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Question 1:-

What do both animals and plants need to meet their nutritional requirements?
(A) carbon dioxide
(B) ions
(C) light
(D) organic compounds

▶️Answer/Explanation

Ans: B

Question 2:-

Oxygen produced in palisade mesophyll cells by photosynthesis diffuses into the air spaces in the leaf.
What causes this movement?
(A) osmosis between the leaf cells
(B) evaporation of water from mesophyll cells
(C) difference in oxygen concentration inside and outside the cells
(D) wind blowing over the leaves

▶️Answer/Explanation

Ans: C

Question 3:-

A student tests a sample of food to identify its composition.
The results are shown.

 

Which substances are shown to be present in the food sample?
(A) protein, reducing sugar and starch
(B) protein and starch only
(C) reducing sugar and starch only
(D) reducing sugar and protein only

▶️Answer/Explanation

Ans: C

Question 4:-

The diagram shows a functional human enzyme at 37 °C.

                                                                 

Which row shows the likely shape of this enzyme at 5 °C and 80 °C?

 

▶️Answer/Explanation

Ans: A

Question 5:-

What is the manufacture of carbohydrates from raw materials using light energy called?
(A) growth
(B) photosynthesis
(C) respiration
(D) reproduction

▶️Answer/Explanation

Ans: B

Question 6:-

Which row about secretions in the alimentary canal is correct?

 

▶️Answer/Explanation

Ans: D

Question 7:-

Which vessels carry blood towards the heart?

 

▶️Answer/Explanation

Ans: D

Question 8:-

Which process releases the most energy?
(A) carbon dioxide + water → glucose + oxygen
(B) glucose + oxygen → carbon dioxide + water
(C) glucose → alcohol + carbon dioxide
(D) glucose → lactic acid

▶️Answer/Explanation

Ans: B

Question 9:-

The arterioles that supply blood to the skin’s surface capillaries undergo vasodilation.
Which row describes the effect of this on the core body temperature and the volume of blood passing through these capillaries?

 

▶️Answer/Explanation

Ans: C

Question 10:-

Which statements about human egg and sperm cells are correct?

        1. The egg cell’s membrane changes to prevent other sperm from entering it after fertilisation.
        2. The egg and sperm cells have a diploid nucleus.
        3. The sperm’s enzymes allow it to penetrate the egg to fertilise it.
        4. The process of fertilisation occurs in the ovary.
(A) 1 and 3                  (B) 1 and 4                 (C) 2 and 3                       (D) 2 and 4

▶️Answer/Explanation

Ans: A

Question 11:-

  Which row shows the sex chromosomes in humans?

 

▶️Answer/Explanation

Ans: A

Question 12:-

The diagram shows part of a food web in a rainforest.

           

Which animals are feeding as quaternary consumers?
(A) crocodile and green anaconda
(B) crocodile and jaguar
(C) green anaconda and tanager
(D) jaguar and tanager

▶️Answer/Explanation

Ans: C

Question 13:-

The diagram shows part of the carbon cycle.
Which process, due to human activities, has increased the concentration of carbon dioxide in the atmosphere?

             

▶️Answer/Explanation

Ans: D

Question 14:-

Which process is used to obtain water from a salt solution?
(A) chromatography
(B) crystallisation
(C) distillation
(D) filtration

▶️Answer/Explanation

Ans: C

Question 15:-

One isotope of oxygen is represented by  \( _{8}^{16}\textrm{O}\) .

Which diagram represents a different isotope of oxygen?

           

▶️Answer/Explanation

Ans: D

Question 16:-

Which row shows the ionic half-equation for the reaction at the cathode during the electrolysis of the named electrolyte?

 

▶️Answer/Explanation

Ans: A

Question 17:- 

When dilute hydrochloric acid reacts with calcium carbonate, carbon dioxide is produced.
Which pieces of apparatus are used to investigate the effect of temperature on the rate of this reaction?


 

(A) 1, 2 and 3               (B) 1 and 2 only                 (C) 1 and 3 only                          (D)  2 and 3 only

▶️Answer/Explanation

Ans: A

Question 18:-

Solid zinc reacts with aqueous copper(II) sulfate. The ionic equation for the reaction is shown.

                        Zn + Cu2+ → Zn2+ + Cu

Which row identifies the substance being oxidised and the reducing agent?

     

▶️Answer/Explanation

Ans: D

Question 19:-

Chromium(III) oxide reacts with dilute hydrochloric acid and with aqueous sodium hydroxide.
Which word describes chromium(III) oxide?
(A) acidic
(B) amphoteric
(C) basic
(D) neutral

▶️Answer/Explanation

Ans: B

Question 20:-

Gas X turns limewater milky.
What is X?
(A) carbon dioxide
(B) chlorine
(C) hydrogen
(D) oxygen

▶️Answer/Explanation

Ans: A

Question 21:-

Which statements about the elements in Group VII of the Periodic Table are correct?

           1. Bromine is lighter in colour than chlorine.
           2. Chlorine is more reactive than bromine.
           3. Chlorine displaces iodide ions from aqueous solution.
           4. Iodine displaces bromide ions from aqueous solution.
(A) 1 and 2             (B) 1 and 4                (C) 2 and 3                   (D) 3 and 4

▶️Answer/Explanation

Ans: C

Question 22:-

Neon is in Group Vlll of the Periodic Table.
Which row about neon is correct?

