General Science MCQs for UDC and LDC Test
General Science mcqs for UDC and LDC test are very important for the Army, Navy, and Pakistan Air Force’s academic evaluations. These general science MCQs also applies to civilian branches like Upper Division Clerk (UDC) and Lower Division Clerk (LDC). These General Science MCQs (multiple-choice questions) for UDC and LDC are crucial for the science assessments used in the academic examinations for UDC and LDC jobs in all branches of the armed forces since they cover a broad variety of significant scientific subjects.
Candidates can improve their scientific knowledge and increase their chances of passing the very competitive tests given by the military companies by practicing these general science MCQs. The purpose of these general science MCQs (multiple-choice questions) is to provide candidates a thorough understanding of scientific principles so they can show their mastery of the subject.
General Science MCQs for UDC and LDC (Part-1)
Which of the following ways of expressing the concentration of a solution does not depend on temperature?
- A) Molarity
- B) Molality
- C) Normality
- D) Formality
(Correct answer: B) Molality
A substance that increases the efficiency of a catalyst is known as a:
- A) Catalyst
- B) Inhibitor
- C) Promoter
- D) Solvent
(Correct answer: C) Promoter
The amount of energy required for children aged between one and three years is:
- A) 50 kcal/kg/day
- B) 60 kcal/kg/day
- C) 70 kcal/kg/day
- D) 80 kcal/kg/day
(Correct answer: D) 80 kcal/kg/day
According to the definition of 1 kWh, a 100-watt bulb consumes one unit of electricity in:
- A) 5 hours
- B) 8 hours
- C) 10 hours
- D) 12 hours
(Correct answer: C) 10 hours
In eye donation, which part of the donor’s eye is utilized?
- A) Retina
- B) Lens
- C) Cornea
- D) Iris
(Correct answer: C) Cornea
The ‘stone’ formed in the human kidney consists mostly of:
- A) Uric acid
- B) Struvite
- C) Calcium oxalate
- D) Cystine
(Correct answer: C) Calcium oxalate
Approximately how many times each day do our heart valves open and close normally?
- A) 50,000
- B) 75,000
- C) 1,00,000
- D) 1,25,000
(Correct answer: C) 1,00,000
What type of weathering takes place on the valley side above the surface of a glacier?
- A) Freeze-thaw
- B) Exfoliation
- C) Chemical
- D) Plucking
(Correct answer: D) Plucking
Rainfall related to mountains is called:
- A) Cyclonic rainfall
- B) Convectional rainfall
- C) Orographic rainfall
- D) Frontal rainfall
(Correct answer: C) Orographic rainfall
What is meant by “Equinox”?
- A) The time when the sun is at its highest point
- B) The time when the sun is at its lowest point
- C) A “nearly” equal amount of daylight and darkness at all latitudes
- D) The longest day of the year
(Correct answer: C) A “nearly” equal amount of daylight and darkness at all latitudes
The distance of longitude represents how many minutes of difference in time?
- A) 1 minute
- B) 2 minutes
- C) 4 minutes
- D) 8 minutes
(Correct answer: C) 4 minutes
Seasonal changes are primarily due to the:
- A) Tilt of the Earth’s axis
- B) Distance from the moon
- C) Rotation of the Earth
- D) Earth’s revolving around the sun
(Correct answer: D) Earth’s revolving around the sun
The largest latitude circle on Earth is the:
- A) Arctic Circle
- B) Tropic of Cancer
- C) Equator
- D) Antarctic Circle
(Correct answer: C) Equator
The oldest barrage on the river Indus at Sukkur was built in:
- A) 1922
- B) 1932
- C) 1942
- D) 1952
(Correct answer: B) 1932
Afternoon rains in the equatorial region are the result of:
- A) Sea breeze
- B) Land breeze
- C) Convection currents
- D) Orographic uplift
(Correct answer: C) Convection currents
When warm air is lifted off the surface into a temperature depression, it is called:
- A) An occlusion
- B) A cold front
- C) A warm front
- D) A cyclone
(Correct answer: A) An occlusion
Water vapor turns into clouds in the atmosphere when:
- A) The temperature rises
- B) The air pressure drops
- C) The dew point is reached
- D) The air becomes dry
(Correct answer: C) The dew point is reached
General Science MCQs for UDC and LDC with Answers
General Science MCQs for UDC and LDC with answers are a great way to prepare for exams for those hoping to join the Pakistan Air Force, Army, Navy, or civilian branches such as UDC and LDC. These General Science MCQs multiple-choice questions for UDC and LDC include a wide variety of scientific subjects, such as biology, chemistry, and physics, which are essential to the science examinations used in the academic evaluations of UDC and LDC jobs in the armed services.
