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Question 1:

Topic-  B6.1 (Photosynthesis)

What do plants need for their nutrition?
(A)  carbon dioxide, ions, organic compounds and light
(B)  carbon dioxide, ions, organic compounds and water
(C)  carbon dioxide, ions, light and water
(D)  carbon dioxide, organic compounds, light and water

▶️Answer/Explanation

Ans: C

Question 2:

Topic- B3.2 (Osmosis)

Red onion cells are placed in distilled water.
Which statement is correct?
(A)  The cells plasmolyse; water moves into the cells from a high to a low water potential.
(B)  The cells plasmolyse; water moves out of the cells from a low to a high water potential.
(C)  The cells become turgid; water moves into the cells from a high to a low water potential.
(D)  The cells become turgid; water moves out of the cells from a low to a high water potential.

▶️Answer/Explanation

Ans: C

Question 3:

Topic –  B4.1 (Biological molecules)

Glycerol is a component of which large molecules?
(A)  fats
(B)  glycogen
(C)  proteins
(D)  starch

▶️Answer/Explanation

Ans: A

Question 4:

Topic – B5.1 (Enzymes)

The graph shows the rate of reaction of salivary amylase at different temperatures.

What does the graph show at point X?
(A)  The enzyme has stopped working.
(B)  The reaction is nearly completed.
(C)  The reaction rate is controlled by pH.
(D)  The temperature is higher than the optimum.

▶️Answer/Explanation

Ans: D

Question 5:

Topic- B6.1 (Photosynthesis)

Which cell does not require magnesium ions for the synthesis of chlorophyll?

▶️Answer/Explanation

Ans: A

Question 6:

Topic – B7.2 (Digestive system)

Dogs are mammals and have the same types of teeth as humans.
Which tooth is a canine?

▶️Answer/Explanation

Ans: D

Question 7:

Topic – B8.1 (Xylem and phloem) and B8.3 (Transpiration)

Which row correctly describes translocation and transpiration in plants?

▶️Answer/Explanation

Ans: C

Question 8:

 Topic –  B12.1 (Respiration)

Which diagram gives the possible products of aerobic respiration and anaerobic respiration?

▶️Answer/Explanation

Ans: D

Question 9:

Topic – B13.1 (Coordination and response)

When a seed germinates in the soil, the root grows downwards.
Which type of response is the root exhibiting?
(A)  negative gravitropism
(B)  negative phototropism
(C)  positive gravitropism
(D) positive phototropism

▶️Answer/Explanation

Ans: C

Question 10:

Topic – B15.4 (Sexual reproduction in humans)

What is a function of the placenta?
(A)  It acts as a barrier to toxins.
(B)  It cushions the fetus from bumps.
(C)  It maintains a constant temperature.
(D) It exchanges blood between the fetus and the mother.

▶️Answer/Explanation

Ans: A

Question 11:

Topic – B16.2 (Cell division)

The diagram shows the chromosomes present in a cell.

The cell divides by meiosis.
What correctly describes the cells that are produced?
(A)  genetically identical, 8 chromosomes, diploid
(B)  genetically different, 4 chromosomes, haploid
(C)  genetically identical, 4 chromosomes, diploid
(D)  genetically different, 8 chromosomes, haploid

▶️Answer/Explanation

Ans: B

Question 12:

Topic – B18.2 (Food chains and food webs)

Which type of organism gets its energy from the remains of dead organisms or other organic waste?
(A)  a carnivore
(B)  a decomposer
(C)  a herbivore
(D)  a producer

▶️Answer/Explanation

Ans: B

Question 13:

Topic – B19.1 (Habitat destruction)

What is an undesirable effect of deforestation?
(A)  It increases the oxygen concentration of the atmosphere.
(B)  It leads to erosion and loss of soil.
(C)  It makes land available for agriculture.
(D)  It pollutes the air with methane.

▶️Answer/Explanation

Ans: B

Question 14:

Topic – C1.1 (Solids, liquids, and gases)

Which properties are used to distinguish between solids and gases?

