Home / 0654_s22_qp_21

Question 1:-

Subtopic: B1.1

Which statement about one of the characteristics of living organisms is correct?
A Excretion is the removal of excess substances and toxic materials.
B Movement is the ability to detect and respond to changes in the environment.
C Nutrition is the maintenance of a constant internal environment.
D Respiration is the manufacture of nutrients from raw materials.

▶️Answer/Explanation

Ans :A

Question 2:-

Subtopic: B2.1

Which statement about cells is correct?
A Cell membranes are found only in animal cells.
B Cell membranes are found only in plant cells.
C Cell walls are found only in animal cells.
D Cell walls are found only in plant cells.

▶️Answer/Explanation

Ans: D

Question 3:-

Subtopic: B4.1

Which small molecules are joined together to make a starch molecule?
A amino acids
B fatty acids
C glucose
D glycerol

▶️Answer/Explanation

Ans: C 

Question 4:-

Subtopic: B5.1

The graph shows the effect of increasing temperature on an enzyme-controlled reaction.

What are the correct labels for the y-axis and the x-axis?

▶️Answer/Explanation

Ans: A

Question 5:-

Subtopic: B6.1

Which graph shows the effect of light intensity on the rate of photosynthesis, if all other factors are kept constant?

▶️Answer/Explanation

Ans: D

Question 6:-

Subtopic: B7.2

The diagram shows part of the digestive system.

Which labelled parts produce digestive enzymes, absorb water and store bile?

▶️Answer/Explanation

Ans :C

Question 7:-

Subtopic: B8.3

Where does evaporation of water occur during transpiration?
A from the air spaces through the stomata
B from the phloem
C from the surfaces of mesophyll cells
D from the xylem

▶️Answer/Explanation

Ans :C

Question 8:-

Subtopic: B10.1

Which row is correct about the components of tobacco smoke and their effects?

▶️Answer/Explanation

Ans: D

Question 9:-

Subtopic: B12.1

The graph shows the changes in blood glucose concentration during two hours of exercise.

What causes the change in blood glucose concentration between 30 and 60 min?
1 increased adrenaline release
2 increased glucagon release
3 increased insulin release
A  1 only     B  1 and 2     C  1 and 3     D  2 only

▶️Answer/Explanation

Ans :B

Question 10:-

Subtopic: B15.3

The diagram shows a wind-pollinated flower.
Which structure is adapted to receive pollen?

▶️Answer/Explanation

Ans :B

Question 11:-

Subtopic: B16.1

Cystic fibrosis is a genetic disease caused by a recessive allele.

What is the genetic composition of the parents?

▶️Answer/Explanation

Ans :C

Question 12:-

Subtopic: B18.2

Which organisms obtain energy directly from every trophic level?
A carnivores
B decomposers
C herbivores
D producers

▶️Answer/Explanation

Ans :B

Question 13:-

Subtopic: B19.1

Which flowchart correctly shows the stages of eutrophication?

▶️Answer/Explanation

Ans: D

Question 14:-

Subtopic: C12.4

A mixture contains solid P dissolved in liquid Q.
Which process is used to obtain a pure sample of liquid Q from this mixture?
A crystallisation
B distillation
C evaporation
D paper chromatography

▶️Answer/Explanation

Ans :B

Question 15:-

Subtopic: C6.1

Three different processes are listed.
1 heating ice to form water
2 lighting a match
3 removing zinc from sodium chloride solution by filtration
Which processes are physical changes?
A  1, 2 and 3     B  1 and 2 only     C  1 and 3 only     D  2 and 3 only

▶️Answer/Explanation

Ans :C

Question 16:-

Subtopic: C2.4

Sodium phosphate, Na3PO4, contains sodium ions, Na+ .
Aluminium sulfate, Al 2(SO4)3, contains sulfate ions, SO4 2–.

What is the formula of aluminium phosphate?
A  AlPO4     B  Al(PO4)2     C  Al 2(PO4)3     D  Al 3(PO4)2

▶️Answer/Explanation

Ans :A

Question 17:-

Subtopic: C4.1

Aqueous copper(II) sulfate is electrolysed using inert electrodes.
Which statement about this electrolysis is correct?
A Copper ions are attracted to the cathode.
B Electrons move from the cathode to the anode.
C Electrolyte ions are oxidised at the cathode.
D Sulfate ions are reduced to sulfur dioxide.

▶️Answer/Explanation

Ans :A

Question 18:-

Subtopic: C6.3

Sodium reacts with chlorine to form sodium chloride.
The equation is shown.

             2Na + Cl2 → 2NaCl

During the reaction, sodium atoms ……1…… electrons and chlorine molecules act as ……2…… .
Which row completes gaps 1 and 2?

▶️Answer/Explanation

Ans :C

Question 19:-

Subtopic: C12.5

Which row shows the flame test colours for lithium and sodium?

▶️Answer/Explanation

Ans: D

Question 20:-

Subtopic: C8.5

A gas is used in welding metals together at high temperatures.
The gas is used to provide an inert atmosphere.
What is the gas?
A argon
B carbon dioxide
C fluorine
D oxygen

▶️Answer/Explanation

Ans :A

Question 21:-

Subtopic: C9.1

Which row does not link a general physical property to the type of element?

▶️Answer/Explanation

Ans :C

Question 22:-

Subtopic: C9.6

Iron is extracted from hematite in the blast furnace.
Why is limestone added to the furnace?
A It decreases the melting point of the mixture.
B It increases the temperature inside the furnace.
C It produces calcium oxide which removes acidic impurities.
D It produces carbon dioxide which reduces the hematite.

