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Question 1:

Topic- B1.1 (Characteristics of living organisms)

Which characteristic of a living organism releases energy for growth?
(A) excretion
(B) reproduction
(C) respiration
(D) sensitivity

▶️Answer/Explanation

Ans: C

Question 2:

Topic – B3.2 (Osmosis)

When a plant cell is put into a solution that has a lower water potential than the cell, the cytoplasm can pull away from the cell wall.
What is the term for this?
(A) flaccid
(B) plasmolysis
(C) turgid
(D) turgor pressure

▶️Answer/Explanation

Ans: B

Question 3:

Topic – B4.1 (Biological molecules)

Which colour does Benedict’s solution change to when heated with a reducing sugar?
(A) blue
(B) blue-black
(C) orange
(D) purple

▶️Answer/Explanation

Ans: C

Question 4:

Topic – B5.1 (Enzymes)

The graph shows the effect of increasing temperature on the time taken for amylase to fully digest a sample of starch.

Which statements are correct?
1 As the temperature increases, the kinetic energy of the amylase and starch molecules increases.
2 The time taken to fully digest the starch decreases as temperature increases because there are more frequent collisions between starch and amylase molecules.
3 The time taken to fully digest the starch decreases as temperature increases because the shape of the amylase changes as it denatures.
(A) 1, 2 and 3

(B) 1 and 2 only

(D) 2 and 3 only

▶️Answer/Explanation

Ans: B

Question 5:

Topic – B6.2 (Leaf structure)

The diagram shows a cross-section through a leaf.
Which tissue is adapted for gas exchange?

▶️Answer/Explanation

Ans: D

Question 6:

Topic – B7.3 (Digestion)

Pancreatic insufficiency is a condition that occurs when the pancreas is unable to produce enough enzymes.
Which secretions are reduced due to this condition?
(A) amylase, lipase and protease
(B) amylase, lipase and bile
(C) amylase, insulin and protease
(D) glucagon, insulin and protease

▶️Answer/Explanation

Ans: A

Question 7:

Topic – B8.1 (Xylem and phloem)

Which label shows the position of the xylem in the cross-section of the root of a dicotyledonous plant?

▶️Answer/Explanation

Ans: C

Question 8:

Topic – B12.1 (Respiration)

Aerobic respiration releases energy from nutrient molecules.
One molecule of glucose requires ……1…… molecules of oxygen. The reaction releases ……2……
molecules of carbon dioxide and ……3…… molecules of water.
Which row completes gaps 1, 2 and 3?

▶️Answer/Explanation

Ans: D

Question 9:

Topic – B13.1 (Coordination and response)

During an experiment, auxin is applied to one side of a shoot just behind the tip.
What will this stimulate?
(A) decreased cell elongation in all cells
(B) decreased cell elongation on the side with extra auxin
(C) increased cell elongation in all cells
(D) increased cell elongation on the side with extra auxin

▶️Answer/Explanation

Ans: D

Question 10:

Topic – B15.4 (Sexual reproduction in humans)

Which part of the male reproductive system is correctly matched to its function?

▶️Answer/Explanation

Ans: B

Question 11:

Topic – B16.3 (Monohybrid inheritance)

Cats with polydactyly have an extra digit on their paw. The allele for polydactyly, P, is dominant to the allele for having five digits, p.
The pedigree diagram shows a family of cats where polydactyly is present.

What is the probability that the next kitten from the mating of 3 and 4 has five digits?
(A) 0.00

(B) 0.25

(D) 0.75

▶️Answer/Explanation

Ans: C

Question 12:

Topic – B18.1 (Energy flow)

Four processes that occur in mammals are listed.

1 muscle contraction
2 cell division
3 excretion
4 maintenance of a constant body temperature

Which processes reduce the amount of energy available to the next trophic level?
(A) 1, 2, 3 and 4
(B) 1 and 2 only
(C) 1, 3 and 4 only
(D) 4 only

▶️Answer/Explanation

Ans: A

Question 13:

Topic – B19.1 (Habitat destruction)

Forests are cut down and burnt in deforestation programmes.
As a result of this, which gas in the atmosphere increases in concentration?
(A) carbon dioxide
(B) hydrogen
(C) nitrogen
(D) oxygen

▶️Answer/Explanation

Ans: A

Question 14:

Topic – C12.3 (Chromatography)

Dye X is a mixture of different coloured substances.
Chromatography is used to compare X with three other mixtures, P, Q and R.
The results are shown.