1  compressibility
2  melting point
3  flammability

(A)  1 and 2 only

(B)  1 and 3 only

(C)  2 and 3 only

(D)  1, 2 and 3

▶️Answer/Explanation

Ans: A

Question 15:

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

An atom of fluorine is represented by $_{9}^{19}\textrm{F}$.
How many electrons does this atom contain?
(A)  9

(B)  10

(C)  19

(D)  28

▶️Answer/Explanation

Ans: A

Question 16:

Topic – C2.4 (Ions and ionic bonds)

Which statement describes the lattice structure of sodium chloride, NaCl ?
(A)  It is a random arrangement of equal numbers of sodium atoms and chlorine atoms.
(B)  It is a random arrangement of equal numbers of sodium ions and chloride ions.
(C)  It is a regular arrangement of alternating sodium atoms and chlorine atoms.
(D)  It is a regular arrangement of alternating sodium ions and chloride ions.

▶️Answer/Explanation

Ans: D

Question 17:

Topic – C3.2 (Relative masses of atoms and molecules)

1 g of hydrogen contains 6 × 10$^{23}$ atoms.
The relative atomic mass of helium is 4.
How many atoms does 1 g of helium contain?
(A)  1.5 × 10$^{23}$

(B)  3 × 10$^{23}$

(C)  6× 10$^{23}$

(D)  2.4 × 10$^{24}$

▶️Answer/Explanation

Ans: A

Question 18:

Topic – C4.1 (Electrolysis)

Copper(II) sulfate can be electrolysed using either carbon electrodes or copper electrodes.
What happens to the concentration of copper(II) ions in the electrolyte during electrolysis using these electrodes?

▶️Answer/Explanation

Ans: B

Question 19:

Topic – C5.1 (Exothermic and endothermic reactions)

Which statement about energy changes in chemical reactions is correct?
(A)  Activation energy is the maximum energy required by the reactants for a reaction to occur.
(B)  Bond forming is an endothermic process.
(C)  In an exothermic reaction, the energy level of the reactants is higher than the energy level of  the products.
(D)  Increasing temperature increases the minimum energy required by the reactants for a reaction to occur.

▶️Answer/Explanation

Ans:  C

Question 20:

Topic – C6.3 (Redox)

The equation for the reaction of iron(III) oxide and aluminium is shown.
2Al + Fe$_{2}$O$_{3}$  →  Al$_{2}$O$_{3}$ + 2Fe

Which statements about this reaction are correct?
1   Iron(III) ions are reduced.
2  O atoms gain electrons.
3   Fe$_{2}$O$_{3}$ is a reducing agent.
4   Al atoms lose electrons.
(A)  1 and 2

(B)  1 and 4

(C)  2 and 3

(D)  3 and 4

▶️Answer/Explanation

Ans: B

Question 21:

Topic – C8.3 (Group VII properties)

Which statement about the halogens is not correct?
(A)  Iodine has a darker colour than chlorine.
(B)  They all exist as diatomic molecules.
(C)  They are all gases at room temperature.
(D)  They are all non-metals.

▶️Answer/Explanation

Ans: C

Question 22:

Topic – C8.5 (Noble gases)

Filament lamps require an inert atmosphere.
Which gas is used to fill these lamps?
(A)  argon
(B)  helium
(C)  hydrogen
(D)  oxygen

▶️Answer/Explanation

Ans: A

Question 23:

Topic – C9.3 (Alloys and their properties)

Alloys are formed by dissolving one metal in another.

Alloys are ……1…… .
……2…… alloys conduct electricity.

Which words complete gaps 1 and 2?

▶️Answer/Explanation

Ans: C

Question 24:

Topic –  C9.4 (Reactivity series)

Which statement about reactions of metals is correct?
(A)  When copper is added to aqueous aluminium nitrate, the colourless solution turns blue.
(B)  When magnesium oxide is heated with iron, solid iron(III) oxide is formed.
(C)  When potassium oxide is heated with copper, an orange-brown solid is formed.
(D) When zinc is added to aqueous copper sulfate, the blue solution turns colourless.

▶️Answer/Explanation

Ans: D

Question 25:

Topic – C10.2 (Air quality and climate)

Which row describes conditions for the conversion of sulfur dioxide to sulfur trioxide in the Contact process?

▶️Answer/Explanation

Ans: D

Question 26:

Topic – C10.1 (Water)

What is not a use of limestone?
(A)  manufacture of calcium oxide
(B)  neutralising industrial waste products
(C)  purifying water
(D)  treating acidic soil

▶️Answer/Explanation

Ans: C

Question 27:

Topic – C11.7 (Polymers)

The structure of the monomer chloroethene is shown.

