Question 1
Cambridge Primary 1
What do plants need to grow?
A
Only toys
B
Light and water
C
Only stones
D
No air
Explanation
Most plants need light, water and air to grow.
Question 2
Cambridge Primary 1
Which item uses electricity?
A
Pencil
B
Banana
C
Lamp
D
Paper
Explanation
A lamp needs electricity or a battery to give light.
Question 3
Cambridge Primary 1
Which part helps a bird fly?
A
Wings
B
Fins
C
Roots
D
Wheels
Explanation
Birds use wings for flying.
Question 4
Cambridge Primary 1
Which is the safest way to smell an unknown liquid?
A
Drink it
B
Touch your tongue to it
C
Ask an adult
D
Pour it on your hand
Explanation
Unknown substances should be checked by an adult.
Question 5
Cambridge Primary 1
Which object is usually soft?
A
Metal spoon
B
Stone
C
Feather
D
Glass cup
Explanation
A feather is soft.
Question 6
Cambridge Primary 2
What does a shadow need?
A
Light and an object blocking it
B
Only water
C
Only sound
D
Only soil
Explanation
A shadow forms when light is blocked.
Question 7
Cambridge Primary 2
Which direction does gravity pull objects?
A
Down towards Earth
B
Up to clouds
C
Sideways only
D
Nowhere
Explanation
Gravity pulls objects towards Earth.
Question 8
Cambridge Primary 2
Which material is flexible?
A
Rubber band
B
Brick
C
Glass bottle
D
Stone
Explanation
A rubber band can bend and stretch.
Question 9
Cambridge Primary 2
Which object gives the clearest reflection?
A
Mirror
B
Towel
C
Carpet
D
Cardboard
Explanation
A mirror has a smooth shiny surface.
Question 10
Cambridge Primary 2
Why do we sort materials?
A
To compare their properties
B
To make them alive
C
To stop gravity
D
To remove all colour
Explanation
Sorting helps us group materials by properties such as hard, soft or waterproof.
Question 11
Cambridge Primary 3
What does a skeleton do?
A
Supports and protects the body
B
Makes all food
C
Pumps blood only
D
Stores light
Explanation
The skeleton gives support and protects organs.
Question 12
Cambridge Primary 3
Which teeth are used for cutting food?
A
Incisors
B
Molars
C
Canines only
D
Roots
Explanation
Incisors at the front cut food.
Question 13
Cambridge Primary 3
Why repeat measurements?
A
To improve reliability
B
To make numbers longer
C
To avoid looking
D
To change every variable
Explanation
Repeats help identify mistakes and improve reliability.
Question 14
Cambridge Primary 3
Why do scientists draw conclusions?
A
To explain what evidence shows
B
To ignore results
C
To avoid measuring
D
To choose favourite answers
Explanation
Conclusions should be based on evidence.
Question 15
Cambridge Primary 3
Which is an invertebrate?
A
Butterfly
B
Dog
C
Bird
D
Lizard
Explanation
Butterflies do not have backbones.
Question 16
Cambridge Primary 4
Which teeth are used for cutting food?
A
Incisors
B
Molars
C
Canines only
D
Roots
Explanation
Incisors at the front cut food.
Question 17
Cambridge Primary 4
Which method can recover salt from salt water?
A
Evaporation
B
Sieving
C
Using a magnet
D
Stretching
Explanation
Evaporation removes the water and leaves salt behind.
Question 18
Cambridge Primary 4
Which surface reflects light best?
A
Smooth shiny surface
B
Rough black cloth
C
Mud
D
Carpet
Explanation
Smooth shiny surfaces reflect light well.
Question 19
Cambridge Primary 4
What is evaporation?
A
Liquid changing to gas
B
Gas changing to liquid
C
Solid changing to liquid
D
Plant making seeds
Explanation
Evaporation is when liquid becomes gas.
Question 20
Cambridge Primary 4
What gas do plants release during photosynthesis?
A
Oxygen
B
Carbon dioxide only
C
Nitrogen only
D
Methane
Explanation
Oxygen is released as a product of photosynthesis.
Question 21
Cambridge Primary 5
Which statement is true?
A
Flowering and non-flowering plants are both plants
B
Only flowering plants have cells
C
Non-flowering plants are animals
D
All non-flowering plants live underwater
Explanation
Both groups share plant characteristics.
Question 22
Cambridge Primary 5
Which state is easiest to describe by saying "no fixed shape and no fixed volume"?
A
solid
B
gas
C
crystal
D
liquid
Explanation
Gases take both the shape and volume of their container.
Question 23
Cambridge Primary 5
Use the model. What is seed dispersal?
A
first growth of a seed
B
movement of seeds away from the parent plant
C
transfer of pollen
D
formation of nectar
Explanation
Dispersal spreads seeds.
