates

B

Proteins

C

Fats

D

None of the above

16

Which cellular organelle is known as the "powerhouse" of the cell?

A

Mitochondria

B

Vesicles

C

Lungs

D

Liver

17

What do plants do at night when photosynthesis ceases?

A

Absorb Carbon Dioxide

B

Release Oxygen

C

Release Carbon Dioxide

D

None of the above

18

What is the name of the device that converts alternating current (AC) to direct current (DC)?

A

Anemometer

B

Battery

C

Galvanometer

D

Rectifier

19

Halley's Comet, a short-period comet visible from Earth every 72-80 years, was last seen in 1986. When is its next expected appearance?

A

Mid-2065

B

Mid-2061

C

Mid-2040

D

None of the above

20

What is considered the fourth state of matter?

A

Water

B

Salts

C

Vapors

D

Plasma

21

Which element makes up approximately 50% of the Earth's crust, including its waters and atmosphere?

A

Oxygen

B

Carbon Dioxide

C

Silicon

D

Clay

22

The emission of which substances into the atmosphere is the primary cause of acid rain?

A

Sulfur Dioxide and Potassium Nitrate

B

Sulfur and Charcoal

C

Nitrogen Oxide and Potassium Nitrate

D

Sulfur Dioxide and Nitrogen Oxide

23

Typically, what level of damage is caused by wind speeds of 10-13 kph?

A

Little to no damage

B

Significant damage

C

Severe damage

D

Extreme damage

24

What percentage of the Earth's surface is covered by water?

A

61%

B

67%

C

71%

D

76%

25

Who is regarded as the originator of the study of meteorology?

A

Aristotle

B

Plato

C

Einstein

D

Newton

26

Wind energy is a form of which type of energy?

A

Potential

B

Transverse

C

Kinetic

D

Mechanical

27

In what units is the energy content of food typically measured?

A

Joules

B

Calories

C

Teslas

D

Proteins

28

What elements are natural fats and oils primarily composed of?

A

Carbon, Hydrogen, and Oxygen

B

Carbon, Hydrogen, and Nitrogen

C

Carbon, Oxygen, and Nitrogen

D

Hydrogen, Oxygen, and Nitrogen

29

What is the origin of the oxygen released during photosynthesis?

A

Water

B

Salts

C

Minerals

D

Glucose

30

What instrument is used for measuring the speed of the wind?

A

Anemometer

B

Barometer

C

Hydrometer

D

Hygrometer

31

Which gas is commonly referred to as "laughing gas"?

A

Carbon Dioxide

B

Sulfur Dioxide

C

Nitrous Oxide

D

Sodium Oxide

32

Which foods are considered good sources of iodine?

A

Green leafy vegetables

B

Seeds

C

Fresh vegetables and fruits

D

Seafood

33

What are some good sources of Vitamin C?

A

Green leafy vegetables

B

Seeds

C

Fresh vegetables and fruits

D

Seafood

34

Which foods are rich in Vitamin B Complex?

A

Green leafy vegetables

B

Seeds

C

Fresh vegetables and fruits

D

Seafood

35

What are considered good dietary sources of Vitamin A?

A

Green leafy vegetables

B

Seeds

C

Fresh vegetables and fruits

D

Seafood

36

What is the SI unit for heat?

A

Watt

B

Volt

C

Joule

D

Newton

37

Diamond is an allotrope of which element?

A

Carbon

B

Hydrogen

C

Nitrogen

D

Silicon

38

What is the approximate volume percentage of Carbon Dioxide in the atmosphere?

A

0.039%

B

3.9%

C

13%

D

30%

39

What does the field of meteorology study?

A

Seasons

B

The atmosphere

C

Air and sounds

D

Winds and clouds

40

Which element is crucial for the proper development of teeth?

A

Iodine

B

Copper

C

Fluorine

D

Iron

41

A deficiency in which mineral can lead to a loss of appetite and stunted growth?

A

Zinc

B

Iodine

C

Copper

D

Iron

42

Carrots are a rich source of which vitamin?

A

Vitamin A

B

Vitamin B

C

Vitamin C

D

Vitamin D

43

In which part of the digestive system is the digestion of food finalized?