Candidates can improve their exam scores and deepen their comprehension of basic scientific concepts by concentrating on these general science MCQs (multiple-choice questions). These general science MCQs (multiple-choice questions) are included in the exam preparation materials because they are important and pertinent to the military forces’ evaluations.
General Science MCQs for UDC and LDC (Part-2)
Weather describes the condition of the:
- A) Soil
- B) Atmosphere
- C) Ocean
- D) Land
(Correct answer: B) Atmosphere
The Stevenson screen contains all of these EXCEPT:
- A) Dry bulb thermometer
- B) Wet bulb thermometer
- C) Barometer
- D) Hygrometer
(Correct answer: B) Wet bulb thermometer
A wind that reverses seasonally is known as a:
- A) Trade wind
- B) Westerly
- C) Polar wind
- D) Monsoon
(Correct answer: D) Monsoon
A canyon is a large form of a:
- A) Valley
- B) Hill
- C) Plateau
- D) Gorge
(Correct answer: D) Gorge
Which statement about the troposphere is not true?
- A) Temperatures decrease with altitude in the troposphere
- B) The troposphere is the lowest layer of the atmosphere
- C) Weather occurs in the troposphere
- D) Temperatures increase with altitude in the troposphere
(Correct answer: D) Temperatures increase with altitude in the troposphere
A bore is caused by:
- A) High pressure areas
- B) Rising tide while meeting river currents
- C) Low temperatures
- D) Wind patterns
(Correct answer: B) Rising tide while meeting river currents
The strength of wave action depends on all these EXCEPT:
- A) Wind speed
- B) Duration of wind
- C) Fetch (distance of open water)
- D) Currents in the sea
(Correct answer: D) Currents in the sea
The areas around the North and South Poles within the Polar Circles are called:
- A) The Temperate Zone
- B) The Tropical Zone
- C) The Frigid Zone
- D) The Subtropical Zone
(Correct answer: C) The Frigid Zone
In the composition of the Earth, aluminum constitutes:
- A) 5.00%
- B) 10.00%
- C) 20.30%
- D) 30.00%
(Correct answer: C) 20.30%
“Rancidity produced in butter can be decreased by adding quinoline to the butter.” This statement shows that:
- A) Quinoline is an antioxidant
- B) Quinoline is a preservative
- C) Quinoline is an inhibitor
- D) Quinoline is a flavoring agent
(Correct answer: C) Quinoline is an inhibitor
Gulf streams are caused by:
- A) Ocean pressure
- B) Wind patterns
- C) Earth’s rotation
- D) Water temperature variations
(Correct answer: B) Wind patterns
The production of rubber trees is better adapted to areas where the climate is:
- A) Cool and dry
- B) Warm and humid
- C) Cold and dry
- D) Warm and arid
(Correct answer: B) Warm and humid
There are three types of plate boundaries: Divergent, Convergent, and:
- A) Transform
- B) Subductive
- C) Divergent
- D) Collisional
(Correct answer: A) Transform
The speed of light with the rise in the temperature of the medium:
- A) Increases
- B) Decreases
- C) Remains the same
- D) Becomes erratic
(Correct answer: C) Remains the same
The AIDS virus is:
- A) Single-stranded RNA
- B) Single-stranded DNA
- C) Double-stranded RNA
- D) Double-stranded DNA
(Correct answer: A) Single-stranded RNA
Vitamin C gets destroyed on heating. Which vitamin is this?
- A) Vitamin A
- B) Vitamin B12
- C) Vitamin C
- D) Vitamin D
(Correct answer: C) Vitamin C
Cow milk is a rich source of:
- A) Vitamin A
- B) Vitamin B12
- C) Vitamin C
- D) Vitamin D
(Correct answer: B) Vitamin B12
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Most Repeated General Science MCQs
In the academic exams administered by the Pakistan Air Force, Army, Navy, and civilian branches of LDC and UDC, General science MCQs multiple-choice questions are crucial. These most repeated general science MCQs span a broad spectrum of scientific subjects, including astronomy, geology, and environmental science. These subjects are important parts of the science exams that are given in the academic evaluations of UDC and LDC jobs in the armed forces.
