General Science 100 MCQ BPSC Exam

General Science 100 MCQ BPSC Exam. These 100 Multiple Choice Question covers a broad range of general science topics relevant to the BPSC exam. Within physics, MCQs on mechanics, heat, sound, light, electricity and magnetism, and modern physics concepts. Chemistry questions ranged from basic concepts and inorganic chemistry to organic and environmental applications. The biology section explored botany, zoology, human biology, genetics, evolution, and ecology. Finally, in science and technology, MCQs on recent science developments, advancements in India, and initiatives specific to Bihar.

I. Physics – General Science 100 MCQ BPSC Exam

A. Mechanics and Properties of Matter

Question 1: A ball is thrown vertically upwards. Neglecting air resistance, which property of the ball remains constant throughout its motion?

A. Velocity

B. Acceleration

C. Kinetic Energy

D. Potential Energy

Question 2:  Which of the following is NOT a unit of pressure?

A. Pascal (Pa)

B. Newton (N)

C. Atmosphere (atm)

D. Bar

Question 3:  A block of wood floats on water. What can you say about the density of the wood compared to the density of water?

A. The wood is denser than water.

B. The wood is less dense than water.

C. The wood has the same density as water.

D. Density is not relevant to floating.

Question 4: Two objects of different masses are dropped from the same height at the same time. Neglecting air resistance, which object will hit the ground first?

A. The heavier object

B. The lighter object

C. They will hit the ground at the same time

D. It depends on the shape of the objects

Question 5:  What is the principle behind hydraulic brakes in vehicles?

A. Archimedes’ Principle

B. Pascal’s Law

C. Bernoulli’s Principle

D. Newton’s Law of Gravitation

B. Heat and Thermodynamics

Question 6:  Which of the following is the best conductor of heat?

A. Wood

B. Plastic

C. Copper

D. Air

Question 7: What happens to the volume of a gas when its temperature increases at constant pressure?

A. The volume decreases.

B. The volume increases.

C. The volume remains the same.

D. The volume becomes zero.

Question 8:  Which of the following is an example of heat transfer by convection?

A. Warming your hands by a fire

B. A hot air balloon rising

C. Touching a hot stove

D. Sunlight warming the Earth

Question 9:  What is the primary mechanism of heat transfer in a vacuum?

A. Conduction

B. Convection

C. Radiation

D. Evaporation

Question 10:  The first law of thermodynamics is a statement of:

A. Conservation of momentum

B. Conservation of energy

C. Conservation of mass

D. Conservation of charge

C. Sound

Question 11:  The pitch of a sound wave is determined by its:

A. Amplitude

B. Frequency

C. Wavelength

D. Speed

Question 12:  What causes the Doppler effect?

A. The interference of sound waves

B. The reflection of sound waves

C. The relative motion between the source of sound and the observer

D. The absorption of sound waves

Question 13:  Sound waves cannot travel through:

A. Air

B. Water

C. A vacuum

D. Steel

D. Light

Question 14:  A convex lens:

A. Diverges light rays

B. Converges light rays

C. Reflects light rays

D. Absorbs light rays

Question 15:  What type of lens is used to correct nearsightedness (myopia)?

A. Convex lens

B. Concave lens

C. Bifocal lens

D. Plano-convex lens

Question 16:  The primary colors of light are:

A. Red, yellow, blue

B. Red, green, blue

C. Cyan, magenta, yellow

D. Black, white, gray

Question 17:  Which phenomenon demonstrates the wave nature of light?

A. Photoelectric effect

B. Diffraction

C. Blackbody radiation

D. Compton scattering

Question 18:  What is the function of the iris in the human eye?

A. To focus light on the retina

B. To control the amount of light entering the eye

C. To detect color

D. To protect the eye from injury

E. Electricity and Magnetism

Question 19:  What is the unit of electrical resistance?

A. Volt

B. Ampere

C. Ohm

D. Watt

Question 20:  In a series circuit, the current:

A. Is the same at all points

B. Varies at different points

C. Is zero

D. Is infinite

Question 21:  What happens when a magnet is cut in half?

A. It loses its magnetism.

B. It creates two magnets, each with a north and south pole.

C. It creates one north pole and one south pole.

D. It becomes a monopole.

Question 22:  Electromagnetic induction is the process of:

A. Generating electricity from magnetism

B. Generating magnetism from electricity

C. Converting electricity into heat

D. Converting magnetism into heat

F. Modern Physics

Question 23:  What is the charge of a proton?

