SCIENCE COMPETITION

Questions and Answers

1. Which part absorbs water in plants?
      * Options:
        A) Leaf
        B) Stem
        C) Root
        D) Flower
      * Answer: C) Root

2. Photosynthesis occurs in:
      * Options:
        A) Roots
        B) Leaves
        C) Stem
        D) Flowers
      * Answer: B) Leaves

3. Gas released during photosynthesis:
      * Options:
        A) CO₂
        B) O₂
        C) N₂
        D) H₂
      * Answer: B) O₂

4. Transpiration occurs through:
      * Options:
        A) Stomata
        B) Roots
        C) Stem
        D) Xylem
      * Answer: A) Stomata

5. Xylem transports:
      * Options:
        A) Food
        B) Water
        C) Oxygen
        D) Sugar
      * Answer: B) Water

CHARACTERISTICS OF LIVING ORGANISMS

Key Features

• Growth is a feature of:
     * Options:
       A) Non-living
       B) Living
       C) Machines
       D) Rocks
     * Answer: B) Living

• Classification helps to:
     * Options:
       A) Confuse
       B) Group organisms
       C) Destroy
       D) Mix
     * Answer: B) Group organisms

• Plants make food by:
     * Options:
       A) Respiration
       B) Photosynthesis
       C) Digestion
       D) Absorption
     * Answer: B) Photosynthesis

• Animals differ from plants because they:
     * Options:
       A) Grow
       B) Move
       C) Breathe
       D) Reproduce
     * Answer: B) Move

• Response to stimuli is:
     * Options:
       A) Growth
       B) Sensitivity
       C) Respiration
       D) Excretion
     * Answer: B) Sensitivity

CELLULAR ORGANIZATION

Basic Concepts

• Basic unit of life:
     * Options:
       A) Tissue
       B) Cell
       C) Organ
       D) Atom
     * Answer: B) Cell

• Plant cell has:
     * Options:
       A) Cell wall
       B) No nucleus
       C) No membrane
       D) No cytoplasm
     * Answer: A) Cell wall

• Control center of cell:
     * Options:
       A) Nucleus
       B) Cytoplasm
       C) Membrane
       D) Ribosome
     * Answer: A) Nucleus

• Animal cells lack:
     * Options:
       A) Membrane
       B) Nucleus
       C) Cell wall
       D) Cytoplasm
     * Answer: C) Cell wall

• Mitochondria produce:
     * Options:
       A) Energy
       B) Water
       C) Food
       D) Oxygen
     * Answer: A) Energy

FLOWERS AND SEEDS

Plant Reproduction

• Male part of flower:
     * Options:
       A) Pistil
       B) Stamen
       C) Petal
       D) Sepal
     * Answer: B) Stamen

• Pollination is transfer of:
     * Options:
       A) Seeds
       B) Pollen
       C) Water
       D) Food
     * Answer: B) Pollen

• Fertilization forms:
     * Options:
       A) Leaf
       B) Seed
       C) Root
       D) Stem
     * Answer: B) Seed

• Vegetative propagation uses:
     * Options:
       A) Seeds
       B) Roots/stems
       C) Flowers
       D) Fruits
     * Answer: B) Roots/stems

• Petals help in:
     * Options:
       A) Photosynthesis
       B) Attract insects
       C) Absorption
       D) Respiration
     * Answer: B) Attract insects

FIVE KINGDOM CLASSIFICATION

Kingdom Classifications

• Bacteria belong to:
     * Options:
       A) Plantae
       B) Monera
       C) Fungi
       D) Animalia
     * Answer: B) Monera

• Mushrooms belong to:
     * Options:
       A) Fungi
       B) Plants
       C) Animals
       D) Protista
     * Answer: A) Fungi

• Amoeba belongs to:
     * Options:
       A) Monera
       B) Protista
       C) Fungi
       D) Plantae
     * Answer: B) Protista

• Humans belong to:
     * Options:
       A) Animalia
       B) Plantae
       C) Fungi
       D) Protista
     * Answer: A) Animalia