Candidates can improve their performance on the exams and increase their scientific knowledge by using these general science MCQs multiple-choice questions in their test preparation. The availability of these general science MCQs (multiple-choice questions) guarantees that prospective applicants are ready to do well on the scientific portions of the exams.
General Science MCQs for UDC and LDC (Part-3)
Mercury is also known as:
- A) QuickSilver
- B) WhiteGold
- C) RedMetal
- D) BlueSilver
(Correct answer: A) QuickSilver
Which type of soil is treated with gypsum to make it suitable for cropping?
- A) Sandy soil
- B) Clay soil
- C) Alkaline soil
- D) Peaty soil
(Correct answer: C) Alkaline soil
Phobos is the natural satellite of which planet?
- A) Venus
- B) Earth
- C) Mars
- D) Jupiter
(Correct answer: C) Mars
Galvanized iron sheets have a coating of:
- A) Lead
- B) Tin
- C) Aluminum
- D) Zinc
(Correct answer: D) Zinc
Spinach leaves are a rich source of:
- A) Calcium
- B) Vitamin C
- C) Iron
- D) Magnesium
(Correct answer: C) Iron
The pollutant from motor car exhaust that causes mental disease is:
- A) Carbon monoxide
- B) Nitrogen dioxide
- C) Sulfur dioxide
- D) Lead
(Correct answer: D) Lead
The ratio of pure gold in 18-carat gold is:
- A) 50%
- B) 60%
- C) 75%
- D) 90%
(Correct answer: C) 75%
Which element is required for solar energy conversion?
- A) Silver
- B) Gold
- C) Silicon
- D) Platinum
(Correct answer: C) Silicon
An element that does not occur in nature but can be produced artificially is:
- A) Uranium
- B) Radon
- C) Plutonium
- D) Thorium
(Correct answer: C) Plutonium
Muscle fatigue is caused by the accumulation of:
- A) Uric acid
- B) Acetylcholine
- C) Lactic acid
- D) Creatine
(Correct answer: C) Lactic acid
The total energy of a revolving electron in an atom:
- A) Can be positive
- B) Can be negative
- C) Can be zero
- D) Can never be positive
(Correct answer: D) Can never be positive
The virus of AIDS affects the growth of:
- A) Red blood cells
- B) White blood cells
- C) Platelets
- D) T cells in blood
(Correct answer: D) T cells in blood
The vitamin which is generally excreted by humans in urine is:
- A) Vitamin A
- B) Vitamin D
- C) Vitamin C and B complex
- D) Vitamin K
(Correct answer: C) Vitamin C and B complex
Which metal occurs in a free state?
- A) Gold
- B) Silver
- C) Lead
- D) Copper
(Correct answer: C) Lead
Magnalium is an alloy of:
- A) Copper and Zinc
- B) Aluminum and Magnesium
- C) Aluminum and Copper
- D) Magnesium and Zinc
(Correct answer: B) Aluminum and Magnesium
By which process is copper refined?
- A) Electrolysis
- B) Smelting
- C) Roasting
- D) Leaching
(Correct answer: C) Roasting
In part of the eye lies the pigment that decides the color of a person’s eyes. This part is the:
- A) Retina
- B) Cornea
- C) Iris
- D) Lens
(Correct answer: C) Iris
Which is responsible for producing the color of human skin?
- A) Keratin
- B) Hemoglobin
- C) Melanin
- D) Collagen
(Correct answer: C) Melanin
100 Solved General Science MCQs
100 solved General science mcqs are very helpful for applicants in competitive exams like the Army, Navy, and Pakistan Air Force. This also applies to those who want to join the civilian branches of UDC and LDC. These General Science MCQs (multiple-choice questions) cover a wide range of scientific topics, including biology, ecology, and genetics. These topics are crucial for the science exams that are part of the academic evaluation process for UDC and LDC jobs in the armed services.
Candidates can boost their exam scores and gain a deeper comprehension of scientific ideas by concentrating on these general science MCQs (multiple-choice questions). These general science MCQs will increase their chances of landing the jobs they want.
General Science MCQs for UDC and LDC (Part-4)
Which vitamin can be synthesized by the liver?
- A) Vitamin A
- B) Vitamin B12
- C) Vitamin C
- D) Vitamin K
(Correct answer: D) Vitamin K
What are the basic purposes of dams?
- A) Flood control and irrigation
- B) Storage of water in a large reservoir
- C) Recreation and tourism
- D) Soil conservation
(Correct answer: B) Storage of water in a large reservoir
Which is the world’s largest mangrove forest?