A

Small intestine

B

Large intestine

C

Stomach

D

Liver

44

What substance is commonly known as Dry Ice?

A

Solid Oxygen

B

Solid Carbon Dioxide

C

Solid Hydrogen

D

Solid Nitrogen

45

What is the standard international unit for measuring electric current?

A

Coulomb

B

Ampere

C

Volt

D

Watt

46

What is a biosensor typically used to measure?

A

Blood glucose level

B

The body's pH value

C

The amount of hemoglobin

D

Salinity in urine

47

As per the Big Bang Theory, how many billion years ago did the Universe come into existence?

A

10 to 20

B

20 to 30

C

30 to 40

D

40 to 50

48

How many planets are visible from Earth without the aid of a telescope?

A

Three

B

Four

C

Five

D

Six

49

Which planet acts as Earth's "bodyguard" by deflecting many comets and asteroids?

A

Mars

B

Saturn

C

Uranus

D

Jupiter

50

On which planet can the Great Red Spot be found?

A

Saturn

B

Venus

C

Mars

D

Jupiter

51

The salinity of seawater is measured by the quantity of common salt (Sodium Chloride) present in what amount of seawater?

A

1 gram

B

10 grams

C

1 kilogram

D

10 kilograms

52

Which planet is most easily seen from Earth?

A

Mercury

B

Venus

C

Mars

D

Jupiter

53

Where in the body is urine produced?

A

Kidneys

B

Lungs

C

Large intestine

D

Liver

54

During the night, what do plants take in and what do they release?

A

Oxygen and release Carbon dioxide

B

Carbon dioxide and release Oxygen

C

Oxygen and release Carbon monoxide

D

Carbon monoxide and release Oxygen

55

An oxidation reaction in chemistry involves what?

A

Gaining of electrons

B

Losing of electrons

C

Gaining of protons

D

Losing of protons

56

What does the acronym GPS stand for?

A

Global Poles System

B

Global PolySiliconium Store

C

Global Positioning System

D

Global Position Structure

57

What type of orbits do comets typically have?

A

Elliptical

B

Highly elliptical

C

Circular

D

Parabolic

58

Which planet orbits the Sun at the fastest speed?

A

Jupiter

B

Venus

C

Mars

D

Mercury

59

What is the closest planet to Earth?

A

Venus

B

Mercury

C

Mars

D

Moon

60

At extremely low temperatures, which of the following bodies of water would be the last to freeze?

A

River water

B

Canal water

C

Seawater

D

Lake water

61

In cold countries during winter, what substance is used on icy roads to melt the ice?

A

Salt

B

Chlorine

C

Carbon dioxide

D

Water

62

What is the liquid component of blood called?

A

Plasma

B

Platelets

C

Blood cells

D

None of the above

63

What is the typical lifespan of a white blood cell?

A

1 to 5 days

B

3 to 7 days

C

4 to 8 days

D

5 to 21 days

64

What type of waves are sound waves?

A

Transverse

B

Electromagnetic

C

Longitudinal

D

None of the above

65

Which instrument is utilized for measuring extremely high temperatures?

A

Pyroscope

B

Pyrometer

C

Seismograph

D

Xylometer

66

Into how many colors does white light separate when it passes through a prism?

A

Five

B

Six

C

Seven

D

Eight

67

Which of the following statements about sound is correct?

A

Sound cannot travel through a vacuum

B

Sound is unable to travel through gases

C

Sound is unable to travel through liquids

D

Sound is unable to travel through solids

68

What is the full form of CNG?

A

Converted Natural Gas

B

Conduced Natural Gas

C

Conducted Natural Gas

D

Compressed Natural Gas

69

Which of the options listed is not an electrical conductor?

A

Aluminum

B

Gold

C

Graphite

D

All of these are conductors

70

What type of lens does a camera use to create an image?

A

A convex lens

B

A concave lens

C

A condenser lens

D

None of the above

71

What is the SI unit for pressure?

A

Pascal

B

Joule

C

Tesla

D

Henry

72

What is the densest naturally occurring substance on Earth?

A

Platinum

B

Copper

C

Steel

D

Osmium

73

Approximately how many liters of air does the human body inhale daily?