A. Positive

B. Negative

C. Neutral

D. It depends on the element

Question 24:  Which type of radioactive decay emits an electron?

A. Alpha decay

B. Beta decay

C. Gamma decay

D. Neutron emission

Question 25:  Einstein’s theory of special relativity deals with:

A. The relationship between mass and energy

B. The behavior of objects in gravitational fields

C. The nature of black holes

D. The origin of the universe

II. Chemistry – General Science 100 MCQ BPSC Exam

A. Basic Concepts

Question 26: What is the smallest unit of an element that retains the chemical properties of that element?

A. Atom

B. Molecule

C. Compound

D. Ion

Question 27:  Which of the following is a chemical change?

A. Melting ice

B. Boiling water

C. Burning wood

D. Cutting paper

Question 28:  What is the pH of a neutral solution?

A. 0

B. 7

C. 14

D. 10

Question 29: What is the chemical symbol for gold?

A. Ag

B. Au

C. Fe

D. Hg

Question 30: Which of the following is NOT a state of matter?

A. Solid

B. Liquid

C. Gas

D. Vacuum

B. Inorganic Chemistry

Question 31: Which element is the most abundant in the Earth’s crust?

A. Oxygen

B. Silicon

C. Aluminum

D. Iron

Question 32:  What is the chemical formula for water?

A. H2O

B. CO2

C. NaCl

D. O2

Question 33:  Which of the following elements is a noble gas?

A. Sodium

B. Chlorine

C. Helium

D. Oxygen

Question 34:  What is the process of coating iron with zinc to prevent rusting called?

A. Galvanization

B. Alloying

C. Electrolysis

D. Oxidation

Question 35:  Which of the following is a property of alkali metals?

A. They are highly reactive.

B. They are poor conductors of electricity.

C. They have high melting points.

D. They are non-metals.

Question 36:  What is the charge of a chloride ion?

A. +1

B. -1

C. +2

D. -2

Question 37:  Which of the following is an example of an alloy?

A. Gold

B. Silver

C. Bronze

D. Diamond

C. Organic Chemistry

Question 38:  What is the main component of natural gas?

A. Methane

B. Ethane

C. Propane

D. Butane

Question 39:  Which of the following is the functional group for alcohols?

A. -COOH

B. -CHO

C. -OH

D. -NH2

Question 40:  What is the general formula for alkanes?

A. CnH2n

B. CnH2n+2

C. CnH2n-2

D. CnHn

Question 41:  Which of the following is an unsaturated hydrocarbon?

A. Ethane

B. Propane

C. Butene

D. Pentane

Question 42:  What is the process of converting vegetable oils into solid fats called?

A. Hydrogenation

B. Saponification

C. Fermentation

D. Polymerization

Question 43:  Which of the following is a polymer?

A. Glucose

B. Ethanol

C. Polyethylene

D. Acetic acid

D. Environmental Chemistry

Question 44:  Which of the following is a major air pollutant?

A. Nitrogen

B. Oxygen

C. Carbon dioxide

D. Water vapor

Question 45:  What is the main cause of acid rain?

A. Volcanic eruptions

B. Burning of fossil fuels

C. Deforestation

D. Agricultural activities

Question 46:  What is the process of enriching a water body with nutrients, leading to excessive algal growth, called?

A. Eutrophication

B. Biomagnification

C. Bioaccumulation

D. Bioremediation

Question 47:  Which of the following is a greenhouse gas?

A. Methane

B. Oxygen

C. Nitrogen

D. Argon

Question 48:  What is the primary source of ozone layer depletion?

A. Carbon dioxide emissions

B. Chlorofluorocarbons (CFCs)

C. Methane emissions

D. Deforestation

Question 49:  What is the process of removing salt from seawater called?

A. Desalination

B. Filtration

C. Distillation

D. Precipitation

Question 50:  Which of the following is a biodegradable waste?

A. Plastic

B. Glass

C. Food scraps

D. Metal

III. Biology – General Science 100 MCQ BPSC Exam

A. Botany

Question 51:  What is the process by which plants convert sunlight into chemical energy?