Which mixtures contain dye X?
(A) P, Q and R

(B) P and Q only

(D) R only

▶️Answer/Explanation

Ans: C

Question 15:

Topic – C2.2 (Atomic structure and the Periodic Table)

What do the chemical symbols N2 and Ni represent?

▶️Answer/Explanation

Ans: D

Question 16:

Topic – C2.2 (Atomic structure and the Periodic Table)

The nucleon number of a hydrogen atom is 1.
What is present inside the nucleus of this atom?
(A) one proton and one electron
(B) one proton and one neutron
(C) one proton only
(D) one neutron only

▶️Answer/Explanation

Ans: C

Question 17:

Topic – C3.3 (The mole and the Avogadro constant)

When magnesium carbonate reacts with dilute hydrochloric acid, carbon dioxide gas is released.
The equation for this reaction is shown.

MgCO$_{3}$ + 2HCl → MgCl$_{2}$ + CO$_{2}$ + H$_{2}$O

Which volume of carbon dioxide, collected at room temperature and pressure, is released when 4.2 g of magnesium carbonate reacts with excess dilute hydrochloric acid?
(A) 1.2 dm$^{3}$

(B) 2.4 dm$^{3}$

(D) 12 dm$^{3}$

▶️Answer/Explanation

Ans: A

Question 18:

Topic – C5.1 (Exothermic and endothermic reactions)

The temperature of solution Q is 21 ºC. The temperature of solution P is 24 ºC.
The two solutions are mixed. The temperature of the mixture is 31 ºC.
Which statement is correct?
(A) An endothermic reaction occurs and the reacting chemicals gain energy.
(B) An endothermic reaction occurs and the reacting chemicals lose energy.
(C) An exothermic reaction occurs and the reacting chemicals gain energy.
(D) An exothermic reaction occurs and the reacting chemicals lose energy.

▶️Answer/Explanation

Ans: D

Question 19:

Topic – C6.2 (Rate of reaction)

The rate of reaction between calcium carbonate and dilute hydrochloric acid is determined either
by measuring the change in gas volume per unit time or by measuring the change in mass per unit time.
Which piece of apparatus must be used for both methods?
(A) a balance
(B) a gas syringe
(C) a stop-clock
(D) a thermometer

▶️Answer/Explanation

Ans: C

Question 20:

Topic – C6.3 (Redox)

The ionic equation for the reaction between iron(II) chloride and chlorine is shown.

2Fe$^{2+}$ + Cl$_{2}$ → 2Fe$^{3+}$ + 2C$^{l-}$

Which row shows the substance that is reduced and the oxidising agent?

▶️Answer/Explanation

Ans: A

Question 21:

Topic – C12.5 (Identification of ions and gases)

Substance X is mixed with aqueous sodium hydroxide.
A green precipitate is produced.
Which metal ion is present in X?
(A) Cu $^{2+}$

(B) Fe $^{2+}$

(D) Zn $^{2+}$

▶️Answer/Explanation

Ans: B

Question 22:

Topic – C8.2 (Group I properties)

Potassium is in Group I of the Periodic Table.
Which statement about potassium is correct?
(A) It is a relatively hard metal.
(B) It is less dense than lithium.
(C) It has a higher melting point than sodium.
(D) It reacts more vigorously with water than sodium.

▶️Answer/Explanation

Ans: D

Question 23:

Topic – C8.5 (Noble gases)

What is a use for argon?
(A) as a catalyst
(B) in alloys
(C) in lamps
(D) neutralising chemical waste

▶️Answer/Explanation

Ans: C

Question 24:

Topic – C9.4 (Reactivity series)

Silver oxide is reduced by heating with carbon more easily than copper oxide is reduced by heating with carbon.
A copper strip is placed into a solution of silver nitrate as shown.

Which row describes the reaction?

▶️Answer/Explanation

Ans: B

Question 25:

Topic – C10.2 (Air quality and climate)

Catalytic converters are fitted to cars to remove some gases from exhaust emissions.
Which gases are released by catalytic converters?
(A) carbon dioxide and nitrogen
(B) carbon dioxide and nitrogen monoxide
(C) carbon monoxide and nitrogen
(D) carbon monoxide and nitrogen monoxide

▶️Answer/Explanation

Ans: A

Question 26:

Topic – C10.2 (Air quality and climate)

Sulfuric acid is manufactured by the Contact process.
One of the reactions in this process converts sulfur dioxide to sulfur trioxide.
Which statements about the conditions for this reaction are correct?
1 A nickel catalyst is used.
2 A pressure of about 1–2 atmospheres is used.
3 A temperature of about 450 ºC is used.
(A) 1, 2 and 3

(B) 1 and 2 only

(D) 2 and 3 only

▶️Answer/Explanation

Ans: D

Question 27:

Topic – C11.7 (Polymers)

Which statements about monomers and polymers are correct?