What is the structure of the polymer formed from this monomer?

▶️Answer/Explanation

Ans: B

Question 28:

Topic – P1.2 (Motion)

A motorcycle accelerates uniformly from a velocity of 20 m/s to a velocity of 35 m/s in 5.0 s.
What is its acceleration?
(A)  3.0 m/s$^{2}$

(B)  5.5 m/s$^{2}$

(C)  7.0 m/s$^{2}$

(D)  11 m/s$^{2}$

▶️Answer/Explanation

Ans: A

Question 29:

Topic – P1.4 (Density)

Which two pieces of apparatus are used to find the density of a small, irregularly shaped piece of metal?
(A)  balance and measuring cylinder
(B)  balance and metre rule
(C)  beaker and measuring cylinder
(D)  beaker and metre rule

▶️Answer/Explanation

Ans: A

Question 30:

Topic – P1.5 (Forces)

An object of mass 2.0 kg is acted upon by a force of 3.0 N and a force of 7.0 N.
The directions of the forces are shown.

What is the acceleration of the object?
(A)  0.20 m/s$^{2}$

(B)  0.50 m/s$^{2}$

(C)  2.0 m/s$^{2}$

(D)  5.0 m/s$^{2}$

▶️Answer/Explanation

Ans: C

Question 31:

Topic – P4.2 (Electrical quantities)

Which electrical device transfers chemical energy into electrical energy?
(A)  battery
(B)  lamp
(C)  electric motor
(D) television

▶️Answer/Explanation

Ans: A

Question 32:

Topic – P1.6 (Energy, work, and power)

From which type of energy is electrical energy transferred in a hydroelectric power station?
(A)  chemical potential energy
(B)  elastic potential (strain) energy
(C)  gravitational potential energy
(D)  nuclear energy

▶️Answer/Explanation

Ans: C

Question 33:

Topic – P2.1 (Kinetic particle model of matter)

Equal volumes of a gas, a liquid and a solid are heated through the same temperature difference at constant pressure.
Which statement about their expansions is correct?
(A)  The gas expands the most.
(B)  The liquid expands the most.
(C)  The solid expands the most.
(D)  The gas, the liquid and the solid all expand by the same amount.

▶️Answer/Explanation

Ans: A

Question 34:

Topic – P3.2 (Light)

The critical angle for diamond in air is 25. Light travels faster in air than in diamond.
Which diagram shows the path of light passing from diamond into air?

▶️Answer/Explanation

Ans: D

Question 35:

Topic – P4.5 (Electromagnetic effects)

Which type of magnet can be switched on and off many times per second?
(A)  an electromagnet only
(B)  a permanent magnet only
(C)  both electromagnets and permanent magnets
(D)  neither electromagnets or permanent magnets

▶️Answer/Explanation

Ans: A

Question 36:

Topic – P4.2 (Electrical quantities)

A resistance wire of cross-sectional area A and length l has resistance R.

Wires X, Y and Z are made of the same material as the first wire but have different dimensions as shown.

Which of the wires X, Y and Z has resistance R?
(A)  wire X
(B)  wire Y
(C)  wire Z
(D)  none of them

▶️Answer/Explanation

Ans: B

Question 37:

Topic – P4.2 (Electrical quantities)

A battery of electromotive force (e.m.f.) 10V is connected to two lamps X and Y.

The current in lamp Y is 2.0A.
The power of lamp Y is half the power of lamp X.
How much energy is transferred by the battery in 1.0 minute?
(A)  30 J

(B)  1800 J

(C)  2400 J

(D)  3600 J

▶️Answer/Explanation

Ans: D

Question 38:

Topic –  P4.4 (Electrical safety)

The current in an electric heater during normal use is 11A.
What is an appropriate rating for a fuse to protect the heater?
(A)  3A

(B)  10A

(C)  13A

(D)  36A

▶️Answer/Explanation

Ans: C

Question 39:

Topic –  P4.5 (Electromagnetic effects)

A current-carrying wire is placed between the poles of a magnet, as shown.
The current direction in the wire is shown.
A force is produced on the wire.
In which labelled direction does the force act?

▶️Answer/Explanation

Ans: B

Question 40:

Topic –  P5.1 (The nucleus)

The diagrams represent pairs of nuclei of some atoms.
Which pair shows nuclei of different isotopes of the same element?

▶️Answer/Explanation

Ans: B

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