GENERAL SCIENCE MCQs

100 Questions TextBook
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