• Algae belong to:
     * Options:
       A) Protista
       B) Animalia
       C) Fungi
       D) Monera
     * Answer: A) Protista

DIVERSITY & ENVIRONMENT

Environmental Factors

• Living components are:
     * Options:
       A) Abiotic
       B) Biotic
       C) Non-living
       D) Physical
     * Answer: B) Biotic

• Example of abiotic factor:
     * Options:
       A) Plant
       B) Animal
       C) Water
       D) Bacteria
     * Answer: C) Water

• Food chain starts with:
     * Options:
       A) Consumers
       B) Producers
       C) Decomposers
       D) Omnivores
     * Answer: B) Producers

• Herbivores eat:
     * Options:
       A) Meat
       B) Plants
       C) Both
       D) None
     * Answer: B) Plants

• Decomposers break down:
     * Options:
       A) Food
       B) Waste
       C) Dead organisms
       D) Water
     * Answer: C) Dead organisms

HUMAN HEALTH

Health Concepts

• Disease spread by contact:
     * Options:
       A) Non-contagious
       B) Contagious
       C) Genetic
       D) Mental
     * Answer: B) Contagious

• Vaccine helps in:
     * Options:
       A) Cure
       B) Prevention
       C) Growth
       D) Digestion
     * Answer: B) Prevention

• Bacteria are:
     * Options:
       A) Plants
       B) Microorganisms
       C) Animals
       D) Rocks
     * Answer: B) Microorganisms

• Malaria spreads by:
     * Options:
       A) Air
       B) Mosquito
       C) Water
       D) Food
     * Answer: B) Mosquito

• Vitamin deficiency causes:
     * Options:
       A) Strength
       B) Disease
       C) Growth
       D) Energy
     * Answer: B) Disease

IMMUNITY & DISEASES

Immunity Concepts

• Immunity means:
     * Options:
       A) Weakness
       B) Protection
       C) Infection
       D) Injury
     * Answer: B) Protection

• Pathogens are:
     * Options:
       A) Useful microbes
       B) Disease-causing organisms
       C) Plants
       D) Animals
     * Answer: B) Disease-causing organisms

• White blood cells:
     * Options:
       A) Digest food
       B) Fight disease
       C) Carry oxygen
       D) Store fat
     * Answer: B) Fight disease

• Natural immunity is:
     * Options:
       A) Born with
       B) Given by vaccine
       C) Artificial
       D) Temporary
     * Answer: A) Born with

• Antibodies help in:
     * Options:
       A) Growth
       B) Protection
       C) Infection
       D) Digestion
     * Answer: B) Protection

DIGESTION AND ABSORPTION

Digestive System Functions

• Stomach digests:
     * Options:
       A) Carbohydrates
       B) Proteins
       C) Fats
       D) Vitamins
     * Answer: B) Proteins

• Absorption occurs in:
     * Options:
       A) Mouth
       B) Small intestine
       C) Stomach
       D) Liver
     * Answer: B) Small intestine

• Liver produces:
     * Options:
       A) Enzyme
       B) Bile
       C) Acid
       D) Blood
     * Answer: B) Bile

• Teeth help in:
     * Options:
       A) Absorption
       B) Chewing
       C) Digestion
       D) Breathing
     * Answer: B) Chewing

RESPIRATORY & CIRCULATORY SYSTEM

Key Functions

• Gas taken in during breathing:
     * Options:
       A) CO₂
       B) O₂
       C) N₂
       D) Hz
     * Answer: B) O₂

• Blood carries:
     * Options:
       A) Oxygen
       B) Food
       C) Waste
       D) All
     * Answer: D) All

• Heart pumps:
     * Options:
       A) Air
       B) Blood
       C) Water
       D) Food
     * Answer: B) Blood

• Lungs help in:
     * Options:
       A) Digestion
       B) Breathing
       C) Circulation
       D) Movement
     * Answer: B) Breathing

• Arteries carry blood:
     * Options:
       A) To heart
       B) Away from heart
       C) Both
       D) None
     * Answer: B) Away from heart