A

5,000 to 10,000

B

10,000 to 15,000

C

15,000 to 20,000

D

20,000 to 25,000

74

A lack of Vitamin D can lead to what condition?

A

Night blindness

B

Rickets

C

Scurvy

D

Hair loss

75

What is the most common element found in the Earth's crust?

A

Oxygen

B

Hydrogen

C

Carbon Dioxide

D

Silicon

76

Which element is the most plentiful throughout the universe?

A

Oxygen

B

Hydrogen

C

Carbon Dioxide

D

Silicon

77

What is the approximate blood volume of an average adult in liters?

A

Four

B

Five

C

Six

D

Seven

78

How is the Sun classified?

A

A star

B

A planet

C

An asteroid

D

A meteor

79

What gas is typically used as a coolant in refrigerators?

A

Nitrogen

B

Carbon dioxide

C

Methane

D

Tetrafluoroethane

80

What is a device that transforms chemical energy into electrical energy called?

A

A motor

B

A generator

C

A moving-coil meter

D

A battery

81

Who is credited with the discovery of radioactivity?

A

Kelvin

B

Thomson

C

Rutherford

D

Becquerel

82

If the volume of a fixed mass of gas is decreased at a constant temperature, what will happen to the pressure?

A

Also decrease

B

Increase

C

Remain constant

D

None of the above

83

What is the average lifespan of a red blood cell in days?

A

60

B

120

C

180

D

240

84

A lack of Vitamin A can cause which condition?

A

Night blindness

B

Rickets

C

Scurvy

D

Hair loss

85

Which type of lens can correct the vision defect known as long-sightedness?

A

Concave

B

Convex

C

Diverging

D

None of the above

86

A severe lack of Vitamin D leads to what condition?

A

Scurvy

B

Rickets

C

Night blindness

D

None of the above

87

What is the most distant planet from the Sun in our solar system?

A

Mercury

B

Pluto

C

Neptune

D

Uranus

88

Who is credited with discovering the planet Uranus?

A

William Caxton

B

John Davis

C

Herschel

D

Shelley

89

Which of the following is an eye disease?

A

Trachoma

B

Glaucoma

C

Cataract

D

All of the above

90

How many distinct layers does the Sun consist of?

A

Six

B

Four

C

Seven

D

Three

91

If Earth's mass were to double while its radius stayed the same, what would be the effect on the escape velocity?

A

It would stay unchanged

B

It would increase by a factor of $ \sqrt{2} $

C

It would become twice as large

D

It would decrease by a factor of $ \sqrt{2} $

92

To escape a celestial body's gravitational pull, what must be true about an object's kinetic energy relative to the body's gravitational potential energy?

A

Less than the body's gravitational potential energy

B

Equal to the body's gravitational potential energy

C

Greater than the body's gravitational potential energy

D

None of the above

93

Which statement regarding escape velocity is accurate?

A

Escape velocity does not depend on the planet's mass

B

Escape velocity does not depend on the escaping object's mass

C

Escape velocity reduces as the planet's radius increases

D

The shape of the planet affects escape velocity

94

How does the escape velocity on the Moon compare to that on Earth?

A

Lower than Earth's because the Moon has less mass and a smaller radius

B

Higher than Earth's because of its smaller radius

C

Identical to Earth's since escape velocity is a universal constant

D

It varies depending on the time of day

95

What will happen to a rocket launched from Earth with a speed below the escape velocity?

A

Exit Earth's gravitational field

B

Go into an elliptical orbit around Earth

C

Return to Earth

D

Journey to another planet

96

What factors determine the escape velocity from a celestial body?

A

The mass of the escaping object

B

The radius of the planet or body

C

Both the mass and the radius of the planet or body

D

The rotational speed of the planet

97

What is the approximate escape velocity from the surface of Earth?

A

7.9 km/s

B

9.8 km/s

C

11.2 km/s

D

12.4 km/s

98

Between a pen and a house, which would require a greater velocity to escape Earth's gravity?

A

The pen needs a lower velocity

B

The house needs a higher velocity

C

Both require the same velocity

D

Neither

99

What is a 'magnetometer' used for measuring?

A

Air pressure on ships

B

Electromagnetic force in space equipment

C

Variations in the Earth's magnetic field

D

Shifts in ocean currents

100

The term 'cyborg,' frequently found in science fiction, refers to what?