A. Photosynthesis

B. Respiration

C. Transpiration

D. Pollination

Question 52:  Which part of the plant is responsible for absorbing water and minerals from the soil?

A. Leaves

B. Stem

C. Roots

D. Flowers

Question 53:  What is the function of the xylem in plants?

A. To transport water and minerals from roots to leaves

B. To transport food from leaves to other parts of the plant

C. To store food

D. To provide support

Question 54:  Which of the following is NOT a type of plant tissue?

A. Dermal tissue

B. Vascular tissue

C. Ground tissue

D. Muscle tissue

Question 55:  What is the male reproductive part of a flower called?

A. Pistil

B. Stamen

C. Sepal

D. Petal

Question 56:  Which of the following is an example of a bryophyte?

A. Fern

B. Moss

C. Pine tree

D. Rose bush

B. Zoology

Question 57:  Which of the following animals is an invertebrate?

A. Fish

B. Bird

C. Reptile

D. Insect

Question 58:  What is the function of the respiratory system in animals?

A. To transport blood throughout the body

B. To break down food and absorb nutrients

C. To exchange gases with the environment

D. To remove waste products from the body

Question 59:  Which of the following is a cold-blooded animal?

A. Mammal

B. Bird

C. Reptile

D. Amphibian

Question 60: What is the process of transformation from an immature form to an adult form in insects called?

A. Metamorphosis

B. Migration

C. Hibernation

D. Adaptation

Question 61: Which of the following is an example of a mammal?

A. Snake

B. Frog

C. Whale

D. Shark

Question 62: What is the function of the gills in fish?

A. To extract oxygen from water

B. To regulate buoyancy

C. To detect movement in the water

D. To capture prey

C. Human Biology

Question 63: Which organ is responsible for pumping blood throughout the body?

A. Heart

B. Lungs

C. Liver

D. Kidney

Question 64: What is the function of the digestive system?

A. To break down food and absorb nutrients

B. To exchange gases with the environment

C. To remove waste products from the body

D. To fight off infections

Question 65: Which of the following is a component of the nervous system?

A. Brain

B. Stomach

C. Liver

D. Kidney

Question 66: What is the function of white blood cells in the human body?

A. To transport oxygen

B. To clot blood

C. To fight infections

D. To regulate hormones

Question 67: Which disease is caused by a deficiency of insulin?

A. Diabetes

B. Anemia

C. Asthma

D. Arthritis

Question 68: What is the main function of the kidneys?

A. To filter waste products from the blood

B. To produce hormones

C. To digest food

D. To store nutrients

D. Genetics and Evolution

Question 69: What is the basic unit of heredity?

A. Gene

B. Chromosome

C. DNA

D. RNA

Question 70: Which molecule carries the genetic information from DNA to the ribosomes?

A. mRNA

B. tRNA

C. rRNA

D. DNA polymerase

Question 71: What is the process of creating a copy of DNA called?

A. Replication

B. Transcription

C. Translation

D. Mutation

Question 72:  Who is credited with the theory of evolution by natural selection?

A. Charles Darwin

B. Gregor Mendel

C. Louis Pasteur

D. Albert Einstein

Question 73: What is the process by which organisms with favorable traits are more likely to survive and reproduce?

A. Natural selection

B. Genetic drift

C. Gene flow

D. Mutation

E. Ecology and Environment

Question 74: What is a community of interacting organisms and their physical environment called?

A. Ecosystem

B. Population

C. Biosphere

D. Habitat

Question 75:  What is the role of decomposers in an ecosystem?

A. To produce food through photosynthesis

B. To break down dead organisms and recycle nutrients

C. To consume other organisms for energy

D. To control populations of other organisms

Question 76:  What is the variety of life in a particular habitat or ecosystem called?

A. Biodiversity

B. Biomass

C. Biomagnification

D. Bioaccumulation

Question 77:  Which of the following is a major threat to biodiversity?

A. Habitat loss

B. Conservation efforts

C. Sustainable practices

D. Ecotourism

Question 78:  What is the process by which certain pollutants become more concentrated as they move up the food chain?

A. Biomagnification

B. Bioaccumulation

C. Eutrophication

D. Acidification

IV. Science and Technology – General Science 100 MCQ BPSC Exam

A. Recent Developments in Science and Technology

Question 79:  What is the field of science that deals with the manipulation of matter on an atomic and molecular scale?