MATTER & ITS CHARACTERISTICS

Matter Fundamentals

• Matter is anything that has:
     * Options:
       A) Shape
       B) Mass & occupies space
       C) Color
       D) Smell
     * Answer: B) Mass & occupies space

• Solid has:
     * Options:
       A) Fixed shape
       B) No shape
       C) Gas form
       D) Flow
     * Answer: A) Fixed shape

• Liquid has:
     * Options:
       A) Fixed shape
       B) No volume
       C) Fixed volume
       D) No mass
     * Answer: C) Fixed volume

• Gas particles are:
     * Options:
       A) Close
       B) Fixed
       C) Far apart
       D) Solid
     * Answer: C) Far apart

• Metals are:
     * Options:
       A) Poor conductors
       B) Good conductors
       C) Non-reactive
       D) Soft only
     * Answer: B) Good conductors

MATTER AS PARTICLES

Particle Concepts

• Diffusion is:
     * Options:
       A) Heating
       B) Mixing of particles
       C) Cooling
       D) Melting
     * Answer: B) Mixing of particles

• Diffusion is fastest in:
     * Options:
       A) Solids
       B) Liquids
       C) Gases
       D) Plasma
     * Answer: C) Gases

• Brownian motion shows:
     * Options:
       A) Rest
       B) Movement of particles
       C) Energy loss
       D) Structure of matter
     * Answer: B) Movement of particles

• Particle theory explains:
     * Options:
       A) Living things
       B) Different atoms
       C) Plants
       D) Animals
     * Answer: B) Different atoms

Elements and Compounds

• Element contains:
     * Options:
       A) Pure substance
       B) Mixture can be
       C) Separated physically
       D) Changed
     * Answer: A) Pure substance

• Example of element:
     * Options:
       A) Water
       B) Oxygen
       C) Salt
       D) Sugar
     * Answer: B) Oxygen

• Compound is:
     * Options:
       A) Mixture
       B) Chemically only
       C) Cannot separate
       D) Destroyed
     * Answer: B) Chemically only

• Alloy is:
     * Options:
       A) Pure metal
       B) Mixture of metals
       C) Cannot separate
       D) Destroyed
     * Answer: B) Mixture of metals

PHYSICAL & CHEMICAL CHANGES

Changes Overview

• Physical change forms:
     * Options:
       A) New substance
       B) No new substance
       C) Gas
       D) Liquid
     * Answer: B) No new substance

• Chemical change forms:
     * Options:
       A) Same substance
       B) New substance
       C) No change
       D) Only heat
     * Answer: B) New substance

• Burning is:
     * Options:
       A) Physical
       B) Chemical
       C) Reversible
       D) Temporary
     * Answer: B) Chemical

• Melting ice is:
     * Options:
       A) Chemical
       B) Physical
       C) Reversible
       D) Temporary
     * Answer: B) Physical

• Reversible change can:
     * Options:
       A) Return back
       B) New substance
       C) No change
       D) Only heat
     * Answer: A) Return back

SOLUTIONS

Solution Elements

• Solute is:
     * Options:
       A) Dissolving substance
       B) Solvent
       C) Liquid
       D) Gas
     * Answer: A) Dissolving substance

• Solvent is:
     * Options:
       A) Dissolved
       B) Dissolver
       C) Gas
       D) Solid
     * Answer: B) Dissolver

• Solubility increases with:
     * Options:
       A) Cooling
       B) Heating
       C) Pressure
       D) Light
     * Answer: B) Heating

• Stirring helps in:
     * Options:
       A) Cooling
       B) Faster dissolving
       C) Heating
       D) Freezing
     * Answer: B) Faster dissolving

ENERGY & ITS FORMS

Energy Fundamentals

• Energy is ability to:
     * Options:
       A) Sleep
       B) Work
       C) Eat
       D) Move
     * Answer: B) Work

• Kinetic energy is energy of:
     * Options:
       A) Rest
       B) Motion
       C) Heat
       D) Light
     * Answer: B) Motion

• Potential energy is:
     * Options:
       A) Motion
       B) Stored energy
       C) Light
       D) Sound
     * Answer: B) Stored energy