A

A person whose biological functions are supported by artificial technology

B

A bionic human

C

A person with prosthetic or artificial body parts

D

All of the above

GENERAL SCIENCE MCQs

A deficiency in which hormone leads to Addison's disease?

For what discovery was Max Planck awarded the 1918 Nobel Prize in Physics?

How do clocks moving at speeds near the speed of light behave?

What are the three primary elements required for the healthy growth of plants?

Which of these nations does the equator pass through?

Through which process can copper be transformed into gold?

Which developmental stage is commonly referred to as the "toy age"?

Which bacterium is instrumental in the production of yogurt?

Which telescope is expected to be the world's most powerful when it is completed in 2029?

What is the name of the bacterium responsible for causing Lyme Disease?

What elements constitute a balanced diet?

Which of the following are examples of monosaccharides?

How many categories of nutrients exist?

What is the balanced diet formula recommended by the World Health Organization?

What are considered the primary building blocks of the body?

Which cellular organelle is known as the "powerhouse" of the cell?

What do plants do at night when photosynthesis ceases?

What is the name of the device that converts alternating current (AC) to direct current (DC)?

Halley's Comet, a short-period comet visible from Earth every 72-80 years, was last seen in 1986. When is its next expected appearance?

What is considered the fourth state of matter?

Which element makes up approximately 50% of the Earth's crust, including its waters and atmosphere?

The emission of which substances into the atmosphere is the primary cause of acid rain?

Typically, what level of damage is caused by wind speeds of 10-13 kph?

What percentage of the Earth's surface is covered by water?

Who is regarded as the originator of the study of meteorology?

Wind energy is a form of which type of energy?

In what units is the energy content of food typically measured?

What elements are natural fats and oils primarily composed of?

What is the origin of the oxygen released during photosynthesis?

What instrument is used for measuring the speed of the wind?

Which gas is commonly referred to as "laughing gas"?

Which foods are considered good sources of iodine?

What are some good sources of Vitamin C?

Which foods are rich in Vitamin B Complex?

What are considered good dietary sources of Vitamin A?

What is the SI unit for heat?

Diamond is an allotrope of which element?

What is the approximate volume percentage of Carbon Dioxide in the atmosphere?

What does the field of meteorology study?

Which element is crucial for the proper development of teeth?

A deficiency in which mineral can lead to a loss of appetite and stunted growth?

Carrots are a rich source of which vitamin?

In which part of the digestive system is the digestion of food finalized?

What substance is commonly known as Dry Ice?

What is the standard international unit for measuring electric current?

What is a biosensor typically used to measure?

As per the Big Bang Theory, how many billion years ago did the Universe come into existence?

How many planets are visible from Earth without the aid of a telescope?

Which planet acts as Earth's "bodyguard" by deflecting many comets and asteroids?

On which planet can the Great Red Spot be found?

The salinity of seawater is measured by the quantity of common salt (Sodium Chloride) present in what amount of seawater?

Which planet is most easily seen from Earth?

Where in the body is urine produced?

During the night, what do plants take in and what do they release?

An oxidation reaction in chemistry involves what?

What does the acronym GPS stand for?

What type of orbits do comets typically have?

Which planet orbits the Sun at the fastest speed?

What is the closest planet to Earth?

At extremely low temperatures, which of the following bodies of water would be the last to freeze?

In cold countries during winter, what substance is used on icy roads to melt the ice?

What is the liquid component of blood called?

What is the typical lifespan of a white blood cell?

What type of waves are sound waves?

Which instrument is utilized for measuring extremely high temperatures?

Into how many colors does white light separate when it passes through a prism?

Which of the following statements about sound is correct?

What is the full form of CNG?

Which of the options listed is not an electrical conductor?

What type of lens does a camera use to create an image?

What is the SI unit for pressure?

What is the densest naturally occurring substance on Earth?

Approximately how many liters of air does the human body inhale daily?

A lack of Vitamin D can lead to what condition?

What is the most common element found in the Earth's crust?

Which element is the most plentiful throughout the universe?

What is the approximate blood volume of an average adult in liters?

How is the Sun classified?

What gas is typically used as a coolant in refrigerators?