Question 24
Cambridge Primary 5
How long does Earth take to rotate once?
A
about 24 minutes
B
about one year exactly for one spin
C
about 24 hours
D
about one month
Explanation
One rotation is about one day.
Question 25
Cambridge Primary 5
Which animal shape reduces water resistance?
A
flat square body
B
streamlined fish body
C
large rough board shape
D
spiky open umbrella body
Explanation
Streamlining helps movement through water.
Question 26
Cambridge Primary 6
Which chamber pumps blood to the body?
A
Right atrium
B
Left ventricle
C
Right ventricle
D
Left atrium
Explanation
The left ventricle pumps oxygenated blood around the body.
Question 27
Cambridge Primary 6
Which nutrient is important for growth and repair?
A
Salt only
B
Protein
C
Fibre only
D
Water only
Explanation
Protein is needed for growth and repair.
Question 28
Cambridge Primary 6
Which statement is a conclusion?
A
I like plants
B
The ruler is blue
C
Tomorrow is Saturday
D
The plant with more light grew taller
Explanation
A conclusion explains what the results show.
Question 29
Cambridge Primary 6
Which is the best improvement to an investigation?
A
Change all variables
B
Use only one reading
C
Repeat readings and calculate a mean
D
Ignore anomalies always
Explanation
Repeats and means improve reliability.
Question 30
Cambridge Primary 6
How can a saturated solution be made to dissolve more solute?
A
Freeze it always
B
Warm it in many cases
C
Add sand
D
Use a magnet
Explanation
Many solids become more soluble at higher temperatures.
Question 31
Cambridge Lower Secondary 7
Which is a renewable energy source?
A
Coal
B
Oil
C
Wind
D
Natural gas
Explanation
Wind is naturally replenished.
Question 32
Cambridge Lower Secondary 7
What is neutralisation?
A
Light reflecting
B
Current flowing
C
Solid melting
D
Acid reacting with alkali to form salt and water
Explanation
Neutralisation reduces acidity or alkalinity.
Question 33
Cambridge Lower Secondary 7
What is density?
A
Mass divided by volume
B
Force divided by time
C
Current divided by voltage
D
Volume divided by mass
Explanation
Density is \(\rho=m/V\).
Question 34
Cambridge Lower Secondary 7
What is a hypothesis?
A
A final mark
B
A random drawing
C
A testable idea
D
A safety rule only
Explanation
A hypothesis is an idea that can be tested.
Question 35
Cambridge Lower Secondary 7
What is the role of decomposers?
A
Become planets
B
Break down dead material
C
Stop all food chains
D
Make sunlight
Explanation
Decomposers recycle nutrients.
Question 36
Cambridge Lower Secondary 8
What is the role of decomposers?
A
Make sunlight
B
Break down dead material
C
Become planets
D
Stop all food chains
Explanation
Decomposers recycle nutrients.
Question 37
Cambridge Lower Secondary 8
What does acceleration mean?
A
Stored energy only
B
Mass per volume
C
Distance only
D
Change in velocity per second
Explanation
Acceleration is rate of change of velocity.
Question 38
Cambridge Lower Secondary 8
Calculate density of a 200 g object with volume 50 cm3 .
A
4 g/cm3
B
0.25 g/cm3
C
10000 g/cm3
D
250 g/cm3
Explanation
Density = mass/volume = 200/50 = 4 g/cm3 .
Question 39
Cambridge Lower Secondary 8
Which organism is a consumer?
A
Rabbit
B
Grass
C
Oak tree
D
Algae
Explanation
A rabbit gets energy by eating other organisms.
Question 40
Cambridge Lower Secondary 8
Which wave can travel through a vacuum?
A
Sound
B
Seismic P waves only
C
Light
D
Water waves only
Explanation
Light is electromagnetic and can travel through a vacuum.
Question 41
Cambridge Lower Secondary 9
Which object floats in water if its density is less than water?
A
More dense object
B
Less dense object
C
Any stone
D
Any metal
Explanation
Objects less dense than water tend to float.
Question 42
Cambridge Lower Secondary 9
Which reaction is exothermic?
A
Evaporation only
B
Combustion
C
Thermal decomposition only
D
Melting ice
Explanation
Combustion releases energy to the surroundings.
Question 43
Cambridge Lower Secondary 9
Which energy source is non-renewable?
A
Solar
B
Tidal
C
Coal
D
Wind
Explanation
Coal forms over millions of years and is used faster than it is replaced.
Question 44
Cambridge Lower Secondary 9
Which gas is needed for aerobic respiration?
A
Nitrogen
B
Helium
C
Oxygen
D
Argon
Explanation
Aerobic respiration uses oxygen to release energy from glucose.