• Unit of energy:
     * Options:
       A) Watt
       B) Joule
       C) Meter
       D) Newton
     * Answer: B) Joule

• Energy cannot be:
     * Options:
       A) Created or destroyed
       B) Used
       C) Transferred
       D) Stored
     * Answer: A) Created or destroyed

LIGHT

Light Principles

• Luminous objects:
     * Options:
       A) Reflect light
       B) Produce light
       C) Absorb light
       D) Block light
     * Answer: B) Produce light

• Moon is:
     * Options:
       A) Luminous
       B) Non-luminous
       C) Transparent
       D) Opaque
     * Answer: B) Non-luminous

• Transparent objects allow:
     * Options:
       A) No light
       B) Some light
       C) All light
       D) Reflection
     * Answer: C) All light

• Image in plane mirror is:
     * Options:
       A) Real
       B) Virtual
       C) Inverted
       D) Broken
     * Answer: B) Virtual

• Shadow forms when:
     * Options:
       A) Light passes
       B) Light blocked
       C) Light bends
       D) Light splits
     * Answer: B) Light blocked

LIGHT PHENOMENA

Light Phenomena

• Rainbow forms due to:
     * Options:
       A) Reflection
       B) Refraction
       C) Dispersion
       D) Absorption
     * Answer: C) Dispersion

• Light travels in:
     * Options:
       A) Curve
       B) Straight line
       C) Zigzag
       D) Circle
     * Answer: B) Straight line

• Opaque objects:
     * Options:
       A) Allow light
       B) Block light
       C) Reflect fully
       D) Absorb all
     * Answer: B) Block light

• Translucent objects:
     * Options:
       A) Allow all light
       B) Allow some light
       C) Block all
       D) Reflect all
     * Answer: B) Allow some light

SOUND & TEMPERATURE

Sound and Thermal Properties

• Sound needs:
     * Options:
       A) Vacuum
       B) Medium
       C) Light
       D) Energy
     * Answer: B) Medium

• Sound travels fastest in:
     * Options:
       A) Gas
       B) Liquid
       C) Solid
       D) Vacuum
     * Answer: C) Solid

• Unit of temperature:
     * Options:
       A) Joule
       B) Celsius
       C) Watt
       D) Newton
     * Answer: B) Celsius

• Heat flows from:
     * Options:
       A) Cold to hot
       B) Hot to cold
       C) Same temp
       D) None
     * Answer: B) Hot to cold

• Thermometer measures:
     * Options:
       A) Heat
       B) Temperature
       C) Energy
       D) Pressure
     * Answer: B) Temperature

ENERGY LAWS

Energy Regulations

• Law of conservation states:
     * Options:
       A) Energy lost
       B) Energy created
       C) Energy changes form
       D) Energy stops
     * Answer: C) Energy changes form

• Moving ball has:
     * Options:
       A) Potential
       B) Kinetic
       C) No energy
       D) Heat
     * Answer: B) Kinetic

• Stretched spring has:
     * Options:
       A) Kinetic
       B) Potential
       C) No energy
       D) Heat
     * Answer: B) Potential

• Electrical energy converts into:
     * Options:
       A) Light
       B) Heat
       C) Sound
       D) All
     * Answer: D) All

• Sun is source of:
     * Options:
       A) Light
       B) Heat
       C) Energy
       D) All
     * Answer: D) All

WAVES AND ENERGY

Wave Concepts

• A transverse wave moves in:
     * Options:
       A) Same direction
       B) Opposite direction
       C) Perpendicular direction
       D) Circular motion
     * Answer: C) Perpendicular direction

• Sound is a:
     * Options:
       A) Transverse wave
       B) Longitudinal wave
       C) Light wave
       D) Magnetic wave
     * Answer: B) Longitudinal wave

• The unit of frequency is:
     * Options:
       A) Meter
       B) Second
       C) Hertz
       D) Joule
     * Answer: C) Hertz

• Energy from the sun is:
     * Options:
       A) Non-renewable
       B) Renewable
       C) Chemical
       D) Nuclear
     * Answer: B) Renewable