- A) Amazon Rainforest
- B) Daintree Forest
- C) Sundarbans Forest
- D) Congo Basin
(Correct answer: C) Sundarbans Forest
Rocks formed out of layers of sediment bonded together are known as:
- A) Igneous rocks
- B) Metamorphic rocks
- C) Sedimentary rocks
- D) Volcanic rocks
(Correct answer: C) Sedimentary rocks
What is the name of the central part of the Earth?
- A) Crust
- B) Mantle
- C) Core
- D) Lithosphere
(Correct answer: C) Core
Evaporation from ice and snow is known as:
- A) Condensation
- B) Melting
- C) Sublimation
- D) Precipitation
(Correct answer: C) Sublimation
An ice mass that covers more than fifty thousand square kilometers of land area is classified as:
- A) Glacier
- B) Iceberg
- C) Ice sheet
- D) Snowfield
(Correct answer: C) Ice sheet
The pedosphere is the sum of:
- A) Atmosphere and hydrosphere
- B) Soil and water
- C) Lithosphere and biosphere
- D) Crust and mantle
(Correct answer: B) Soil and water
The sum of all ecosystems is classified as:
- A) Lithosphere
- B) Hydrosphere
- C) Biosphere
- D) Atmosphere
(Correct answer: C) Biosphere
The average salinity or ratio of salt per kilogram of ocean water is:
- A) 10 grams
- B) 20 grams
- C) 30 grams
- D) 35 grams
(Correct answer: D) 35 grams
The protein content in wheat is approximately:
- A) 8%
- B) 10%
- C) 12%
- D) 15%
(Correct answer: C) 12%
Alzheimer’s disease in human beings is characterized by the degeneration of:
- A) Muscle cells
- B) Blood cells
- C) Nerve cells
- D) Bone cells
(Correct answer: C) Nerve cells
The protein content of the edible portion of an egg is:
- A) 10%
- B) 12%
- C) 13.3%
- D) 15%
(Correct answer: C) 13.3%
Vitamin A is found in:
- A) Fruits
- B) Green vegetables
- C) Dairy products
- D) Meats
(Correct answer: B) Green vegetables
When passing through foodstuff, X-rays can kill the:
- A) Viruses
- B) Bacteria
- C) Parasites
- D) Fungi
(Correct answer: B) Bacteria
An intrinsic semiconductor is also known as a:
- A) Doped conductor
- B) Pure conductor
- C) Alloyed semiconductor
- D) Impure semiconductor
(Correct answer: B) Pure conductor
The diameter of the Sun is approximately:
- A) 1 lakh kilometers
- B) 5 lakh kilometers
- C) 10 lakh kilometers
- D) 14 lakh kilometers
(Correct answer: D) 14 lakh kilometers
What is the correct order of the solar system starting from the Sun?
- A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
- B) Venus, Earth, Mars, Mercury, Jupiter, Saturn, Uranus, Neptune
- C) Earth, Venus, Mercury, Mars, Saturn, Jupiter, Neptune, Uranus
- D) Mars, Earth, Venus, Mercury, Saturn, Jupiter, Uranus, Neptune
(Correct answer: A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
General Science MCQs for UDC and LDC with Answers
General Science MCQs (multiple-choice questions) are very important in the Army, Navy, Pakistan Air Force, and civilian UDC and LDC academic exams. These general science mcqs (multiple-choice questions) include a broad spectrum of scientific subjects, such as biology, chemistry, and physics, which are essential to the science exams given in the academic evaluations for UDC and LDC jobs in the armed forces.
Candidates can improve their test scores and solidify their scientific knowledge by using these general science mcqs multiple-choice questions as part of their exam preparation. In order to help prospective candidates succeed in the scientific sections of the exams and land their desired positions in the military companies, these general science MCQs multiple-choice questions must be included in the test preparation materials.
General Science MCQs for UDC and LDC (Part-5)
The Big Bang was an explosion that occurred:
- A) 5 billion years ago
- B) 10 billion years ago
- C) 15 billion years ago
- D) 20 billion years ago
(Correct answer: C) 15 billion years ago
The Big Bang theory explains the:
- A) Formation of stars
- B) Origin of the Universe
- C) Evolution of galaxies
- D) Formation of the solar system
(Correct answer: B) Origin of the Universe
Approximately how many galaxies are there in the Universe?