Question 45
Cambridge Lower Secondary 9
Which separation method identifies dyes in ink?
A
Chromatography
B
Decanting
C
Filtration
D
Evaporation only
Explanation
Chromatography separates dissolved substances by movement through a medium.
Question 46
Cambridge IGCSE 10
Which process transfers thermal energy in fluids?
A
Ionisation
B
Convection
C
Conduction only in vacuum
D
Reflection
Explanation
Convection occurs by movement of warmer fluid.
Question 47
Cambridge IGCSE 10
What is the product at the cathode in electrolysis of molten lead bromide?
A
Oxygen
B
Bromine
C
Hydrogen
D
Lead
Explanation
Positive lead ions gain electrons at the cathode.
Question 48
Cambridge IGCSE 10
What is active transport?
A
Gas burning
B
Water evaporation
C
Movement against a concentration gradient using energy
D
Movement down a gradient only
Explanation
Active transport needs energy to move substances against a gradient.
Question 49
Cambridge IGCSE 10
What is the atomic number?
A
Electrons plus neutrons only
B
Number of neutrons only
C
Protons plus neutrons
D
Number of protons
Explanation
Atomic number equals number of protons.
Question 50
Cambridge IGCSE 10
Why use a control group?
A
To avoid conclusions
B
To hide data
C
To compare with the experimental group
D
To change all variables
Explanation
Controls help show whether the independent variable caused an effect.
Question 51
Cambridge IGCSE 11
Which blood component carries oxygen?
A
Plasma only
B
Red blood cells
C
Platelets
D
White blood cells only
Explanation
Red blood cells contain haemoglobin.
Question 52
Cambridge IGCSE 11
Which sampling method uses a square frame?
A
Titration
B
Chromatography
C
Distillation
D
Quadrat sampling
Explanation
Quadrats estimate abundance or distribution of organisms.
Question 53
Cambridge IGCSE 11
Which bonding occurs in sodium chloride?
A
Ionic bonding
B
Metallic bonding only
C
Covalent bonding only
D
Hydrogen bonding only
Explanation
Sodium transfers an electron to chlorine, forming ions.
Question 54
Cambridge IGCSE 11
What is the critical angle?
A
Angle of incidence giving angle of refraction 90 degrees
B
Angle of reflection only
C
Angle in a triangle
D
Angle of diffraction
Explanation
At the critical angle the refracted ray travels along the boundary.
Question 55
Cambridge IGCSE 11
A 1200 kg car accelerates at 2.5 m/s2 . Find resultant force.
A
480 N
B
300 N
C
1202.5 N
D
3000 N
Explanation
\(F=ma=1200\times2.5=3000\) N.
Question 56
Cambridge AS Level
Which vessel transports water in plants?
A
Artery
B
Vein
C
Xylem
D
Phloem only
Explanation
Xylem transports water and mineral ions.
Question 57
Cambridge AS Level
Which microscope has the highest resolving power?
A
Hand lens
B
Electron microscope
C
Naked eye
D
Light microscope always
Explanation
Electron microscopes use shorter wavelengths for higher resolution.
Question 58
Cambridge AS Level
Which unit is equivalent to a joule?
A
A/V
B
N/s
C
kg/m
D
N m
Explanation
Work done equals force times distance, so a joule is a newton metre.
Question 59
Cambridge AS Level
What is the Young modulus?
A
Stress divided by strain
B
Strain divided by stress
C
Force divided by charge
D
Energy divided by time
Explanation
Young modulus measures stiffness as stress/strain.
Question 60
Cambridge AS Level
What is the SI unit of electric field strength?
A
N/C
B
J
C
W
D
kg/m3
Explanation
Electric field strength is force per unit charge, N/C.
Question 61
Cambridge A Level
What is the function of haemoglobin?
A
Transport oxygen
B
Digest starch
C
Store DNA
D
Make antibodies only
Explanation
Haemoglobin binds oxygen in red blood cells.
Question 62
Cambridge A Level
What does line spectra provide evidence for?
A
Continuous energy only
B
No electrons in atoms
C
Quantised electron energy levels
D
Only chemical bonds
Explanation
Discrete spectral lines show electrons have quantised energy levels.
Question 63
Cambridge A Level
Which bond holds water molecules to each other?
A
Ionic bond only
B
Hydrogen bond
C
Metallic bond
D
Peptide bond
Explanation
Water molecules form hydrogen bonds.
Question 64
Cambridge A Level
What is translation?
A
Evaporation from leaves
B
Ionisation of atoms
C
Assembly of amino acids using mRNA at a ribosome
D
Copying DNA into DNA
Explanation
Translation uses mRNA codons to build a polypeptide.