1 Different polymers can have different linkages between monomers.
2 An addition polymerisation reaction produces more than one type of polymer.
3 Addition polymers are made from saturated monomer molecules.
4 Nylon is a condensation polymer formed from two different monomers.
(A) 1 and 2

(B) 1 and 4

(D) 3 and 4

▶️Answer/Explanation

Ans: B

Question 28:

Topic – P1.2 (Motion)

The speed–time graph represents part of a car journey.

How far does the car travel in the part of the journey shown?
(A) 20m

(B) 45m

(D) 90m

▶️Answer/Explanation

Ans: C

Question 29:

Topic – P1.5 (Forces)

A rocket has a mass of 300 kg. Its motors produce a force of 12 000N vertically upwards.
The acceleration of free fall g is 10m/s$^{2}$ .

What is the resultant force on the rocket and what is the acceleration of the rocket?

▶️Answer/Explanation

Ans: A

Question 30:

Topic – P1.5.2 (Turning effect of forces)

A uniform metre rule rests on a pivot at the 50 cm mark. A load L is placed at the 30 cm mark and
a load of 6.0N is placed at the 80 cm mark. The arrangement is balanced.

What is the weight of load L?
(A) 6.0 N

(B) 9.0 N

(D) 24 N

▶️Answer/Explanation

Ans: B

Question 31:

Topic – P1.6.1 (Energy)

A hydroelectric energy storage scheme stores energy by pumping water up a mountain into a lake behind a dam.
In 1.0 s, 10 000 kg of water is pumped into the lake and gains a height of 150 m. The efficiency of this process is 60%.
Gravitational field strength = 10N/ kg.
What is the energy input in 1.0 s?
(A) 9.0 × 10$^{5}$J

(B) 2.5 × 10$^{6}$J

(D) 2.5 × 10$^{7}$J

▶️Answer/Explanation

Ans: D

Question 32:

Topic – P2.2 (Thermal properties and temperature)

What is a thermocouple used to measure?
(A) expansion
(B) pressure
(C) resistance
(D) temperature

▶️Answer/Explanation

Ans: D

Question 33:

Topic – P2.3 (Transfer of thermal energy)

A vacuum flask uses a vacuum between two shiny surfaces to keep a drink hot for a long time.

How do the vacuum and the shiny surfaces help to keep the drink hot?

▶️Answer/Explanation

Ans: B

Question 34:

Topic – P3.2.2 (Refraction of light)

When light passes from air into glass its speed decreases but its frequency remains constant.
Light travelling in air enters a glass block at an angle of incidence that is greater than 0º.
Which row describes what happens to the direction and what happens to the wavelength of the light?

▶️Answer/Explanation

Ans: C

Question 35:

Topic – P3.4 (Sound)

Which change to a sound wave makes the sound louder?
(A) decreasing the amplitude
(B) decreasing the wavelength
(C) increasing the amplitude
(D) increasing the wavelength

▶️Answer/Explanation

Ans: C

Question 36:

Topic – P4.2.1 (Electrical charge)

Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively charged.
Ball Q is brought close to ball P. The balls move away from each other.

Ball Q is now brought close to ball R. The balls move closer to each other.

What are the signs of the charges on ball Q and ball R?

▶️Answer/Explanation

Ans: B

Question 37:

Topic – P4.2.4 (Resistance)

Which graph shows the current–voltage characteristics of an ohmic resistor and a filament lamp?

▶️Answer/Explanation

Ans: A

Question 38:

Topic – P4.3.2 (Series and parallel circuits)

A battery is connected in a circuit to a 3.0Ω resistor, a 6.0Ω resistor and two ammeters P and Q.

What is the combined resistance of the two resistors and which ammeter has the greater reading?

▶️Answer/Explanation

Ans: B

Question 39:

Topic – P4.4 (Electrical safety)

The current in an electric kettle used to boil water is 9.0A.
What is the most appropriate rating of fuse to use with this kettle?
(A) 1A

(B) 3A

(D) 13A

▶️Answer/Explanation

Ans: D

Question 40:

Topic – P5.2.2 (The three types of nuclear emission)

Three types of ionising radiation enter a magnetic field at right angles to the field.
Which types of radiation are deflected?
(A) $\alpha$ and β only

(B) $\alpha$ and $\gamma$ only

(D) $\alpha$, β and $\gamma$

▶️Answer/Explanation

Ans: A

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