▶️Answer/Explanation

Ans :C

Question 23:-

Subtopic: C9.5

A piece of iron is coated with a layer of zinc.
Which statement explains why zinc prevents iron from rusting, even when the layer of zinc is damaged?
A Iron is less reactive than zinc and zinc atoms lose electrons less easily than iron atoms.
B Iron is less reactive than zinc and zinc atoms lose electrons more easily than iron atoms.
C Iron is more reactive than zinc and zinc atoms lose electrons less easily than iron atoms.
D Iron is more reactive than zinc and zinc atoms lose electrons more easily than iron atoms.

▶️Answer/Explanation

Ans : B

Question 24:-

Subtopic: C6.2

Sulfuric acid is produced in the Contact process.
Which substances react together in a reversible reaction in the Contact process?
A S and O2
B SO2 and O2
C H2SO4 and SO3
D H2S2O7 and H2O

▶️Answer/Explanation

Ans :B

Question 25:-

Subtopic: C10.1

Why do farmers add limestone to soil?
A It acts as a fertiliser.
B It adds nitrogen to the soil.
C It decreases the pH of the soil.
D It increases the pH of the soil.

▶️Answer/Explanation

Ans: D

Question 26:-

Subtopic: C11.4

The same mass of five different alkanes are left to evaporate under identical conditions.
The mass lost by each alkane in one day is measured.
Which graph shows the mass lost against the number of carbon atoms in each alkane chain?

▶️Answer/Explanation

Ans :A

Question 27:-

Subtopic: C11.7

A section of a polymer made from two different monomers is shown.

Which monomers are used to make this polymer?
A HO2CCH2CO2H and H2NCH2NH2
B HO2CCH2CO2H and H2NCH2CH2NH2
C HO2CCH2CH2CO2H and H2NCH2NH2
D HO2CCH2NH2 and HO2CCH2CH2NH2

▶️Answer/Explanation

Ans: D

Question 28:-

Subtopic: P1.2

What is the difference between speed and velocity?
A Speed has magnitude and direction; velocity has magnitude only.
B Speed has magnitude and direction; velocity has direction only.
C Speed has magnitude only; velocity has magnitude and direction.
D Speed has magnitude only; velocity has direction only.

▶️Answer/Explanation

Ans :C

Question 29:-

Subtopic: P1.5.1

The diagram shows a car of mass 1000 kg travelling along a straight, horizontal road. The driving force from the car’s engine is 3000N. The total resistive force acting on the car is 2500 N.

What is the acceleration of the car along the road?
A 0.50 m/s2    B 2.0 m / s2    C 3.0 m/s2    D 5.5 m/s2

▶️Answer/Explanation

Ans :A

Question 30:-

Subtopic: P1.6.1

An object moving at speed v has kinetic energy E.
What is the speed of the object when its kinetic energy is 4.0E?
A 0.25 v  B  2.0 v  C 4.0 v  D 16 v

▶️Answer/Explanation

Ans :B

Question 31:-

Subtopic: P1.6.4

A passenger lift (elevator) has a total weight of 4000 N, including the people inside it. The power
output of the lift motor is 800 W.
How much time does it take for the lift to rise 12 m vertically?
A  2.4 s  B 6.0 s  C 24 s  D 60 s

▶️Answer/Explanation

Ans: D

Question 32:-

Subtopic: P2.2.2

What happens to the temperature of a substance as it is melting and as it is boiling?

▶️Answer/Explanation

Ans: D

Question 33:-

Subtopic: P3.2.3

The diagram shows how a thin, converging lens forms an image of an object.
One principal focus of the lens is labelled F.

How is the image described?
A enlarged, upright and real
B enlarged, upright and virtual
C diminished, inverted and real
D diminished, inverted and virtual

▶️Answer/Explanation

Ans :B

Question 34:- 

Subtopic: P3.4

Which statement about sound is correct?
A An echo is produced by refraction of sound waves.
B The amplitude of a sound wave affects the pitch of a sound.
C The approximate range of audible frequencies for a human is 20 Hz–20kHz.
D Sound waves travel more quickly in a vacuum than in air.

▶️Answer/Explanation

Ans :C

Question 35:- 

Subtopic: P4.2.1

A plastic rod is rubbed with a cloth and the rod becomes positively charged.
Why does this happen?
A Electrons move from the cloth to the rod.
B Electrons move from the rod to the cloth.
C Protons move from the cloth to the rod.
D Protons move from the rod to the cloth.

▶️Answer/Explanation

Ans :B

Question 36:-

Subtopic: P4.2.4

The resistance of a wire is 20 Ω  . A second wire is made of the same material. The second wire is
four times as long and has half the cross-sectional area of the first wire.
What is the resistance of the second wire?
A 10Ω          B 40Ω          C 80Ω         D 160Ω

▶️Answer/Explanation

Ans: D

Question 37:-  

Subtopic: P4.3.2

Which row shows how lamps are connected in a lighting circuit in a house and gives an
advantage of connecting them in this way?

▶️Answer/Explanation

Ans :A

Question 38:-

Subtopic: P4.5.6

A transformer increases the voltage from a power station in order to transfer electricity along
transmission cables.
How does increasing the voltage affect the current in the cables and how does it affect the
efficiency of energy transfer?

▶️Answer/Explanation

Ans :B

Question 39:- 

Subtopic: P5.1

An atom of beryllium is represented by \( _{4}^{9}\textrm{Be}\)

How many neutrons are in the nucleus of this type of beryllium atom?
A   4             B   5              C   9              D  1

▶️Answer/Explanation

Ans :B

Question 40:-

Subtopic: P5.2.2

A beam of α -particles and β-particles passes into an electric field between two horizontal parallel
plates in a vacuum.

Which row shows what happens to the beam?

▶️Answer/Explanation

Ans :C

Scroll to Top