A. Nanotechnology

B. Biotechnology

C. Information technology

D. Space technology

Question 80:  Which of the following is an application of biotechnology?

A. Developing genetically modified crops

B. Designing new computer processors

C. Launching satellites into space

D. Creating new materials with specific properties

Question 81:  What is the technology that allows computers to perform tasks that normally require human intelligence?

A. Artificial intelligence (AI)

B. Cloud computing

C. Internet of Things (IoT)

D. Virtual reality (VR)

Question 82:  Which of the following is a recent development in space technology?

A. Reusable rockets

B. The invention of the telescope

C. The first human landing on the moon

D. The discovery of Pluto

Question 83:  What is the technology that connects everyday objects to the internet, allowing them to collect and exchange data?

A. Internet of Things (IoT)

B. Cloud computing

C. Artificial intelligence (AI)

D. Virtual reality (VR)

Question 84:  Which of the following is an application of cloud computing?

A. Storing and accessing data over the internet

B. Developing new drugs

C. Manufacturing new materials

D. Launching satellites into space

B. Science and Technology in India

Question 85:  Which organization is responsible for India’s space program?

A. ISRO (Indian Space Research Organisation)

B. DRDO (Defence Research and Development Organisation)

C. BARC (Bhabha Atomic Research Centre)

D. CSIR (Council of Scientific and Industrial Research)

Question 86:  What was the name of India’s first satellite?

A. Aryabhata

B. Bhaskara

C. Rohini

D. INSAT

Question 87:  Which of the following is a major achievement of India’s space program?

A. Chandrayaan missions to the moon

B. Mangalyaan mission to Mars

C. Development of launch vehicles like PSLV and GSLV

D. All of the above

Question 88: Which organization is responsible for India’s nuclear program?

A. BARC (Bhabha Atomic Research Centre)

B. DRDO (Defence Research and Development Organisation)

C. ISRO (Indian Space Research Organisation)

D. CSIR (Council of Scientific and Industrial Research)

Question 89: What was the name of India’s first nuclear test?

A. Smiling Buddha

B. Shakti

C. Pokhran-I

D. Agni

Question 90: Which of the following is a nuclear power plant in India?

A. Tarapur Atomic Power Station

B. Kudankulam Nuclear Power Plant

C. Narora Atomic Power Station

D. All of the above

Question 91: What is the name of India’s indigenously developed ballistic missile?

A. Agni

B. Prithvi

C. Akash

D. Trishul

Question 92: Which Indian scientist is known as the “Father of the Indian nuclear program”?

A. Homi J. Bhabha

B. Vikram Sarabhai

C. A.P.J. Abdul Kalam

D. C.V. Raman

C. Science and Technology in Bihar

Question 93: Which of the following is a science and technology initiative in Bihar?

A. Establishment of the Nalanda University

B. Development of the Bihar State Biotechnology Policy

C. Promotion of IT parks and software development

D. All of the above

Question 94: What is the objective of the Bihar State Biotechnology Policy?

A. To promote research and development in biotechnology

B. To attract investment in the biotechnology sector

C. To create employment opportunities in the biotechnology sector

D. All of the above

Question 95: Which city in Bihar is known for its emerging IT sector?

A. Patna

B. Gaya

C. Muzaffarpur

D. Bhagalpur

Question 96: Which of the following is a science museum in Bihar?

A. Shri Krishna Science Centre, Patna

B. Indira Gandhi Science Complex, Patna

C. Both A and B

D. Neither A nor B

Question 97: What is the focus of the Bihar Agricultural University, Sabour?

A. Research and development in agriculture

B. Providing agricultural education and training

C. Promoting sustainable agricultural practices

D. All of the above

Question 98:  Which of the following is a traditional craft of Bihar that involves scientific principles?

A. Madhubani painting

B. Bhagalpuri silk weaving

C. Making of Sikki grass products

D. All of the above

Question 99:  What is the role of the Bihar Council on Science and Technology?

A. To advise the state government on science and technology policies

B. To promote scientific research and development in Bihar

C. To popularize science and technology among the public

D. All of the above

Question 100:  Which of the following is a challenge for science and technology development in Bihar?

A. Lack of adequate infrastructure

B. Limited access to funding and resources

C. Brain drain of skilled professionals

D. All of the above

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