• Loudness of sound depends on:
     * Options:
       A) Frequency
       B) Amplitude
       C) Speed
       D) Time
     * Answer: B) Amplitude

HEAT AND TEMPERATURE

Thermal Principles

• SI unit of temperature:
     * Options:
       A) Celsius
       B) Kelvin
       C) Fahrenheit
       D) Joule
     * Answer: B) Kelvin

• Heat transfer in solids mainly occurs by:
     * Options:
       A) Conduction
       B) Convection
       C) Radiation
       D) Reflection
     * Answer: A) Conduction

• Mercury is used in thermometers because:
     * Options:
       A) It is cheap
       B) It expands uniformly
       C) It is solid
       D) It is gas
     * Answer: B) It expands uniformly

• Increase in size due to heat is:
     * Options:
       A) Contraction
       B) Expansion
       C) Reflection
       D) Compression
     * Answer: B) Expansion

• Heat from the sun reaches Earth by:
     * Options:
       A) Conduction
       B) Convection
       C) Radiation
       D) Expansion
     * Answer: C) Radiation

FORCES, MOTION AND PRESSURE

Force Concepts

• Force is measured in:
     * Options:
       A) Watt
       B) Newton
       C) Joule
       D) Pascal
     * Answer: B) Newton

• Gravity pulls objects:
     * Options:
       A) Upwards
       B) Sideways
       C) Downwards
       D) Randomly
     * Answer: C) Downwards

• Friction is a:
     * Options:
       A) Pull force
       B) Push force
       C) Opposing force
       D) Magnetic force
     * Answer: C) Opposing force

• Pressure =
     * Options:
       A) Force x Area
       B) Force / Area
       C) Area / Force
       D) Mass x Force
     * Answer: B) Force / Area

• A balanced force:
     * Options:
       A) Changes motion
       B) Stops motion
       C) Does not change motion
       D) Increases speed
     * Answer: C) Does not change motion

ELECTRICITY AND MAGNETISM

Electric Concepts

• Unit of current:
     * Options:
       A) Volt
       B) Ampere
       C) Ohm
       D) Watt
     * Answer: B) Ampere

• Materials that allow current are:
     * Options:
       A) Insulators
       B) Conductors
       C) Semiconductors
       D) Magnets
     * Answer: B) Conductors

• A magnet has:
     * Options:
       A) One pole
       B) Two poles
       C) Three poles
       D) No poles
     * Answer: B) Two poles

• Like poles:
     * Options:
       A) Attract
       B) Repel
       C) Neutralize
       D) Combine
     * Answer: B) Repel

• Unit of resistance:
     * Options:
       A) Volt
       B) Ampere
       C) Ohm
       D) Watt
     * Answer: C) Ohm

STRUCTURE OF ATOM

Atomic Fundamentals

• Smallest unit of matter:
     * Options:
       A) Molecule
       B) Atom
       C) Cell
       D) Ion
     * Answer: B) Atom

• Electrons are:
     * Options:
       A) Positive
       B) Neutral
       C) Negative
       D) Heavy
     * Answer: C) Negative

• Nucleus contains:
     * Options:
       A) Electrons
       B) Protons & neutrons
       C) Only neutrons
       D) Only protons
     * Answer: B) Protons & neutrons

• Electronic configuration shows:
     * Options:
       A) Atomic mass
       B) Electron arrangement
       C) Atomic size
       D) Color
     * Answer: B) Electron arrangement

Chemical Bonding

• Ionic bond forms by:
     * Options:
       A) Sharing electrons
       B) Transfer
       C) Breaking atoms
       D) Heating
     * Answer: B) Transfer

• Covalent bond involves:
     * Options:
       A) Sharing
       B) Breaking
       C) Only ions
       D) Only metals
     * Answer: A) Sharing

CHEMICAL REACTIONS

Reaction Concepts

• Reaction producing heat is:
     * Options:
       A) Endothermic
       B) Exothermic
       C) Neutral
       D) Slow
     * Answer: B) Exothermic

• Burning is a:
     * Options:
       A) Physical change
       B) Chemical change
       C) Temporary change
       D) Reversible
     * Answer: B) Chemical change