 

▶️Answer/Explanation

Ans: C

Question 23:-

Which row identifies an ore of aluminium and the method of extraction of aluminium from its ore?

▶️Answer/Explanation

Ans: A

Question 24:-

Copper(II) sulfate and cobalt(II) chloride are used to test for water.
Which rows show the colour changes for these two substances?

 

(A) 1 and 2               (B) 1 and 4                (C) 2 and 3                (D) 3 and 4

▶️Answer/Explanation

Ans: B

Question 25:-

Sulfuric acid is manufactured by the Contact process.
Which reaction in this process uses a catalyst?
(A) S + O2  → SO2
(B) 2SO2 + O2 → 2SO3
(C) SO3 + H2SO4  → H2S2O7
(D) H2S2O7 + H2O → 2H2SO4

▶️Answer/Explanation

Ans: B

Question 26:-

What is the main constituent of clean air and of natural gas?

 

▶️Answer/Explanation

Ans: B

Question 27:-

The structure of a monomer is shown.

                                         

Which structure represents a section of the addition polymer that is formed from this monomer?

▶️Answer/Explanation

Ans: D

Question 28:-

The speed–time graph represents the motion of a vehicle during the first 10 s of a journey.

           

How far does the vehicle travel during the 10 s?
(A) 25 m            (B) 50 m                  (C) 75 m                   (D) 100 m

▶️Answer/Explanation

Ans: C

Question 29:-

The diagram shows a spring without a load and then with a load of mass 500 g suspended from the same spring. The spring obeys Hooke’s law.

           

The length of the unloaded spring is 30 cm.
When the 500 g load is suspended from the spring, the spring extends to a new length of 35 cm.
The gravitational field strength g is 10 N/ kg.
Which calculation gives the spring constant of the spring?

(A) \(\frac{0.5 \times 10}{35 – 30} N/cm\)
(B) \(\frac{0.5 }{10 \times (35-30)} N/cm\)
(C) \(\frac{10 \times (35-30)}{0.5} N/cm\)
(D)  \(0.5 \times 10 \times (35-30) N/cm\)

▶️Answer/Explanation

Ans: A

Question 30:-

A weightless L-shaped beam is pivoted as shown.
A load of mass 2.4 kg is suspended from the beam at point X. The beam is held in equilibrium by a horizontal force F acting at the point shown.

       

The gravitational field strength g is 10 N/ kg.
What is F?
(A) 4.8 N              (B) 48N               (C) 72N                  (D) 720N

▶️Answer/Explanation

Ans: B

Question 31:-

Four different kettles contain different masses of water.
They are used to heat the water from room temperature to boiling point.
The kettles take different times to do this.
Which kettle has the lowest useful power output?

 

▶️Answer/Explanation

Ans: B

Question 32:-

A gas in a balloon is heated at constant pressure.
What happens to the gas?
(A) Its density decreases.
(B) Its mass decreases.
(C) Its temperature decreases.
(D) Its volume decreases.

▶️Answer/Explanation

Ans: A

Question 33:-

Which diagram shows a ray of light undergoing total internal reflection?

▶️Answer/Explanation

Ans: A

Question 34:-

Which two types of wave cannot travel at the same speed as each other in a vacuum?
(A) infrared and gamma
(B) ultraviolet and X-rays
(C) light and microwaves
(D) radio waves and sound

▶️Answer/Explanation

Ans: D

Question 35:-

The electromotive force (e.m.f.) of a battery is 2.0V.
Which statement is correct?
(A) The battery supplies 0.50 J of energy for every 1.0 C of charge driven around a circuit.
(B) The battery supplies 0.50 J of energy for every 2.0 C of charge driven around a circuit.
(C) The battery supplies 2.0 J of energy for every 1.0 C of charge driven around a circuit.
(D) The battery supplies 2.0 J of energy for every 2.0 C of charge driven around a circuit.

▶️Answer/Explanation

Ans: C

Question 36:-

The potential difference (p.d.) across a 60 Ω resistor is 12V.
How much time does it take for a charge of 100 C to pass through the resistor?
(A) 0.0020 s               (B) 0.050 s                  (C) 20 s                        (D) 500 s

▶️Answer/Explanation

Ans: D

Question 37:-

A heater circuit is protected by a 10A fuse.
How does the fuse protect the circuit?
(A) It cuts off the current when the current in the heater is greater than 10A.
(B) It decreases the current in the heater to 10A when the current is more than 10A.
(C) It increases the current in the heater to 10A when the current is less than 10A.
(D) It maintains a constant temperature in the heater.

▶️Answer/Explanation

Ans: A

Question 38:-

The diagram shows a wire carrying an electric current in the direction shown (towards the bottom of the page). The wire is at right angles to a magnetic field that is directed into the page.
A force acts on the wire because of the current and the magnetic field.
In which labelled direction does this force act?

     

▶️Answer/Explanation

Ans: B

Question 39:-

Which voltage–time graph shows the output voltage of a simple a.c. generator?

   

▶️Answer/Explanation

Ans: B

Question 40:-

A beam of different types of ionising radiation passes through an electric field between two metal plates. The diagram shows the direction of each type of radiation as it passes through the field.

              

What does the beam contain?
(A) alpha (α)-particles, beta (β)-particles and gamma (γ)-rays
(B) alpha (α)-particles and beta (β)-particles only
(C) alpha (α)-particles and gamma (γ)-rays only
(D) beta (β)-particles and gamma (γ)-rays only

▶️Answer/Explanation

Ans: C

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