- A) 10 billion
- B) 50 billion
- C) 100 billion
- D) 200 billion
(Correct answer: C) 100 billion
The study of the Universe is known as:
- A) Astronomy
- B) Astrophysics
- C) Cosmology
- D) Geology
(Correct answer: C) Cosmology
Hydrogen peroxide (H2O2) is:
- A) Non-toxic to tissues
- B) Poisonous to tissues
- C) Useful as a food additive
- D) Safe for skin contact
(Correct answer: B) Poisonous to tissues
Which of the following is a mammal?
- A) Duck-billed platypus
- B) Komodo dragon
- C) Crocodile
- D) Penguin
(Correct answer: A) Duck-billed platypus
A man can survive without food for at least:
- A) 1 week
- B) 2 weeks
- C) 1 month
- D) 2 months
(Correct answer: C) 1 month
Places experiencing equal impact of an earthquake are called:
- A) Seismic zones
- B) Fault lines
- C) Seismic lines
- D) Epicenters
(Correct answer: C) Seismic lines
The borderline which separates outer space from Earth’s atmosphere is known as the:
- A) Van Allen belt
- B) Karman line
- C) Troposphere
- D) Stratosphere
(Correct answer: B) Karman line
The second highest layer of Earth’s atmosphere is the:
- A) Troposphere
- B) Stratosphere
- C) Mesosphere
- D) Thermosphere
(Correct answer: C) Mesosphere
The height of the mesosphere layer in the atmosphere is approximately:
- A) 45 km
- B) 55 km
- C) 70 km
- D) 85 km
(Correct answer: D) 85 km
Bromine is a:
- A) Gas
- B) Solid
- C) Red-brown liquid
- D) Colorless liquid
(Correct answer: C) Red-brown liquid
The variety of coal in which the deposit contains recognizable traces of the original plant material is:
- A) Anthracite
- B) Bituminous
- C) Lignite
- D) Peat
(Correct answer: D) Peat
The property of a substance to absorb moisture from the air on exposure is called:
- A) Absorption
- B) Deliquescence
- C) Hygroscopy
- D) Sublimation
(Correct answer: B) Deliquescence
An extremely small piece of silicon on which integrated circuits are implanted is called a:
- A) Microchip
- B) Card reader
- C) Transistor
- D) Semiconductor
(Correct answer: A) Microchip
The Earth is closest to the Sun every year in early:
- A) January, when it’s winter for the Northern Hemisphere
- B) April, during spring in the Northern Hemisphere
- C) July, during summer for the Northern Hemisphere
- D) October, during fall in the Northern Hemisphere
(Correct answer: A) January, when it’s winter for the Northern Hemisphere
What is it called when the Earth is closest to the Sun?
- A) Aphelion
- B) Perihelion
- C) Solstice
- D) Equinox
(Correct answer: B) Perihelion
Circadian rhythm refers to:
- A) Seasonal changes
- B) Lunar cycles
- C) Human body cycles
- D) Solar cycles
(Correct answer: C) Human body cycles
Fuzzy logic is a part of:
- A) Chemistry
- B) Biology
- C) Computer science
- D) Physics
(Correct answer: C) Computer science
Periodontics deals with:
- A) Oral surgery
- B) Orthodontics
- C) Tooth decay
- D) Dentistry
(Correct answer: D) Dentistry
Conditions related to smoking that involve damage to the alveoli sacs is called:
- A) Asthma
- B) Emphysema
- C) Bronchitis
- D) Pneumonia
(Correct answer: B) Emphysema
Smoking cigarettes impacts the red blood cells by:
- A) Increasing their ability to carry oxygen
- B) Decreasing their ability to carry oxygen
- C) Improving their function
- D) Making them more resistant to disease
(Correct answer: B) Decreasing their ability to carry oxygen
What is the addictive drug in tobacco?
- A) Caffeine
- B) Nicotine
- C) Cocaine
- D) Heroin
(Correct answer: B) Nicotine
Which chemical is not found in tobacco smoke?
- A) Formaldehyde
- B) Acetone
- C) Benzene
- D) Nail polish remover
(Correct answer: D) Nail polish remover
The atmospheric greenhouse effect is produced mainly by the:
- A) Absorption and re-emission of infrared radiation by the atmosphere
- B) Reflection of sunlight by clouds
- C) Release of carbon dioxide from oceans
- D) Ozone layer absorbing UV radiation
(Correct answer: A) Absorption and re-emission of infrared radiation by the atmosphere
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