• Reactants are:
     * Options:
       A) Products
       B) Starting substances
       C) Final substances
       D) Catalysts
     * Answer: B) Starting substances

• Rusting of iron is:
     * Options:
       A) Physical
       B) Chemical
       C) Mechanical
       D) Thermal
     * Answer: B) Chemical

ACIDS, BASES AND SALTS

pH and Reactions

• pH less than 7 indicates:
     * Options:
       A) Base
       B) Acid
       C) Neutral
       D) Salt
     * Answer: B) Acid

• pH of pure water:
     * Options:
       A) 0
       B) 7
       C) 14
       D) 10
     * Answer: B) 7

• Blue litmus turns red in:
     * Options:
       A) Base
       B) Acid
       C) Salt
       D) Neutral
     * Answer: B) Acid

• Common salt formula:
     * Options:
       A) HCl
       B) NaCl
       C) H₂O
       D) CO₂
     * Answer: B) NaCl

EARTH AND ITS RESOURCES

Earth Overview

• Soil is important for:
     * Options:
       A) Breathing
       B) Plant growth
       C) Rocks
       D) Metals
     * Answer: B) Plant growth

• Earth's outer layer:
     * Options:
       A) Core
       B) Mantle
       C) Crust
       D) Shell
     * Answer: C) Crust

• The hottest layer:
     * Options:
       A) Crust
       B) Mantle
       C) Core
       D) Surface
     * Answer: C) Core

• Soil is formed by:
     * Options:
       A) Rocks breaking down
       B) Water freezing
       C) Air pressure
       D) Fire
     * Answer: A) Rocks breaking down

SPACE AND SATELLITES

Galactic Basics

• A satellite revolves around:
     * Options:
       A) Sun
       B) Planet
       C) Star
       D) Galaxy
     * Answer: B) Planet

• Moon is Earth's:
     * Options:
       A) Star
       B) Satellite
       C) Planet
       D) Comet
     * Answer: B) Satellite

• Artificial satellites are used for:
     * Options:
       A) Farming
       B) Communication
       C) Cooking
       D) Mining
     * Answer: B) Communication

• Earth revolves around:
     * Options:
       A) Moon
       B) Mars
       C) Sun
       D) Jupiter
     * Answer: C) Sun

• First artificial satellite:
     * Options:
       A) Apollo
       B) Sputnik 1
       C) Voyager
       D) Hubble
     * Answer: B) Sputnik 1

EARTH IN THE SOLAR SYSTEM

Earth and Its Position

• Weight depends on:
     * Options:
       A) Mass only
       B) Gravity
       C) Temperature
       D) Speed
     * Answer: B) Gravity

• Constellations are:
     * Options:
       A) Planets
       B) Groups of stars
       C) Galaxies
       D) Meteors
     * Answer: B) Groups of stars

• GPS works using:
     * Options:
       A) Rockets
       B) Satellites
       C) Stars
       D) Comets
     * Answer: B) Satellites

WEATHER AND CLIMATE

Weather Concepts

• Weather is:
     * Options:
       A) Long-term condition
       B) Daily condition
       C) Permanent
       D) Seasonal
     * Answer: B) Daily condition

• Climate is:
     * Options:
       A) Short-term
       B) Daily
       C) Long-term pattern
       D) Random
     * Answer: C) Long-term pattern

• Instrument to measure temperature:
     * Options:
       A) Barometer
       B) Thermometer
       C) Hygrometer
       D) Anemometer
     * Answer: B) Thermometer

• Air pressure is measured by:
     * Options:
       A) Thermometer
       B) Barometer
       C) Hygrometer
       D) Scale
     * Answer: B) Barometer

• Humidity is:
     * Options:
       A) Heat
       B) Water vapor in air
       C) Wind
       D) Pressure
     * Answer: B) Water vapor in air

EARTH'S PHENOMENA

Climate Principles

• Wind speed is measured by:
     * Options:
       A) Barometer
       B) Thermometer
       C) Anemometer
       D) Hygrometer
     * Answer: C) Anemometer

• Rainfall depends on:
     * Options:
       A) Humidity
       B) Rocks
       C) Soil
       D) Gravity
     * Answer: A) Humidity

• Climate change is mainly caused by:
     * Options:
       A) Trees
       B) Pollution
       C) Water
       D) Soil
     * Answer: B) Pollution

• Monsoon is:
     * Options:
       A) Dry wind
       B) Seasonal wind
       C) Cold air
       D) Storm
     * Answer: B) Seasonal wind

• Clouds form due to:
     * Options:
       A) Evaporation
       B) Condensation
       C) Freezing
       D) Melting
     * Answer: B) Condensation

SPACE PHENOMENA

Earth Movements

• Eclipse occurs when:
     * Options:
       A) Sun disappears
       B) One body blocks another
       C) Earth stops
       D) Moon breaks
     * Answer: B) One body blocks another

• Rotation causes:
     * Options:
       A) Seasons
       B) Day and night
       C) Rain
       D) Wind
     * Answer: B) Day and night

• Phases of Moon are due to:
     * Options:
       A) Earth's shadow
       B) Changing sunlight
       C) Rotation
       D) Gravity
     * Answer: B) Changing sunlight

• Largest planet:
     * Options:
       A) Earth
       B) Mars
       C) Jupiter
       D) Venus
     * Answer: C) Jupiter

• Dwarf planet example:
     * Options:
       A) Earth
       B) Mars
       C) Pluto
       D) Venus
     * Answer: C) Pluto

UNIVERSE FUNDAMENTALS

Cosmic Overview

• A galaxy is:
     * Options:
       A) Single star
       B) Group of stars
       C) Planet
       D) Satellite
     * Answer: B) Group of stars

• Milky Way is our:
     * Options:
       A) Planet
       B) Galaxy
       C) Star
       D) Satellite
     * Answer: B) Galaxy

• Star produces energy by:
     * Options:
       A) Burning
       B) Nuclear fusion
       C) Cooling
       D) Pressure
     * Answer: B) Nuclear fusion

• Black hole has:
     * Options:
       A) No gravity
       B) Very strong gravity
       C) Light
       D) Air
     * Answer: B) Very strong gravity

• A star is born in:
     * Options:
       A) Ocean
       B) Nebula
       C) Soil
       D) Core
     * Answer: B) Nebula

ENVIRONMENTAL POLLUTION

Pollution Insights

• Biodegradable means:
     * Options:
       A) Cannot decompose
       B) Can decompose
       C) Strong
       D) Toxic
     * Answer: B) Can decompose

• Plastic is:
     * Options:
       A) Biodegradable
       B) Non-biodegradable
       C) Natural
       D) Safe
     * Answer: B) Non-biodegradable

• Greenhouse effect causes:
     * Options:
       A) Cooling
       B) Warming
       C) Freezing
       D) Rain
     * Answer: B) Warming

• Main greenhouse gas:
     * Options:
       A) Oxygen
       B) Nitrogen
       C) CO₂
       D) Hydrogen
     * Answer: C) CO₂

• Air pollution affects:
     * Options:
       A) Soil only
       B) Humans
       C) Plants only
       D) Water only
     * Answer: B) Humans

WATER POLLUTION AND MANAGEMENT

Pollution Control

• Water pollution is caused by:
     * Options:
       A) Clean water
       B) Waste dumping
       C) Sunlight
       D) Wind
     * Answer: B) Waste dumping

• Reduce pollution by:
     * Options:
       A) Burning waste
       B) Recycling
       C) Cutting trees
       D) Using plastic
     * Answer: B) Recycling

• Ozone layer protects from:
     * Options:
       A) Heat
       B) UV rays
       C) Rain
       D) Wind
     * Answer: B) UV rays

• Deforestation leads to:
     * Options:
       A) More oxygen
       B) Pollution
       C) Cooling
       D) Rain
     * Answer: B) Pollution

• Best way to manage waste:
     * Options:
       A) Throw away
       B) Recycle
       C) Burn
       D) Bury
     * Answer: B) Recycle